./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label48.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label48.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 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:14:46,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:14:46,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:14:46,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:14:46,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:14:46,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:14:46,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:14:46,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:14:46,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:14:46,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:14:46,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:14:46,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:14:46,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:14:46,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:14:46,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:14:46,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:14:46,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:14:46,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:14:46,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:14:46,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:14:46,934 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:14:46,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:14:46,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:14:46,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:14:46,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:14:46,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:14:46,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:14:46,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:14:46,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:14:46,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:14:46,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:14:46,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:14:46,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:14:46,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:14:46,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:14:46,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:14:46,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:14:46,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:14:46,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:14:46,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:14:46,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:14:46,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:14:46,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:14:46,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:14:46,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:14:46,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:14:46,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:14:46,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:14:46,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:14:46,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:14:46,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:14:46,990 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:14:46,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:14:46,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:14:46,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:14:46,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:14:46,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:14:46,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:14:46,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:14:46,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:14:46,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:14:46,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:14:46,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:14:46,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:14:46,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:14:46,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:14:46,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:14:46,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:14:46,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:14:46,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:14:46,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:14:46,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6abe6deda42e5cd6457f2c2e337625778fbe4d0886f20421ed4af9df8a9f44a2 [2022-07-19 12:14:47,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:14:47,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:14:47,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:14:47,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:14:47,275 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:14:47,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2022-07-19 12:14:47,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469be95d4/8f13ea04149d4589bcf8d3ba636159c4/FLAG70d72018b [2022-07-19 12:14:47,957 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:14:47,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label48.c [2022-07-19 12:14:47,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469be95d4/8f13ea04149d4589bcf8d3ba636159c4/FLAG70d72018b [2022-07-19 12:14:48,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/469be95d4/8f13ea04149d4589bcf8d3ba636159c4 [2022-07-19 12:14:48,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:14:48,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:14:48,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:14:48,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:14:48,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:14:48,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:14:48" (1/1) ... [2022-07-19 12:14:48,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1de9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:48, skipping insertion in model container [2022-07-19 12:14:48,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:14:48" (1/1) ... [2022-07-19 12:14:48,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:14:48,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:14:48,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2022-07-19 12:14:49,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:14:49,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:14:49,302 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label48.c[1668,1681] [2022-07-19 12:14:49,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:14:49,737 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:14:49,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49 WrapperNode [2022-07-19 12:14:49,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:14:49,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:14:49,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:14:49,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:14:49,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:49,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,147 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-19 12:14:50,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:14:50,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:14:50,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:14:50,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:14:50,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:14:50,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:14:50,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:14:50,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:14:50,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (1/1) ... [2022-07-19 12:14:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:14:50,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:14:50,689 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) [2022-07-19 12:14:50,764 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 [2022-07-19 12:14:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:14:50,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:14:50,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:14:50,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:14:50,925 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:14:50,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:14:54,551 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:14:54,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:14:54,575 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:14:54,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:14:54 BoogieIcfgContainer [2022-07-19 12:14:54,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:14:54,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:14:54,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:14:54,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:14:54,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:14:48" (1/3) ... [2022-07-19 12:14:54,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c80915a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:14:54, skipping insertion in model container [2022-07-19 12:14:54,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:14:49" (2/3) ... [2022-07-19 12:14:54,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c80915a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:14:54, skipping insertion in model container [2022-07-19 12:14:54,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:14:54" (3/3) ... [2022-07-19 12:14:54,589 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2022-07-19 12:14:54,602 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:14:54,603 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:14:54,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:14:54,697 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24679143, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c5a1ac8 [2022-07-19 12:14:54,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:14:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:14:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-19 12:14:54,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:14:54,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:14:54,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:14:54,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:14:54,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-07-19 12:14:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:14:54,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883182333] [2022-07-19 12:14:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:14:54,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:14:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:14:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:14:54,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:14:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883182333] [2022-07-19 12:14:54,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883182333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:14:54,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:14:54,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:14:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919799943] [2022-07-19 12:14:54,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:14:54,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:14:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:14:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:14:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:14:54,965 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:14:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:14:58,426 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-19 12:14:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:14:58,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-07-19 12:14:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:14:58,453 INFO L225 Difference]: With dead ends: 2388 [2022-07-19 12:14:58,458 INFO L226 Difference]: Without dead ends: 1506 [2022-07-19 12:14:58,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:14:58,472 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 824 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:14:58,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 12:14:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-19 12:14:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-19 12:14:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:14:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-07-19 12:14:58,591 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 10 [2022-07-19 12:14:58,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:14:58,592 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-07-19 12:14:58,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:14:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-07-19 12:14:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 12:14:58,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:14:58,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:14:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:14:58,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:14:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:14:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1004872137, now seen corresponding path program 1 times [2022-07-19 12:14:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:14:58,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317141228] [2022-07-19 12:14:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:14:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:14:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:14:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:14:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:14:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317141228] [2022-07-19 12:14:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317141228] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:14:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165330172] [2022-07-19 12:14:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:14:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:14:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:14:58,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:14:58,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:14:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:14:58,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:14:58,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:14:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:14:58,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:14:58,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165330172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:14:58,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:14:58,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-19 12:14:58,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706013308] [2022-07-19 12:14:58,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:14:58,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:14:58,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:14:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:14:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 12:14:58,950 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:02,304 INFO L93 Difference]: Finished difference Result 4512 states and 7393 transitions. [2022-07-19 12:15:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-19 12:15:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:02,317 INFO L225 Difference]: With dead ends: 4512 [2022-07-19 12:15:02,318 INFO L226 Difference]: Without dead ends: 3008 [2022-07-19 12:15:02,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 12:15:02,324 INFO L413 NwaCegarLoop]: 1383 mSDtfsCounter, 769 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 2867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:02,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1391 Invalid, 2867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 12:15:02,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-07-19 12:15:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-07-19 12:15:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.3634852011972065) internal successors, (4100), 3007 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4100 transitions. [2022-07-19 12:15:02,403 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4100 transitions. Word has length 81 [2022-07-19 12:15:02,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:02,404 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4100 transitions. [2022-07-19 12:15:02,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4100 transitions. [2022-07-19 12:15:02,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 12:15:02,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:02,415 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:02,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 12:15:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:15:02,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:02,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:02,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2017229475, now seen corresponding path program 1 times [2022-07-19 12:15:02,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:02,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089400449] [2022-07-19 12:15:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:15:02,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089400449] [2022-07-19 12:15:02,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089400449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:02,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:02,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:15:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568042993] [2022-07-19 12:15:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:02,789 INFO L87 Difference]: Start difference. First operand 3008 states and 4100 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:05,749 INFO L93 Difference]: Finished difference Result 7516 states and 10661 transitions. [2022-07-19 12:15:05,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:05,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-07-19 12:15:05,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:05,769 INFO L225 Difference]: With dead ends: 7516 [2022-07-19 12:15:05,770 INFO L226 Difference]: Without dead ends: 4510 [2022-07-19 12:15:05,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:05,780 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 748 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2016 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 2016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:05,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 520 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 2016 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 12:15:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4510 states. [2022-07-19 12:15:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4510 to 4510. [2022-07-19 12:15:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4509 states have (on average 1.3251275227323132) internal successors, (5975), 4509 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 5975 transitions. [2022-07-19 12:15:05,929 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 5975 transitions. Word has length 84 [2022-07-19 12:15:05,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:05,931 INFO L495 AbstractCegarLoop]: Abstraction has 4510 states and 5975 transitions. [2022-07-19 12:15:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 5975 transitions. [2022-07-19 12:15:05,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 12:15:05,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:05,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:15:05,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:05,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1374981862, now seen corresponding path program 1 times [2022-07-19 12:15:05,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:05,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480209171] [2022-07-19 12:15:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:05,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:15:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:06,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480209171] [2022-07-19 12:15:06,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480209171] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:06,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:06,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297671279] [2022-07-19 12:15:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:06,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:15:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:15:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:15:06,073 INFO L87 Difference]: Start difference. First operand 4510 states and 5975 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:10,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:10,180 INFO L93 Difference]: Finished difference Result 14275 states and 18791 transitions. [2022-07-19 12:15:10,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:15:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-19 12:15:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:10,224 INFO L225 Difference]: With dead ends: 14275 [2022-07-19 12:15:10,224 INFO L226 Difference]: Without dead ends: 9767 [2022-07-19 12:15:10,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:15:10,236 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2162 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4749 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 5527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:10,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 185 Invalid, 5527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4749 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 12:15:10,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2022-07-19 12:15:10,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9016. [2022-07-19 12:15:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.3039378813089295) internal successors, (11755), 9015 states have internal predecessors, (11755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11755 transitions. [2022-07-19 12:15:10,502 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11755 transitions. Word has length 95 [2022-07-19 12:15:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:10,503 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11755 transitions. [2022-07-19 12:15:10,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11755 transitions. [2022-07-19 12:15:10,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-19 12:15:10,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:10,511 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:10,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:15:10,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash -259629189, now seen corresponding path program 1 times [2022-07-19 12:15:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:10,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311736185] [2022-07-19 12:15:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:10,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:15:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311736185] [2022-07-19 12:15:10,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311736185] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:10,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:10,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918475014] [2022-07-19 12:15:10,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:10,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:15:10,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:15:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:15:10,658 INFO L87 Difference]: Start difference. First operand 9016 states and 11755 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:13,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:13,929 INFO L93 Difference]: Finished difference Result 22575 states and 30209 transitions. [2022-07-19 12:15:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:15:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2022-07-19 12:15:13,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:13,989 INFO L225 Difference]: With dead ends: 22575 [2022-07-19 12:15:13,989 INFO L226 Difference]: Without dead ends: 12773 [2022-07-19 12:15:14,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:15:14,006 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:14,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 12:15:14,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12773 states. [2022-07-19 12:15:14,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12773 to 12771. [2022-07-19 12:15:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.2173844949099453) internal successors, (15546), 12770 states have internal predecessors, (15546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15546 transitions. [2022-07-19 12:15:14,341 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15546 transitions. Word has length 149 [2022-07-19 12:15:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:14,342 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15546 transitions. [2022-07-19 12:15:14,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15546 transitions. [2022-07-19 12:15:14,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 12:15:14,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:14,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:14,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:15:14,348 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:14,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:14,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1909280368, now seen corresponding path program 1 times [2022-07-19 12:15:14,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:14,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748273216] [2022-07-19 12:15:14,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 41 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:15:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748273216] [2022-07-19 12:15:14,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748273216] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:15:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868489631] [2022-07-19 12:15:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:14,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:15:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:15:14,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:15:14,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:15:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:15:14,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:15:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:15:14,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:15:14,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868489631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:14,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:15:14,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-19 12:15:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565348903] [2022-07-19 12:15:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:14,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:14,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:14,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:15:14,846 INFO L87 Difference]: Start difference. First operand 12771 states and 15546 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:17,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:17,616 INFO L93 Difference]: Finished difference Result 32299 states and 40261 transitions. [2022-07-19 12:15:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:17,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 240 [2022-07-19 12:15:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:17,662 INFO L225 Difference]: With dead ends: 32299 [2022-07-19 12:15:17,662 INFO L226 Difference]: Without dead ends: 20281 [2022-07-19 12:15:17,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:15:17,682 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 802 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2300 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 3045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 972 Invalid, 3045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2300 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:15:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20281 states. [2022-07-19 12:15:17,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20281 to 18779. [2022-07-19 12:15:18,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18779 states, 18778 states have (on average 1.2516774949408882) internal successors, (23504), 18778 states have internal predecessors, (23504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:18,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18779 states to 18779 states and 23504 transitions. [2022-07-19 12:15:18,089 INFO L78 Accepts]: Start accepts. Automaton has 18779 states and 23504 transitions. Word has length 240 [2022-07-19 12:15:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:18,090 INFO L495 AbstractCegarLoop]: Abstraction has 18779 states and 23504 transitions. [2022-07-19 12:15:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 18779 states and 23504 transitions. [2022-07-19 12:15:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-19 12:15:18,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:18,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:18,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:15:18,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-19 12:15:18,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:18,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:18,321 INFO L85 PathProgramCache]: Analyzing trace with hash -587403453, now seen corresponding path program 1 times [2022-07-19 12:15:18,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:18,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549103213] [2022-07-19 12:15:18,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:18,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:18,455 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-19 12:15:18,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549103213] [2022-07-19 12:15:18,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549103213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:18,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:18,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:18,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870760511] [2022-07-19 12:15:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:18,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:18,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:18,459 INFO L87 Difference]: Start difference. First operand 18779 states and 23504 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:21,195 INFO L93 Difference]: Finished difference Result 44315 states and 57008 transitions. [2022-07-19 12:15:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:21,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 250 [2022-07-19 12:15:21,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:21,248 INFO L225 Difference]: With dead ends: 44315 [2022-07-19 12:15:21,248 INFO L226 Difference]: Without dead ends: 26289 [2022-07-19 12:15:21,271 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:15:21,272 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 765 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:21,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1221 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:15:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26289 states. [2022-07-19 12:15:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26289 to 26289. [2022-07-19 12:15:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26289 states, 26288 states have (on average 1.21869293974437) internal successors, (32037), 26288 states have internal predecessors, (32037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:21,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 32037 transitions. [2022-07-19 12:15:21,785 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 32037 transitions. Word has length 250 [2022-07-19 12:15:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:21,786 INFO L495 AbstractCegarLoop]: Abstraction has 26289 states and 32037 transitions. [2022-07-19 12:15:21,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:21,787 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 32037 transitions. [2022-07-19 12:15:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2022-07-19 12:15:21,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:21,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:21,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:15:21,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1123992775, now seen corresponding path program 1 times [2022-07-19 12:15:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:21,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836459707] [2022-07-19 12:15:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:21,936 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-19 12:15:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:21,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836459707] [2022-07-19 12:15:21,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836459707] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:21,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:21,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:15:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125843325] [2022-07-19 12:15:21,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:21,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:21,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:21,939 INFO L87 Difference]: Start difference. First operand 26289 states and 32037 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:25,000 INFO L93 Difference]: Finished difference Result 71353 states and 88217 transitions. [2022-07-19 12:15:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:25,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 265 [2022-07-19 12:15:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:25,085 INFO L225 Difference]: With dead ends: 71353 [2022-07-19 12:15:25,086 INFO L226 Difference]: Without dead ends: 42813 [2022-07-19 12:15:25,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:25,118 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 2781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:25,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 321 Invalid, 2781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:15:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42813 states. [2022-07-19 12:15:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42813 to 39807. [2022-07-19 12:15:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39807 states, 39806 states have (on average 1.177309953273376) internal successors, (46864), 39806 states have internal predecessors, (46864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39807 states to 39807 states and 46864 transitions. [2022-07-19 12:15:25,808 INFO L78 Accepts]: Start accepts. Automaton has 39807 states and 46864 transitions. Word has length 265 [2022-07-19 12:15:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:25,810 INFO L495 AbstractCegarLoop]: Abstraction has 39807 states and 46864 transitions. [2022-07-19 12:15:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 39807 states and 46864 transitions. [2022-07-19 12:15:25,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-19 12:15:25,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:25,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:25,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:15:25,815 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash -659965482, now seen corresponding path program 1 times [2022-07-19 12:15:25,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:25,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288755777] [2022-07-19 12:15:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:15:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:26,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288755777] [2022-07-19 12:15:26,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288755777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:26,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:26,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720281671] [2022-07-19 12:15:26,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:26,111 INFO L87 Difference]: Start difference. First operand 39807 states and 46864 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:28,974 INFO L93 Difference]: Finished difference Result 100640 states and 118187 transitions. [2022-07-19 12:15:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-07-19 12:15:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:29,066 INFO L225 Difference]: With dead ends: 100640 [2022-07-19 12:15:29,066 INFO L226 Difference]: Without dead ends: 61586 [2022-07-19 12:15:29,097 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:15:29,098 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 637 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:29,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1172 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2524 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:15:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2022-07-19 12:15:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 61586. [2022-07-19 12:15:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61586 states, 61585 states have (on average 1.1574084598522367) internal successors, (71279), 61585 states have internal predecessors, (71279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61586 states to 61586 states and 71279 transitions. [2022-07-19 12:15:30,040 INFO L78 Accepts]: Start accepts. Automaton has 61586 states and 71279 transitions. Word has length 268 [2022-07-19 12:15:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:30,041 INFO L495 AbstractCegarLoop]: Abstraction has 61586 states and 71279 transitions. [2022-07-19 12:15:30,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 61586 states and 71279 transitions. [2022-07-19 12:15:30,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-19 12:15:30,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:30,052 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:30,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:15:30,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 462101370, now seen corresponding path program 1 times [2022-07-19 12:15:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:30,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810004749] [2022-07-19 12:15:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 479 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 12:15:30,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810004749] [2022-07-19 12:15:30,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810004749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:30,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:30,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:15:30,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811315110] [2022-07-19 12:15:30,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:30,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:15:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:15:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:15:30,438 INFO L87 Difference]: Start difference. First operand 61586 states and 71279 transitions. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:35,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:35,436 INFO L93 Difference]: Finished difference Result 160720 states and 188666 transitions. [2022-07-19 12:15:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:15:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 409 [2022-07-19 12:15:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:35,592 INFO L225 Difference]: With dead ends: 160720 [2022-07-19 12:15:35,592 INFO L226 Difference]: Without dead ends: 99887 [2022-07-19 12:15:35,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:15:35,759 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 1414 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 4903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:35,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 125 Invalid, 4903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 12:15:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2022-07-19 12:15:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 84116. [2022-07-19 12:15:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.1703620043987397) internal successors, (98445), 84115 states have internal predecessors, (98445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 98445 transitions. [2022-07-19 12:15:36,783 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 98445 transitions. Word has length 409 [2022-07-19 12:15:36,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:36,783 INFO L495 AbstractCegarLoop]: Abstraction has 84116 states and 98445 transitions. [2022-07-19 12:15:36,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 98445 transitions. [2022-07-19 12:15:36,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-07-19 12:15:36,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:36,794 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:36,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:15:36,794 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 273957708, now seen corresponding path program 1 times [2022-07-19 12:15:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:36,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443190058] [2022-07-19 12:15:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:36,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-07-19 12:15:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:37,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443190058] [2022-07-19 12:15:37,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443190058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:37,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:37,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500605682] [2022-07-19 12:15:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:37,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:37,214 INFO L87 Difference]: Start difference. First operand 84116 states and 98445 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:40,573 INFO L93 Difference]: Finished difference Result 202025 states and 237760 transitions. [2022-07-19 12:15:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:40,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 424 [2022-07-19 12:15:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:40,738 INFO L225 Difference]: With dead ends: 202025 [2022-07-19 12:15:40,739 INFO L226 Difference]: Without dead ends: 118662 [2022-07-19 12:15:40,771 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:15:40,772 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 786 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:40,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1244 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:15:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2022-07-19 12:15:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 111903. [2022-07-19 12:15:42,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111903 states, 111902 states have (on average 1.1402030347983056) internal successors, (127591), 111902 states have internal predecessors, (127591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111903 states to 111903 states and 127591 transitions. [2022-07-19 12:15:42,451 INFO L78 Accepts]: Start accepts. Automaton has 111903 states and 127591 transitions. Word has length 424 [2022-07-19 12:15:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:42,452 INFO L495 AbstractCegarLoop]: Abstraction has 111903 states and 127591 transitions. [2022-07-19 12:15:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 111903 states and 127591 transitions. [2022-07-19 12:15:42,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-07-19 12:15:42,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:42,460 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:42,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:15:42,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:42,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash -744188340, now seen corresponding path program 1 times [2022-07-19 12:15:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:42,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255347674] [2022-07-19 12:15:42,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:42,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 373 proven. 54 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:15:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:42,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255347674] [2022-07-19 12:15:42,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255347674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:15:42,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570447344] [2022-07-19 12:15:42,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:42,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:15:42,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:15:42,655 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:15:42,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 12:15:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:42,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 12:15:42,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:15:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-19 12:15:43,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:15:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570447344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:15:43,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-07-19 12:15:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065834214] [2022-07-19 12:15:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:15:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:15:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:15:43,204 INFO L87 Difference]: Start difference. First operand 111903 states and 127591 transitions. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:48,598 INFO L93 Difference]: Finished difference Result 246334 states and 280354 transitions. [2022-07-19 12:15:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:15:48,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 432 [2022-07-19 12:15:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:48,997 INFO L225 Difference]: With dead ends: 246334 [2022-07-19 12:15:48,997 INFO L226 Difference]: Without dead ends: 135184 [2022-07-19 12:15:49,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:15:49,031 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1381 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 5110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:49,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1381 Valid, 445 Invalid, 5110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 12:15:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135184 states. [2022-07-19 12:15:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135184 to 131429. [2022-07-19 12:15:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131429 states, 131428 states have (on average 1.113917886599507) internal successors, (146400), 131428 states have internal predecessors, (146400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131429 states to 131429 states and 146400 transitions. [2022-07-19 12:15:50,978 INFO L78 Accepts]: Start accepts. Automaton has 131429 states and 146400 transitions. Word has length 432 [2022-07-19 12:15:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 131429 states and 146400 transitions. [2022-07-19 12:15:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 131429 states and 146400 transitions. [2022-07-19 12:15:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-07-19 12:15:50,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:50,989 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:51,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 12:15:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:15:51,199 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1595808735, now seen corresponding path program 1 times [2022-07-19 12:15:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864750328] [2022-07-19 12:15:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:51,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 571 backedges. 465 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 12:15:51,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:51,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864750328] [2022-07-19 12:15:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864750328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:51,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:51,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:51,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737832932] [2022-07-19 12:15:51,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:51,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:51,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:51,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:51,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:51,423 INFO L87 Difference]: Start difference. First operand 131429 states and 146400 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:15:54,537 INFO L93 Difference]: Finished difference Result 264358 states and 294352 transitions. [2022-07-19 12:15:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:15:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 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 466 [2022-07-19 12:15:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:15:54,725 INFO L225 Difference]: With dead ends: 264358 [2022-07-19 12:15:54,725 INFO L226 Difference]: Without dead ends: 133682 [2022-07-19 12:15:54,801 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:15:54,801 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 746 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2052 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:15:54,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 997 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2052 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:15:55,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133682 states. [2022-07-19 12:15:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133682 to 130678. [2022-07-19 12:15:56,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130678 states, 130677 states have (on average 1.0923957544173803) internal successors, (142751), 130677 states have internal predecessors, (142751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130678 states to 130678 states and 142751 transitions. [2022-07-19 12:15:56,698 INFO L78 Accepts]: Start accepts. Automaton has 130678 states and 142751 transitions. Word has length 466 [2022-07-19 12:15:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:15:56,698 INFO L495 AbstractCegarLoop]: Abstraction has 130678 states and 142751 transitions. [2022-07-19 12:15:56,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:15:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 130678 states and 142751 transitions. [2022-07-19 12:15:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-07-19 12:15:56,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:15:56,708 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:15:56,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:15:56,709 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:15:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:15:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1341420984, now seen corresponding path program 1 times [2022-07-19 12:15:56,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:15:56,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499185977] [2022-07-19 12:15:56,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:15:56,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:15:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:15:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 689 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-19 12:15:57,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:15:57,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499185977] [2022-07-19 12:15:57,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499185977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:15:57,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:15:57,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:15:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790845993] [2022-07-19 12:15:57,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:15:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:15:57,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:15:57,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:15:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:15:57,272 INFO L87 Difference]: Start difference. First operand 130678 states and 142751 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:16:00,726 INFO L93 Difference]: Finished difference Result 263607 states and 287776 transitions. [2022-07-19 12:16:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:16:00,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 517 [2022-07-19 12:16:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:16:00,893 INFO L225 Difference]: With dead ends: 263607 [2022-07-19 12:16:00,894 INFO L226 Difference]: Without dead ends: 133682 [2022-07-19 12:16:00,934 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:16:00,935 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 694 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:16:00,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 1187 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:16:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133682 states. [2022-07-19 12:16:02,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133682 to 129176. [2022-07-19 12:16:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129176 states, 129175 states have (on average 1.0828643313334623) internal successors, (139879), 129175 states have internal predecessors, (139879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129176 states to 129176 states and 139879 transitions. [2022-07-19 12:16:03,001 INFO L78 Accepts]: Start accepts. Automaton has 129176 states and 139879 transitions. Word has length 517 [2022-07-19 12:16:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:16:03,001 INFO L495 AbstractCegarLoop]: Abstraction has 129176 states and 139879 transitions. [2022-07-19 12:16:03,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:03,001 INFO L276 IsEmpty]: Start isEmpty. Operand 129176 states and 139879 transitions. [2022-07-19 12:16:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-07-19 12:16:03,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:16:03,011 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:16:03,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 12:16:03,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:16:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:16:03,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1307422627, now seen corresponding path program 1 times [2022-07-19 12:16:03,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:16:03,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392913394] [2022-07-19 12:16:03,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:16:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:16:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:16:03,162 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 614 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-07-19 12:16:03,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:16:03,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392913394] [2022-07-19 12:16:03,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392913394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:16:03,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:16:03,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:16:03,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185918990] [2022-07-19 12:16:03,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:16:03,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:16:03,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:16:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:16:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:16:03,165 INFO L87 Difference]: Start difference. First operand 129176 states and 139879 transitions. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:16:06,762 INFO L93 Difference]: Finished difference Result 308667 states and 334483 transitions. [2022-07-19 12:16:06,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:16:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 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 518 [2022-07-19 12:16:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:16:06,985 INFO L225 Difference]: With dead ends: 308667 [2022-07-19 12:16:06,985 INFO L226 Difference]: Without dead ends: 180244 [2022-07-19 12:16:07,049 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:16:07,049 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 689 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:16:07,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 1299 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:16:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180244 states. [2022-07-19 12:16:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180244 to 174236. [2022-07-19 12:16:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174236 states, 174235 states have (on average 1.0729474560220391) internal successors, (186945), 174235 states have internal predecessors, (186945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:09,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174236 states to 174236 states and 186945 transitions. [2022-07-19 12:16:09,713 INFO L78 Accepts]: Start accepts. Automaton has 174236 states and 186945 transitions. Word has length 518 [2022-07-19 12:16:09,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:16:09,713 INFO L495 AbstractCegarLoop]: Abstraction has 174236 states and 186945 transitions. [2022-07-19 12:16:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 174236 states and 186945 transitions. [2022-07-19 12:16:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-07-19 12:16:09,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:16:09,730 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:16:09,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:16:09,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:16:09,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:16:09,732 INFO L85 PathProgramCache]: Analyzing trace with hash 812629498, now seen corresponding path program 1 times [2022-07-19 12:16:09,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:16:09,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483022799] [2022-07-19 12:16:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:16:09,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:16:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:16:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 487 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-19 12:16:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:16:10,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483022799] [2022-07-19 12:16:10,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483022799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:16:10,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:16:10,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:16:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213204334] [2022-07-19 12:16:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:16:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:16:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:16:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:16:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:16:10,482 INFO L87 Difference]: Start difference. First operand 174236 states and 186945 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:16:14,299 INFO L93 Difference]: Finished difference Result 374755 states and 403900 transitions. [2022-07-19 12:16:14,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:16:14,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 540 [2022-07-19 12:16:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:16:14,666 INFO L225 Difference]: With dead ends: 374755 [2022-07-19 12:16:14,666 INFO L226 Difference]: Without dead ends: 201272 [2022-07-19 12:16:14,778 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:16:14,778 INFO L413 NwaCegarLoop]: 1255 mSDtfsCounter, 564 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 2707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:16:14,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1263 Invalid, 2707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:16:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201272 states. [2022-07-19 12:16:17,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201272 to 191509. [2022-07-19 12:16:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191509 states, 191508 states have (on average 1.0637049104998224) internal successors, (203708), 191508 states have internal predecessors, (203708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191509 states to 191509 states and 203708 transitions. [2022-07-19 12:16:17,736 INFO L78 Accepts]: Start accepts. Automaton has 191509 states and 203708 transitions. Word has length 540 [2022-07-19 12:16:17,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:16:17,736 INFO L495 AbstractCegarLoop]: Abstraction has 191509 states and 203708 transitions. [2022-07-19 12:16:17,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:17,737 INFO L276 IsEmpty]: Start isEmpty. Operand 191509 states and 203708 transitions. [2022-07-19 12:16:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-07-19 12:16:17,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:16:17,749 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:16:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:16:17,749 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:16:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:16:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1580969227, now seen corresponding path program 1 times [2022-07-19 12:16:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:16:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62356876] [2022-07-19 12:16:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:16:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:16:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:16:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-19 12:16:17,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:16:17,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62356876] [2022-07-19 12:16:17,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62356876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:16:17,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:16:17,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:16:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411782852] [2022-07-19 12:16:17,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:16:17,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:16:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:16:17,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:16:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:16:17,941 INFO L87 Difference]: Start difference. First operand 191509 states and 203708 transitions. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:16:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:16:22,082 INFO L93 Difference]: Finished difference Result 383016 states and 407412 transitions. [2022-07-19 12:16:22,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:16:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 562 [2022-07-19 12:16:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:16:22,435 INFO L225 Difference]: With dead ends: 383016 [2022-07-19 12:16:22,435 INFO L226 Difference]: Without dead ends: 192260 [2022-07-19 12:16:22,542 INFO L412 NwaCegarLoop]: 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 [2022-07-19 12:16:22,543 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 758 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:16:22,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 216 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:16:22,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192260 states. [2022-07-19 12:16:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192260 to 183999. [2022-07-19 12:16:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183999 states, 183998 states have (on average 1.05277231274253) internal successors, (193708), 183998 states have internal predecessors, (193708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)