./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31d5f3a14d915ecc08c5dc9b9c0c33fc37690ec404e8b1546bed720bc4205a6b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:40:38,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:40:38,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:40:38,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:40:38,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:40:38,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:40:38,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:40:38,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:40:38,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:40:38,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:40:38,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:40:38,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:40:38,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:40:38,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:40:38,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:40:38,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:40:38,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:40:38,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:40:38,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:40:38,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:40:38,905 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:40:38,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:40:38,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:40:38,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:40:38,908 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:40:38,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:40:38,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:40:38,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:40:38,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:40:38,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:40:38,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:40:38,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:40:38,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:40:38,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:40:38,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:40:38,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:40:38,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:40:38,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:40:38,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:40:38,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:40:38,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:40:38,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:40:38,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:40:38,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:40:38,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:40:38,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:40:38,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:40:38,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:40:38,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:40:38,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:40:38,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:40:38,946 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:40:38,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:40:38,947 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:40:38,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:40:38,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:40:38,949 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:40:38,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:40:38,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:40:38,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:40:38,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:40:38,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:40:38,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:40:38,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:40:38,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:40:38,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:40:38,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:40:38,951 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:40:38,951 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:40:38,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:40:38,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d5f3a14d915ecc08c5dc9b9c0c33fc37690ec404e8b1546bed720bc4205a6b [2022-07-22 18:40:39,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:40:39,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:40:39,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:40:39,152 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:40:39,153 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:40:39,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-22 18:40:39,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab12f2c9/fed42a35f5ee4832ac382116ff4cdc54/FLAG972b9815a [2022-07-22 18:40:39,556 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:40:39,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-22 18:40:39,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab12f2c9/fed42a35f5ee4832ac382116ff4cdc54/FLAG972b9815a [2022-07-22 18:40:39,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ab12f2c9/fed42a35f5ee4832ac382116ff4cdc54 [2022-07-22 18:40:39,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:40:39,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:40:39,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:40:39,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:40:39,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:40:39,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:40:39" (1/1) ... [2022-07-22 18:40:39,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a5dba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:39, skipping insertion in model container [2022-07-22 18:40:39,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:40:39" (1/1) ... [2022-07-22 18:40:39,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:40:39,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:40:40,270 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13904,13917] [2022-07-22 18:40:40,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:40:40,365 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:40:40,431 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c[13904,13917] [2022-07-22 18:40:40,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:40:40,486 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:40:40,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40 WrapperNode [2022-07-22 18:40:40,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:40:40,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:40:40,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:40:40,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:40:40,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,556 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1189 [2022-07-22 18:40:40,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:40:40,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:40:40,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:40:40,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:40:40,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:40:40,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:40:40,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:40:40,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:40:40,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (1/1) ... [2022-07-22 18:40:40,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:40:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:40:40,677 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) [2022-07-22 18:40:40,750 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 [2022-07-22 18:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:40:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:40:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:40:40,916 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:40:40,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:40:41,492 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:40:41,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:40:41,520 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:40:41,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:40:41 BoogieIcfgContainer [2022-07-22 18:40:41,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:40:41,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:40:41,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:40:41,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:40:41,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:40:39" (1/3) ... [2022-07-22 18:40:41,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3996fe9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:40:41, skipping insertion in model container [2022-07-22 18:40:41,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:40:40" (2/3) ... [2022-07-22 18:40:41,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3996fe9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:40:41, skipping insertion in model container [2022-07-22 18:40:41,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:40:41" (3/3) ... [2022-07-22 18:40:41,530 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2022-07-22 18:40:41,540 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:40:41,540 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:40:41,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:40:41,597 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@2d4f9268, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32922420 [2022-07-22 18:40:41,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:40:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 334 states have (on average 1.652694610778443) internal successors, (552), 335 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 18:40:41,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:41,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:41,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:41,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash 507379928, now seen corresponding path program 1 times [2022-07-22 18:40:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:41,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588304676] [2022-07-22 18:40:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:41,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588304676] [2022-07-22 18:40:41,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588304676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:41,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:41,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:40:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620465319] [2022-07-22 18:40:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:41,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:40:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:40:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:40:41,931 INFO L87 Difference]: Start difference. First operand has 336 states, 334 states have (on average 1.652694610778443) internal successors, (552), 335 states have internal predecessors, (552), 0 states have call successors, (0), 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 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:42,062 INFO L93 Difference]: Finished difference Result 642 states and 1042 transitions. [2022-07-22 18:40:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:40:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-07-22 18:40:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:42,082 INFO L225 Difference]: With dead ends: 642 [2022-07-22 18:40:42,083 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 18:40:42,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:40:42,090 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 491 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:42,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 1129 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:42,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 18:40:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-22 18:40:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.5451807228915662) internal successors, (513), 332 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 513 transitions. [2022-07-22 18:40:42,128 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 513 transitions. Word has length 127 [2022-07-22 18:40:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:42,128 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 513 transitions. [2022-07-22 18:40:42,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,129 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 513 transitions. [2022-07-22 18:40:42,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 18:40:42,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:42,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:40:42,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:42,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1226582684, now seen corresponding path program 1 times [2022-07-22 18:40:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:42,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103556912] [2022-07-22 18:40:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:42,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103556912] [2022-07-22 18:40:42,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103556912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:42,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:42,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750146089] [2022-07-22 18:40:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:42,240 INFO L87 Difference]: Start difference. First operand 333 states and 513 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) [2022-07-22 18:40:42,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:42,309 INFO L93 Difference]: Finished difference Result 804 states and 1267 transitions. [2022-07-22 18:40:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:42,309 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 157 [2022-07-22 18:40:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:42,312 INFO L225 Difference]: With dead ends: 804 [2022-07-22 18:40:42,312 INFO L226 Difference]: Without dead ends: 523 [2022-07-22 18:40:42,316 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 [2022-07-22 18:40:42,317 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 346 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:42,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 998 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-07-22 18:40:42,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 521. [2022-07-22 18:40:42,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.5596153846153846) internal successors, (811), 520 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 811 transitions. [2022-07-22 18:40:42,360 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 811 transitions. Word has length 157 [2022-07-22 18:40:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:42,363 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 811 transitions. [2022-07-22 18:40:42,363 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) [2022-07-22 18:40:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 811 transitions. [2022-07-22 18:40:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-22 18:40:42,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:42,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:42,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:40:42,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:42,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1375467905, now seen corresponding path program 1 times [2022-07-22 18:40:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:42,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361618728] [2022-07-22 18:40:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:42,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:42,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361618728] [2022-07-22 18:40:42,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361618728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:42,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:42,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042046211] [2022-07-22 18:40:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:42,498 INFO L87 Difference]: Start difference. First operand 521 states and 811 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:42,553 INFO L93 Difference]: Finished difference Result 1322 states and 2090 transitions. [2022-07-22 18:40:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2022-07-22 18:40:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:42,557 INFO L225 Difference]: With dead ends: 1322 [2022-07-22 18:40:42,558 INFO L226 Difference]: Without dead ends: 859 [2022-07-22 18:40:42,558 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 [2022-07-22 18:40:42,563 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 334 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:42,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 897 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-07-22 18:40:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 857. [2022-07-22 18:40:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 1.566588785046729) internal successors, (1341), 856 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1341 transitions. [2022-07-22 18:40:42,625 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1341 transitions. Word has length 160 [2022-07-22 18:40:42,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1341 transitions. [2022-07-22 18:40:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1341 transitions. [2022-07-22 18:40:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 18:40:42,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:42,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:42,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:40:42,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:42,630 INFO L85 PathProgramCache]: Analyzing trace with hash -401831765, now seen corresponding path program 1 times [2022-07-22 18:40:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:42,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878989184] [2022-07-22 18:40:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:42,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:42,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878989184] [2022-07-22 18:40:42,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878989184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:42,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:42,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:42,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536161479] [2022-07-22 18:40:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:42,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:42,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:42,731 INFO L87 Difference]: Start difference. First operand 857 states and 1341 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:42,815 INFO L93 Difference]: Finished difference Result 2240 states and 3538 transitions. [2022-07-22 18:40:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:42,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2022-07-22 18:40:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:42,821 INFO L225 Difference]: With dead ends: 2240 [2022-07-22 18:40:42,821 INFO L226 Difference]: Without dead ends: 1447 [2022-07-22 18:40:42,823 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 [2022-07-22 18:40:42,828 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 320 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:42,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 989 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2022-07-22 18:40:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1445. [2022-07-22 18:40:42,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.5657894736842106) internal successors, (2261), 1444 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2261 transitions. [2022-07-22 18:40:42,886 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2261 transitions. Word has length 163 [2022-07-22 18:40:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:42,887 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2261 transitions. [2022-07-22 18:40:42,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2261 transitions. [2022-07-22 18:40:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 18:40:42,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:42,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:40:42,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1333810302, now seen corresponding path program 1 times [2022-07-22 18:40:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600744748] [2022-07-22 18:40:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:42,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600744748] [2022-07-22 18:40:42,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600744748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:42,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:42,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:42,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133427195] [2022-07-22 18:40:42,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:42,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:42,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:42,956 INFO L87 Difference]: Start difference. First operand 1445 states and 2261 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:43,078 INFO L93 Difference]: Finished difference Result 3826 states and 6014 transitions. [2022-07-22 18:40:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:43,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 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 166 [2022-07-22 18:40:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:43,087 INFO L225 Difference]: With dead ends: 3826 [2022-07-22 18:40:43,087 INFO L226 Difference]: Without dead ends: 2451 [2022-07-22 18:40:43,090 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 [2022-07-22 18:40:43,090 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 308 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:43,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 857 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:43,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2022-07-22 18:40:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2449. [2022-07-22 18:40:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 2448 states have (on average 1.5575980392156863) internal successors, (3813), 2448 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3813 transitions. [2022-07-22 18:40:43,214 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3813 transitions. Word has length 166 [2022-07-22 18:40:43,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:43,215 INFO L495 AbstractCegarLoop]: Abstraction has 2449 states and 3813 transitions. [2022-07-22 18:40:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3813 transitions. [2022-07-22 18:40:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 18:40:43,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:43,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:43,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:40:43,222 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:43,223 INFO L85 PathProgramCache]: Analyzing trace with hash -109197312, now seen corresponding path program 1 times [2022-07-22 18:40:43,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:43,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759841598] [2022-07-22 18:40:43,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:43,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759841598] [2022-07-22 18:40:43,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759841598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:43,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:43,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:40:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145502839] [2022-07-22 18:40:43,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:43,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:40:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:43,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:40:43,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:40:43,299 INFO L87 Difference]: Start difference. First operand 2449 states and 3813 transitions. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:44,589 INFO L93 Difference]: Finished difference Result 22976 states and 35818 transitions. [2022-07-22 18:40:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:40:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2022-07-22 18:40:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:44,671 INFO L225 Difference]: With dead ends: 22976 [2022-07-22 18:40:44,671 INFO L226 Difference]: Without dead ends: 20603 [2022-07-22 18:40:44,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:40:44,682 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3286 mSDsluCounter, 7225 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3286 SdHoareTripleChecker+Valid, 8879 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:44,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3286 Valid, 8879 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:40:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2022-07-22 18:40:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 4851. [2022-07-22 18:40:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.534639175257732) internal successors, (7443), 4850 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 7443 transitions. [2022-07-22 18:40:45,129 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 7443 transitions. Word has length 169 [2022-07-22 18:40:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:45,129 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 7443 transitions. [2022-07-22 18:40:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 7443 transitions. [2022-07-22 18:40:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-22 18:40:45,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:45,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:45,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:40:45,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -685585935, now seen corresponding path program 1 times [2022-07-22 18:40:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:45,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958332874] [2022-07-22 18:40:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:45,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958332874] [2022-07-22 18:40:45,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958332874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:45,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:45,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:45,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977525246] [2022-07-22 18:40:45,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:45,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:45,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:45,197 INFO L87 Difference]: Start difference. First operand 4851 states and 7443 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:45,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:45,757 INFO L93 Difference]: Finished difference Result 13321 states and 20415 transitions. [2022-07-22 18:40:45,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:45,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-07-22 18:40:45,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:45,771 INFO L225 Difference]: With dead ends: 13321 [2022-07-22 18:40:45,772 INFO L226 Difference]: Without dead ends: 8510 [2022-07-22 18:40:45,778 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 [2022-07-22 18:40:45,778 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 337 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:45,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1172 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:45,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2022-07-22 18:40:46,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 8508. [2022-07-22 18:40:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8508 states, 8507 states have (on average 1.5183966145527212) internal successors, (12917), 8507 states have internal predecessors, (12917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8508 states to 8508 states and 12917 transitions. [2022-07-22 18:40:46,404 INFO L78 Accepts]: Start accepts. Automaton has 8508 states and 12917 transitions. Word has length 172 [2022-07-22 18:40:46,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:46,404 INFO L495 AbstractCegarLoop]: Abstraction has 8508 states and 12917 transitions. [2022-07-22 18:40:46,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 8508 states and 12917 transitions. [2022-07-22 18:40:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 18:40:46,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:46,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:40:46,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:46,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:46,420 INFO L85 PathProgramCache]: Analyzing trace with hash 443804160, now seen corresponding path program 1 times [2022-07-22 18:40:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:46,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62284967] [2022-07-22 18:40:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:46,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62284967] [2022-07-22 18:40:46,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62284967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:46,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:46,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:40:46,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041280709] [2022-07-22 18:40:46,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:46,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:40:46,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:40:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:40:46,481 INFO L87 Difference]: Start difference. First operand 8508 states and 12917 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:47,314 INFO L93 Difference]: Finished difference Result 20430 states and 30991 transitions. [2022-07-22 18:40:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:40:47,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-22 18:40:47,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:47,336 INFO L225 Difference]: With dead ends: 20430 [2022-07-22 18:40:47,336 INFO L226 Difference]: Without dead ends: 11990 [2022-07-22 18:40:47,348 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 [2022-07-22 18:40:47,349 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 352 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:47,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 794 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:40:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11990 states. [2022-07-22 18:40:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11990 to 11924. [2022-07-22 18:40:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11924 states, 11923 states have (on average 1.4929128575023065) internal successors, (17800), 11923 states have internal predecessors, (17800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11924 states to 11924 states and 17800 transitions. [2022-07-22 18:40:48,375 INFO L78 Accepts]: Start accepts. Automaton has 11924 states and 17800 transitions. Word has length 173 [2022-07-22 18:40:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:48,375 INFO L495 AbstractCegarLoop]: Abstraction has 11924 states and 17800 transitions. [2022-07-22 18:40:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 11924 states and 17800 transitions. [2022-07-22 18:40:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 18:40:48,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:48,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:48,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:40:48,395 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1404207551, now seen corresponding path program 1 times [2022-07-22 18:40:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:48,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958449854] [2022-07-22 18:40:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:48,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:48,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958449854] [2022-07-22 18:40:48,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958449854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:48,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:48,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:40:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254706455] [2022-07-22 18:40:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:48,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:40:48,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:40:48,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:40:48,548 INFO L87 Difference]: Start difference. First operand 11924 states and 17800 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:49,489 INFO L93 Difference]: Finished difference Result 23781 states and 35521 transitions. [2022-07-22 18:40:49,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:40:49,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2022-07-22 18:40:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:49,507 INFO L225 Difference]: With dead ends: 23781 [2022-07-22 18:40:49,507 INFO L226 Difference]: Without dead ends: 11926 [2022-07-22 18:40:49,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-22 18:40:49,519 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 557 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:49,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 2374 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:40:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11926 states. [2022-07-22 18:40:50,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11926 to 11924. [2022-07-22 18:40:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11924 states, 11923 states have (on average 1.478067600436132) internal successors, (17623), 11923 states have internal predecessors, (17623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11924 states to 11924 states and 17623 transitions. [2022-07-22 18:40:50,260 INFO L78 Accepts]: Start accepts. Automaton has 11924 states and 17623 transitions. Word has length 173 [2022-07-22 18:40:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:50,263 INFO L495 AbstractCegarLoop]: Abstraction has 11924 states and 17623 transitions. [2022-07-22 18:40:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 11924 states and 17623 transitions. [2022-07-22 18:40:50,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 18:40:50,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:50,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:40:50,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1620734737, now seen corresponding path program 1 times [2022-07-22 18:40:50,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:50,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451476415] [2022-07-22 18:40:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:50,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:50,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451476415] [2022-07-22 18:40:50,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451476415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:50,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:50,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:40:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468486916] [2022-07-22 18:40:50,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:40:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:50,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:40:50,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:40:50,387 INFO L87 Difference]: Start difference. First operand 11924 states and 17623 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:40:54,161 INFO L93 Difference]: Finished difference Result 60589 states and 89352 transitions. [2022-07-22 18:40:54,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:40:54,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-22 18:40:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:40:54,259 INFO L225 Difference]: With dead ends: 60589 [2022-07-22 18:40:54,259 INFO L226 Difference]: Without dead ends: 52435 [2022-07-22 18:40:54,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:40:54,276 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 2624 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:40:54,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 3214 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:40:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52435 states. [2022-07-22 18:40:56,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52435 to 22673. [2022-07-22 18:40:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22673 states, 22672 states have (on average 1.4693895553987297) internal successors, (33314), 22672 states have internal predecessors, (33314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22673 states to 22673 states and 33314 transitions. [2022-07-22 18:40:56,236 INFO L78 Accepts]: Start accepts. Automaton has 22673 states and 33314 transitions. Word has length 174 [2022-07-22 18:40:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:40:56,236 INFO L495 AbstractCegarLoop]: Abstraction has 22673 states and 33314 transitions. [2022-07-22 18:40:56,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:40:56,237 INFO L276 IsEmpty]: Start isEmpty. Operand 22673 states and 33314 transitions. [2022-07-22 18:40:56,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 18:40:56,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:40:56,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:40:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:40:56,270 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:40:56,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:40:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash -490509957, now seen corresponding path program 1 times [2022-07-22 18:40:56,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:40:56,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081819175] [2022-07-22 18:40:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:40:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:40:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:40:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:40:56,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:40:56,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081819175] [2022-07-22 18:40:56,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081819175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:40:56,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:40:56,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:40:56,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015502725] [2022-07-22 18:40:56,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:40:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:40:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:40:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:40:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:40:56,351 INFO L87 Difference]: Start difference. First operand 22673 states and 33314 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:41:01,515 INFO L93 Difference]: Finished difference Result 70007 states and 103072 transitions. [2022-07-22 18:41:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:41:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-22 18:41:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:41:01,628 INFO L225 Difference]: With dead ends: 70007 [2022-07-22 18:41:01,629 INFO L226 Difference]: Without dead ends: 62285 [2022-07-22 18:41:01,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:41:01,648 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 2616 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2616 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:41:01,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2616 Valid, 3730 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:41:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62285 states. [2022-07-22 18:41:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62285 to 36813. [2022-07-22 18:41:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36813 states, 36812 states have (on average 1.4612354666956426) internal successors, (53791), 36812 states have internal predecessors, (53791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:04,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36813 states to 36813 states and 53791 transitions. [2022-07-22 18:41:04,855 INFO L78 Accepts]: Start accepts. Automaton has 36813 states and 53791 transitions. Word has length 174 [2022-07-22 18:41:04,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:41:04,855 INFO L495 AbstractCegarLoop]: Abstraction has 36813 states and 53791 transitions. [2022-07-22 18:41:04,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:04,856 INFO L276 IsEmpty]: Start isEmpty. Operand 36813 states and 53791 transitions. [2022-07-22 18:41:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 18:41:04,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:41:04,907 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:41:04,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:41:04,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:41:04,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:41:04,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1276981041, now seen corresponding path program 1 times [2022-07-22 18:41:04,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:41:04,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355688621] [2022-07-22 18:41:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:41:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:41:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:41:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:41:04,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:41:04,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355688621] [2022-07-22 18:41:04,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355688621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:41:04,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:41:04,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:41:04,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285596400] [2022-07-22 18:41:04,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:41:04,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:41:04,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:41:04,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:41:04,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:41:04,997 INFO L87 Difference]: Start difference. First operand 36813 states and 53791 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:41:11,061 INFO L93 Difference]: Finished difference Result 78927 states and 116048 transitions. [2022-07-22 18:41:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:41:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-22 18:41:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:41:11,182 INFO L225 Difference]: With dead ends: 78927 [2022-07-22 18:41:11,182 INFO L226 Difference]: Without dead ends: 71061 [2022-07-22 18:41:11,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:41:11,213 INFO L413 NwaCegarLoop]: 1167 mSDtfsCounter, 2432 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:41:11,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 3946 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:41:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71061 states. [2022-07-22 18:41:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71061 to 46464. [2022-07-22 18:41:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46464 states, 46463 states have (on average 1.4605384929944256) internal successors, (67861), 46463 states have internal predecessors, (67861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46464 states to 46464 states and 67861 transitions. [2022-07-22 18:41:15,628 INFO L78 Accepts]: Start accepts. Automaton has 46464 states and 67861 transitions. Word has length 174 [2022-07-22 18:41:15,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:41:15,628 INFO L495 AbstractCegarLoop]: Abstraction has 46464 states and 67861 transitions. [2022-07-22 18:41:15,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:15,629 INFO L276 IsEmpty]: Start isEmpty. Operand 46464 states and 67861 transitions. [2022-07-22 18:41:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 18:41:15,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:41:15,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:41:15,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:41:15,686 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:41:15,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:41:15,687 INFO L85 PathProgramCache]: Analyzing trace with hash 815173252, now seen corresponding path program 1 times [2022-07-22 18:41:15,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:41:15,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583724404] [2022-07-22 18:41:15,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:41:15,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:41:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:41:15,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:41:15,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:41:15,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583724404] [2022-07-22 18:41:15,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583724404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:41:15,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:41:15,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:41:15,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111530847] [2022-07-22 18:41:15,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:41:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:41:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:41:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:41:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:41:15,755 INFO L87 Difference]: Start difference. First operand 46464 states and 67861 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:41:22,860 INFO L93 Difference]: Finished difference Result 88515 states and 130020 transitions. [2022-07-22 18:41:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:41:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 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 174 [2022-07-22 18:41:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:41:22,981 INFO L225 Difference]: With dead ends: 88515 [2022-07-22 18:41:22,981 INFO L226 Difference]: Without dead ends: 80505 [2022-07-22 18:41:23,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:41:23,016 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 2514 mSDsluCounter, 3755 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2514 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:41:23,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2514 Valid, 5149 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:41:23,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80505 states. [2022-07-22 18:41:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80505 to 56286. [2022-07-22 18:41:28,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56286 states, 56285 states have (on average 1.4602824908945544) internal successors, (82192), 56285 states have internal predecessors, (82192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:28,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56286 states to 56286 states and 82192 transitions. [2022-07-22 18:41:28,508 INFO L78 Accepts]: Start accepts. Automaton has 56286 states and 82192 transitions. Word has length 174 [2022-07-22 18:41:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:41:28,508 INFO L495 AbstractCegarLoop]: Abstraction has 56286 states and 82192 transitions. [2022-07-22 18:41:28,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 56286 states and 82192 transitions. [2022-07-22 18:41:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-22 18:41:28,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:41:28,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:41:28,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:41:28,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:41:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:41:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash 773645085, now seen corresponding path program 1 times [2022-07-22 18:41:28,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:41:28,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647634494] [2022-07-22 18:41:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:41:28,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:41:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:41:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:41:28,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:41:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647634494] [2022-07-22 18:41:28,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647634494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:41:28,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:41:28,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:41:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887749190] [2022-07-22 18:41:28,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:41:28,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 18:41:28,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:41:28,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 18:41:28,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:41:28,655 INFO L87 Difference]: Start difference. First operand 56286 states and 82192 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:41:37,076 INFO L93 Difference]: Finished difference Result 93088 states and 136880 transitions. [2022-07-22 18:41:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:41:37,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2022-07-22 18:41:37,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:41:37,205 INFO L225 Difference]: With dead ends: 93088 [2022-07-22 18:41:37,205 INFO L226 Difference]: Without dead ends: 87454 [2022-07-22 18:41:37,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:41:37,233 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 2688 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:41:37,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2688 Valid, 4377 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:41:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87454 states. [2022-07-22 18:41:44,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87454 to 63235. [2022-07-22 18:41:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63235 states, 63234 states have (on average 1.4628206344687984) internal successors, (92500), 63234 states have internal predecessors, (92500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63235 states to 63235 states and 92500 transitions. [2022-07-22 18:41:44,601 INFO L78 Accepts]: Start accepts. Automaton has 63235 states and 92500 transitions. Word has length 175 [2022-07-22 18:41:44,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:41:44,601 INFO L495 AbstractCegarLoop]: Abstraction has 63235 states and 92500 transitions. [2022-07-22 18:41:44,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:41:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 63235 states and 92500 transitions. [2022-07-22 18:41:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 18:41:44,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:41:44,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:41:44,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:41:44,697 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:41:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:41:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash -153189903, now seen corresponding path program 1 times [2022-07-22 18:41:44,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:41:44,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162831086] [2022-07-22 18:41:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:41:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:41:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:41:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:41:44,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:41:44,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162831086] [2022-07-22 18:41:44,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162831086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:41:44,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:41:44,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:41:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925199926] [2022-07-22 18:41:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:41:44,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:41:44,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:41:44,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:41:44,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:41:44,792 INFO L87 Difference]: Start difference. First operand 63235 states and 92500 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)