./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.06.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/systemc/transmitter.06.cil.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 bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:17:29,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:17:29,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:17:29,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:17:29,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:17:29,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:17:29,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:17:29,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:17:29,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:17:29,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:17:29,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:17:29,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:17:29,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:17:29,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:17:29,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:17:29,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:17:29,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:17:29,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:17:29,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:17:29,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:17:29,626 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:17:29,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:17:29,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:17:29,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:17:29,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:17:29,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:17:29,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:17:29,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:17:29,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:17:29,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:17:29,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:17:29,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:17:29,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:17:29,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:17:29,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:17:29,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:17:29,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:17:29,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:17:29,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:17:29,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:17:29,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:17:29,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:17:29,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:17:29,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:17:29,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:17:29,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:17:29,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:17:29,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:17:29,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:17:29,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:17:29,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:17:29,672 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:17:29,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:17:29,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:17:29,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:17:29,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:17:29,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:17:29,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:17:29,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:17:29,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:17:29,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:17:29,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:17:29,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:17:29,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:17:29,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:17:29,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:17:29,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:17:29,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:17:29,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:17:29,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:17:29,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:17:29,682 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:17:29,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:17:29,682 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:17:29,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:17:29,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:17:29,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbfdf3f22061e77485b28b33d06a9820d2c4b7aa22afc378a1743c2d746b69df [2022-07-21 05:17:30,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:17:30,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:17:30,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:17:30,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:17:30,083 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:17:30,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.06.cil.c [2022-07-21 05:17:30,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa24cdf47/2fa6aecbefaf43cca0e90fdc1642a7c9/FLAG57f0bad9b [2022-07-21 05:17:30,505 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:17:30,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.06.cil.c [2022-07-21 05:17:30,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa24cdf47/2fa6aecbefaf43cca0e90fdc1642a7c9/FLAG57f0bad9b [2022-07-21 05:17:30,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa24cdf47/2fa6aecbefaf43cca0e90fdc1642a7c9 [2022-07-21 05:17:30,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:17:30,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:17:30,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:17:30,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:17:30,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:17:30,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:17:30" (1/1) ... [2022-07-21 05:17:30,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7143b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:30, skipping insertion in model container [2022-07-21 05:17:30,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:17:30" (1/1) ... [2022-07-21 05:17:30,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:17:30,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:17:31,082 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/systemc/transmitter.06.cil.c[706,719] [2022-07-21 05:17:31,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:17:31,210 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:17:31,234 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/systemc/transmitter.06.cil.c[706,719] [2022-07-21 05:17:31,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:17:31,321 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:17:31,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31 WrapperNode [2022-07-21 05:17:31,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:17:31,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:17:31,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:17:31,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:17:31,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,388 INFO L137 Inliner]: procedures = 40, calls = 48, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 492 [2022-07-21 05:17:31,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:17:31,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:17:31,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:17:31,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:17:31,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:17:31,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:17:31,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:17:31,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:17:31,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (1/1) ... [2022-07-21 05:17:31,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:17:31,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:17:31,489 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) [2022-07-21 05:17:31,507 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 [2022-07-21 05:17:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:17:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:17:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:17:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:17:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:17:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:17:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:17:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:17:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:17:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:17:31,531 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:17:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:17:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:17:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:17:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:17:31,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:17:31,597 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:17:31,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:17:31,970 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:17:31,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:17:31,978 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-21 05:17:31,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:17:31 BoogieIcfgContainer [2022-07-21 05:17:31,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:17:31,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:17:31,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:17:31,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:17:31,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:17:30" (1/3) ... [2022-07-21 05:17:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7786ec5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:17:31, skipping insertion in model container [2022-07-21 05:17:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:17:31" (2/3) ... [2022-07-21 05:17:31,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7786ec5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:17:31, skipping insertion in model container [2022-07-21 05:17:31,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:17:31" (3/3) ... [2022-07-21 05:17:31,985 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.06.cil.c [2022-07-21 05:17:31,994 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:17:31,995 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:17:32,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:17:32,039 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@4f5e526, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@902883e [2022-07-21 05:17:32,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:17:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 05:17:32,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:32,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:32,053 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] [2022-07-21 05:17:32,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1353655359, now seen corresponding path program 1 times [2022-07-21 05:17:32,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:32,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307993249] [2022-07-21 05:17:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:32,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:32,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:32,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:32,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307993249] [2022-07-21 05:17:32,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307993249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:32,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:32,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:17:32,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319902148] [2022-07-21 05:17:32,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:17:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:32,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:17:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:17:32,434 INFO L87 Difference]: Start difference. First operand has 228 states, 201 states have (on average 1.6318407960199004) internal successors, (328), 203 states have internal predecessors, (328), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:33,082 INFO L93 Difference]: Finished difference Result 521 states and 845 transitions. [2022-07-21 05:17:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:17:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:33,093 INFO L225 Difference]: With dead ends: 521 [2022-07-21 05:17:33,093 INFO L226 Difference]: Without dead ends: 297 [2022-07-21 05:17:33,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:17:33,099 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 568 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:33,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 613 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:17:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-21 05:17:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 223. [2022-07-21 05:17:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.5279187817258884) internal successors, (301), 198 states have internal predecessors, (301), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 05:17:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 339 transitions. [2022-07-21 05:17:33,158 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 339 transitions. Word has length 115 [2022-07-21 05:17:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:33,158 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 339 transitions. [2022-07-21 05:17:33,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:33,159 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 339 transitions. [2022-07-21 05:17:33,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:33,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:33,162 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] [2022-07-21 05:17:33,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:17:33,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:33,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:33,163 INFO L85 PathProgramCache]: Analyzing trace with hash -730373757, now seen corresponding path program 1 times [2022-07-21 05:17:33,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:33,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883503507] [2022-07-21 05:17:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:33,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:33,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883503507] [2022-07-21 05:17:33,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883503507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:33,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:33,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:17:33,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697186659] [2022-07-21 05:17:33,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:33,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:17:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:33,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:17:33,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:17:33,323 INFO L87 Difference]: Start difference. First operand 223 states and 339 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:34,436 INFO L93 Difference]: Finished difference Result 794 states and 1245 transitions. [2022-07-21 05:17:34,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:17:34,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:34,440 INFO L225 Difference]: With dead ends: 794 [2022-07-21 05:17:34,440 INFO L226 Difference]: Without dead ends: 585 [2022-07-21 05:17:34,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:17:34,444 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 837 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:34,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 953 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:17:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-07-21 05:17:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 437. [2022-07-21 05:17:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 390 states have (on average 1.5384615384615385) internal successors, (600), 392 states have internal predecessors, (600), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-21 05:17:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 669 transitions. [2022-07-21 05:17:34,518 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 669 transitions. Word has length 115 [2022-07-21 05:17:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:34,520 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 669 transitions. [2022-07-21 05:17:34,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 669 transitions. [2022-07-21 05:17:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:34,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:34,529 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] [2022-07-21 05:17:34,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:17:34,529 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1581446434, now seen corresponding path program 1 times [2022-07-21 05:17:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:34,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837587593] [2022-07-21 05:17:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:34,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:34,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837587593] [2022-07-21 05:17:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837587593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:34,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851850187] [2022-07-21 05:17:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:34,640 INFO L87 Difference]: Start difference. First operand 437 states and 669 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:35,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:35,264 INFO L93 Difference]: Finished difference Result 1016 states and 1582 transitions. [2022-07-21 05:17:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:17:35,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:35,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:35,268 INFO L225 Difference]: With dead ends: 1016 [2022-07-21 05:17:35,268 INFO L226 Difference]: Without dead ends: 593 [2022-07-21 05:17:35,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:17:35,270 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 702 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:35,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 777 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:17:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-21 05:17:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 437. [2022-07-21 05:17:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 390 states have (on average 1.5333333333333334) internal successors, (598), 392 states have internal predecessors, (598), 33 states have call successors, (33), 12 states have call predecessors, (33), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-21 05:17:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 667 transitions. [2022-07-21 05:17:35,291 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 667 transitions. Word has length 115 [2022-07-21 05:17:35,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:35,291 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 667 transitions. [2022-07-21 05:17:35,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:35,291 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 667 transitions. [2022-07-21 05:17:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:35,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:35,292 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] [2022-07-21 05:17:35,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:17:35,293 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:35,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash -324956832, now seen corresponding path program 1 times [2022-07-21 05:17:35,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:35,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230521104] [2022-07-21 05:17:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:35,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:35,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230521104] [2022-07-21 05:17:35,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230521104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:35,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:35,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225041241] [2022-07-21 05:17:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:35,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:35,408 INFO L87 Difference]: Start difference. First operand 437 states and 667 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:36,996 INFO L93 Difference]: Finished difference Result 1393 states and 2154 transitions. [2022-07-21 05:17:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:37,001 INFO L225 Difference]: With dead ends: 1393 [2022-07-21 05:17:37,001 INFO L226 Difference]: Without dead ends: 970 [2022-07-21 05:17:37,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:37,003 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 900 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1759 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:37,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1759 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:17:37,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2022-07-21 05:17:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 637. [2022-07-21 05:17:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 569 states have (on average 1.5254833040421794) internal successors, (868), 572 states have internal predecessors, (868), 47 states have call successors, (47), 18 states have call predecessors, (47), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-21 05:17:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 967 transitions. [2022-07-21 05:17:37,031 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 967 transitions. Word has length 115 [2022-07-21 05:17:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:37,032 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 967 transitions. [2022-07-21 05:17:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 967 transitions. [2022-07-21 05:17:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:37,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:37,033 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] [2022-07-21 05:17:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:17:37,034 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:37,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1276114274, now seen corresponding path program 1 times [2022-07-21 05:17:37,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:37,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881857046] [2022-07-21 05:17:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:37,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:37,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:37,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881857046] [2022-07-21 05:17:37,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881857046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:37,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:37,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:37,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301618111] [2022-07-21 05:17:37,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:37,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:37,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:37,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:37,122 INFO L87 Difference]: Start difference. First operand 637 states and 967 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:38,703 INFO L93 Difference]: Finished difference Result 2138 states and 3298 transitions. [2022-07-21 05:17:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:38,709 INFO L225 Difference]: With dead ends: 2138 [2022-07-21 05:17:38,710 INFO L226 Difference]: Without dead ends: 1515 [2022-07-21 05:17:38,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:38,727 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 894 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:38,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 1747 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:17:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-07-21 05:17:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1042. [2022-07-21 05:17:38,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1042 states, 932 states have (on average 1.5203862660944205) internal successors, (1417), 937 states have internal predecessors, (1417), 75 states have call successors, (75), 30 states have call predecessors, (75), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-21 05:17:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1580 transitions. [2022-07-21 05:17:38,795 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1580 transitions. Word has length 115 [2022-07-21 05:17:38,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:38,796 INFO L495 AbstractCegarLoop]: Abstraction has 1042 states and 1580 transitions. [2022-07-21 05:17:38,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1580 transitions. [2022-07-21 05:17:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:38,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:38,798 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] [2022-07-21 05:17:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:17:38,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1667467804, now seen corresponding path program 1 times [2022-07-21 05:17:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:38,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850902178] [2022-07-21 05:17:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:38,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:38,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850902178] [2022-07-21 05:17:38,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850902178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:38,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:38,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:38,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859093306] [2022-07-21 05:17:38,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:38,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:38,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:38,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:38,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:38,877 INFO L87 Difference]: Start difference. First operand 1042 states and 1580 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:40,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:40,446 INFO L93 Difference]: Finished difference Result 3587 states and 5515 transitions. [2022-07-21 05:17:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:40,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:40,456 INFO L225 Difference]: With dead ends: 3587 [2022-07-21 05:17:40,456 INFO L226 Difference]: Without dead ends: 2559 [2022-07-21 05:17:40,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:40,459 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 893 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:40,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1742 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 05:17:40,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2559 states. [2022-07-21 05:17:40,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2559 to 1853. [2022-07-21 05:17:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1659 states have (on average 1.5159734779987946) internal successors, (2515), 1668 states have internal predecessors, (2515), 131 states have call successors, (131), 54 states have call predecessors, (131), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-21 05:17:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2812 transitions. [2022-07-21 05:17:40,540 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2812 transitions. Word has length 115 [2022-07-21 05:17:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:40,540 INFO L495 AbstractCegarLoop]: Abstraction has 1853 states and 2812 transitions. [2022-07-21 05:17:40,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2812 transitions. [2022-07-21 05:17:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:40,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:40,543 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] [2022-07-21 05:17:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:17:40,544 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1008524578, now seen corresponding path program 1 times [2022-07-21 05:17:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:40,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153169901] [2022-07-21 05:17:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:40,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:40,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153169901] [2022-07-21 05:17:40,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153169901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:40,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:40,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:40,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170248694] [2022-07-21 05:17:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:40,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:40,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:40,631 INFO L87 Difference]: Start difference. First operand 1853 states and 2812 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:42,314 INFO L93 Difference]: Finished difference Result 6484 states and 9965 transitions. [2022-07-21 05:17:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:17:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:42,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:42,330 INFO L225 Difference]: With dead ends: 6484 [2022-07-21 05:17:42,330 INFO L226 Difference]: Without dead ends: 4645 [2022-07-21 05:17:42,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:17:42,335 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 892 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:42,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 1737 Invalid, 2135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:17:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4645 states. [2022-07-21 05:17:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4645 to 3482. [2022-07-21 05:17:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3120 states have (on average 1.5131410256410256) internal successors, (4721), 3137 states have internal predecessors, (4721), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-21 05:17:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5304 transitions. [2022-07-21 05:17:42,496 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5304 transitions. Word has length 115 [2022-07-21 05:17:42,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:42,496 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 5304 transitions. [2022-07-21 05:17:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:42,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5304 transitions. [2022-07-21 05:17:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:42,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:42,501 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] [2022-07-21 05:17:42,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:17:42,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:42,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash 125015588, now seen corresponding path program 1 times [2022-07-21 05:17:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412035099] [2022-07-21 05:17:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:42,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412035099] [2022-07-21 05:17:42,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412035099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:42,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:42,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:42,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688777190] [2022-07-21 05:17:42,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:42,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:42,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:42,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:42,593 INFO L87 Difference]: Start difference. First operand 3482 states and 5304 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:43,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:43,324 INFO L93 Difference]: Finished difference Result 8041 states and 12423 transitions. [2022-07-21 05:17:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:17:43,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:43,342 INFO L225 Difference]: With dead ends: 8041 [2022-07-21 05:17:43,342 INFO L226 Difference]: Without dead ends: 4573 [2022-07-21 05:17:43,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:17:43,352 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 702 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:43,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 753 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:17:43,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4573 states. [2022-07-21 05:17:43,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4573 to 3482. [2022-07-21 05:17:43,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 3120 states have (on average 1.5076923076923077) internal successors, (4704), 3137 states have internal predecessors, (4704), 243 states have call successors, (243), 102 states have call predecessors, (243), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-21 05:17:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 5287 transitions. [2022-07-21 05:17:43,519 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 5287 transitions. Word has length 115 [2022-07-21 05:17:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 5287 transitions. [2022-07-21 05:17:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 5287 transitions. [2022-07-21 05:17:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:43,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:43,524 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] [2022-07-21 05:17:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:17:43,524 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:43,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 96515298, now seen corresponding path program 1 times [2022-07-21 05:17:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:43,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064665981] [2022-07-21 05:17:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:43,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064665981] [2022-07-21 05:17:43,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064665981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:43,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:43,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310703967] [2022-07-21 05:17:43,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:43,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:43,636 INFO L87 Difference]: Start difference. First operand 3482 states and 5287 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:45,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:45,561 INFO L93 Difference]: Finished difference Result 13349 states and 20441 transitions. [2022-07-21 05:17:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:17:45,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:45,600 INFO L225 Difference]: With dead ends: 13349 [2022-07-21 05:17:45,601 INFO L226 Difference]: Without dead ends: 9881 [2022-07-21 05:17:45,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:17:45,612 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 1058 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:45,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 1640 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 05:17:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2022-07-21 05:17:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 6724. [2022-07-21 05:17:45,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6724 states, 6042 states have (on average 1.5074478649453824) internal successors, (9108), 6075 states have internal predecessors, (9108), 451 states have call successors, (451), 198 states have call predecessors, (451), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-21 05:17:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6724 states to 6724 states and 10285 transitions. [2022-07-21 05:17:45,944 INFO L78 Accepts]: Start accepts. Automaton has 6724 states and 10285 transitions. Word has length 115 [2022-07-21 05:17:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:45,944 INFO L495 AbstractCegarLoop]: Abstraction has 6724 states and 10285 transitions. [2022-07-21 05:17:45,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6724 states and 10285 transitions. [2022-07-21 05:17:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:45,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:45,952 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] [2022-07-21 05:17:45,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:17:45,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:45,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:45,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1844066716, now seen corresponding path program 1 times [2022-07-21 05:17:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:45,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477558361] [2022-07-21 05:17:45,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:45,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:46,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:46,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477558361] [2022-07-21 05:17:46,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477558361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:46,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:46,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:46,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456871493] [2022-07-21 05:17:46,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:46,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:46,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:46,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:46,054 INFO L87 Difference]: Start difference. First operand 6724 states and 10285 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:48,401 INFO L93 Difference]: Finished difference Result 25437 states and 39201 transitions. [2022-07-21 05:17:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:17:48,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:48,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:48,459 INFO L225 Difference]: With dead ends: 25437 [2022-07-21 05:17:48,459 INFO L226 Difference]: Without dead ends: 18727 [2022-07-21 05:17:48,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:17:48,483 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1018 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:48,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1651 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 05:17:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18727 states. [2022-07-21 05:17:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18727 to 13189. [2022-07-21 05:17:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13189 states, 11883 states have (on average 1.508541614070521) internal successors, (17926), 11948 states have internal predecessors, (17926), 851 states have call successors, (851), 390 states have call predecessors, (851), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-21 05:17:49,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13189 states to 13189 states and 20421 transitions. [2022-07-21 05:17:49,180 INFO L78 Accepts]: Start accepts. Automaton has 13189 states and 20421 transitions. Word has length 115 [2022-07-21 05:17:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:49,180 INFO L495 AbstractCegarLoop]: Abstraction has 13189 states and 20421 transitions. [2022-07-21 05:17:49,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13189 states and 20421 transitions. [2022-07-21 05:17:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:49,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:49,196 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] [2022-07-21 05:17:49,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:17:49,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash 32996514, now seen corresponding path program 1 times [2022-07-21 05:17:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:49,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749947381] [2022-07-21 05:17:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:49,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749947381] [2022-07-21 05:17:49,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749947381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:49,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:49,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776819658] [2022-07-21 05:17:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:49,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:49,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:49,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:49,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:49,286 INFO L87 Difference]: Start difference. First operand 13189 states and 20421 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:52,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:52,651 INFO L93 Difference]: Finished difference Result 49020 states and 76423 transitions. [2022-07-21 05:17:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:17:52,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:52,814 INFO L225 Difference]: With dead ends: 49020 [2022-07-21 05:17:52,814 INFO L226 Difference]: Without dead ends: 35845 [2022-07-21 05:17:52,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:17:52,849 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 908 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:52,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 1704 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:17:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35845 states. [2022-07-21 05:17:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35845 to 26086. [2022-07-21 05:17:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26086 states, 23564 states have (on average 1.5104396537090476) internal successors, (35592), 23693 states have internal predecessors, (35592), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-21 05:17:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 41145 transitions. [2022-07-21 05:17:54,298 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 41145 transitions. Word has length 115 [2022-07-21 05:17:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:54,298 INFO L495 AbstractCegarLoop]: Abstraction has 26086 states and 41145 transitions. [2022-07-21 05:17:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 41145 transitions. [2022-07-21 05:17:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:54,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:54,327 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] [2022-07-21 05:17:54,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:17:54,328 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:54,328 INFO L85 PathProgramCache]: Analyzing trace with hash -737737052, now seen corresponding path program 1 times [2022-07-21 05:17:54,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:54,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061991669] [2022-07-21 05:17:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:54,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:54,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061991669] [2022-07-21 05:17:54,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061991669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:54,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:54,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:54,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286840651] [2022-07-21 05:17:54,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:54,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:54,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:54,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:54,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:54,402 INFO L87 Difference]: Start difference. First operand 26086 states and 41145 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:57,019 INFO L93 Difference]: Finished difference Result 59047 states and 94798 transitions. [2022-07-21 05:17:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:17:57,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:17:57,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:57,246 INFO L225 Difference]: With dead ends: 59047 [2022-07-21 05:17:57,259 INFO L226 Difference]: Without dead ends: 32975 [2022-07-21 05:17:57,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:17:57,355 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 610 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 854 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:17:57,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32975 states. [2022-07-21 05:17:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32975 to 26086. [2022-07-21 05:17:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26086 states, 23564 states have (on average 1.504965201154303) internal successors, (35463), 23693 states have internal predecessors, (35463), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-21 05:17:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26086 states to 26086 states and 41016 transitions. [2022-07-21 05:17:58,804 INFO L78 Accepts]: Start accepts. Automaton has 26086 states and 41016 transitions. Word has length 115 [2022-07-21 05:17:58,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:17:58,804 INFO L495 AbstractCegarLoop]: Abstraction has 26086 states and 41016 transitions. [2022-07-21 05:17:58,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26086 states and 41016 transitions. [2022-07-21 05:17:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:17:58,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:17:58,828 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] [2022-07-21 05:17:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:17:58,828 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:17:58,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:17:58,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1324013274, now seen corresponding path program 1 times [2022-07-21 05:17:58,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:17:58,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427180610] [2022-07-21 05:17:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:17:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:17:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:17:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:17:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:17:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:17:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:17:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:17:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:17:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:17:58,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427180610] [2022-07-21 05:17:58,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427180610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:17:58,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:17:58,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:17:58,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621158715] [2022-07-21 05:17:58,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:17:58,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:17:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:17:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:17:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:17:58,916 INFO L87 Difference]: Start difference. First operand 26086 states and 41016 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:02,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:02,256 INFO L93 Difference]: Finished difference Result 58011 states and 91569 transitions. [2022-07-21 05:18:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:18:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:18:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:02,358 INFO L225 Difference]: With dead ends: 58011 [2022-07-21 05:18:02,358 INFO L226 Difference]: Without dead ends: 31940 [2022-07-21 05:18:02,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 05:18:02,413 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 636 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:02,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1097 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:18:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31940 states. [2022-07-21 05:18:03,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31940 to 26089. [2022-07-21 05:18:03,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26089 states, 23567 states have (on average 1.499469597318284) internal successors, (35338), 23696 states have internal predecessors, (35338), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-21 05:18:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26089 states to 26089 states and 40891 transitions. [2022-07-21 05:18:03,988 INFO L78 Accepts]: Start accepts. Automaton has 26089 states and 40891 transitions. Word has length 115 [2022-07-21 05:18:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:03,989 INFO L495 AbstractCegarLoop]: Abstraction has 26089 states and 40891 transitions. [2022-07-21 05:18:03,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26089 states and 40891 transitions. [2022-07-21 05:18:04,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:18:04,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:04,023 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] [2022-07-21 05:18:04,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:18:04,024 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash -484979612, now seen corresponding path program 1 times [2022-07-21 05:18:04,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196313703] [2022-07-21 05:18:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:04,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:04,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:18:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:18:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:18:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:04,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196313703] [2022-07-21 05:18:04,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196313703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:04,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:04,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320050344] [2022-07-21 05:18:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:04,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:04,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:04,122 INFO L87 Difference]: Start difference. First operand 26089 states and 40891 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:09,682 INFO L93 Difference]: Finished difference Result 70813 states and 109620 transitions. [2022-07-21 05:18:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:18:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:18:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:09,818 INFO L225 Difference]: With dead ends: 70813 [2022-07-21 05:18:09,818 INFO L226 Difference]: Without dead ends: 44739 [2022-07-21 05:18:09,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:18:09,868 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 636 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:09,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1086 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:18:09,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44739 states. [2022-07-21 05:18:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44739 to 26476. [2022-07-21 05:18:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26476 states, 23954 states have (on average 1.491400183685397) internal successors, (35725), 24083 states have internal predecessors, (35725), 1619 states have call successors, (1619), 774 states have call predecessors, (1619), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-21 05:18:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26476 states to 26476 states and 41278 transitions. [2022-07-21 05:18:12,096 INFO L78 Accepts]: Start accepts. Automaton has 26476 states and 41278 transitions. Word has length 115 [2022-07-21 05:18:12,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:12,096 INFO L495 AbstractCegarLoop]: Abstraction has 26476 states and 41278 transitions. [2022-07-21 05:18:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:12,097 INFO L276 IsEmpty]: Start isEmpty. Operand 26476 states and 41278 transitions. [2022-07-21 05:18:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:18:12,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:12,124 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] [2022-07-21 05:18:12,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:18:12,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash -408078814, now seen corresponding path program 1 times [2022-07-21 05:18:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:12,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248064030] [2022-07-21 05:18:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:18:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:18:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:18:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248064030] [2022-07-21 05:18:12,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248064030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:12,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:12,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:12,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101329328] [2022-07-21 05:18:12,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:12,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:12,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:12,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:12,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:12,271 INFO L87 Difference]: Start difference. First operand 26476 states and 41278 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:18:23,688 INFO L93 Difference]: Finished difference Result 152833 states and 243399 transitions. [2022-07-21 05:18:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 05:18:23,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 115 [2022-07-21 05:18:23,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:18:24,276 INFO L225 Difference]: With dead ends: 152833 [2022-07-21 05:18:24,277 INFO L226 Difference]: Without dead ends: 126372 [2022-07-21 05:18:24,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:18:24,408 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 2110 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:18:24,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 1505 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:18:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126372 states. [2022-07-21 05:18:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126372 to 101836. [2022-07-21 05:18:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101836 states, 92022 states have (on average 1.4945773836691225) internal successors, (137534), 92793 states have internal predecessors, (137534), 6205 states have call successors, (6205), 3096 states have call predecessors, (6205), 3608 states have return successors, (17284), 6074 states have call predecessors, (17284), 6205 states have call successors, (17284) [2022-07-21 05:18:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101836 states to 101836 states and 161023 transitions. [2022-07-21 05:18:32,744 INFO L78 Accepts]: Start accepts. Automaton has 101836 states and 161023 transitions. Word has length 115 [2022-07-21 05:18:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:18:32,744 INFO L495 AbstractCegarLoop]: Abstraction has 101836 states and 161023 transitions. [2022-07-21 05:18:32,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:18:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 101836 states and 161023 transitions. [2022-07-21 05:18:32,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-21 05:18:32,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:18:32,764 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] [2022-07-21 05:18:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:18:32,765 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:18:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:18:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 498677633, now seen corresponding path program 1 times [2022-07-21 05:18:32,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:18:32,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928069520] [2022-07-21 05:18:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:18:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:18:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:18:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:18:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 05:18:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 05:18:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 05:18:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:18:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:18:32,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:18:32,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928069520] [2022-07-21 05:18:32,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928069520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:18:32,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:18:32,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:18:32,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084311944] [2022-07-21 05:18:32,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:18:32,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:18:32,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:18:32,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:18:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:18:32,841 INFO L87 Difference]: Start difference. First operand 101836 states and 161023 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 5 states have internal predecessors, (105), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)