./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.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/combinations/Problem05_label43+token_ring.02.cil-1.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 c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:54:15,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:54:15,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:54:15,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:54:15,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:54:15,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:54:15,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:54:15,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:54:15,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:54:15,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:54:15,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:54:15,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:54:15,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:54:15,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:54:15,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:54:15,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:54:15,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:54:15,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:54:15,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:54:15,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:54:15,967 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:54:15,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:54:15,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:54:15,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:54:15,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:54:15,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:54:16,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:54:16,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:54:16,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:54:16,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:54:16,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:54:16,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:54:16,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:54:16,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:54:16,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:54:16,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:54:16,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:54:16,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:54:16,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:54:16,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:54:16,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:54:16,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:54:16,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:54:16,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:54:16,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:54:16,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:54:16,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:54:16,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:54:16,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:54:16,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:54:16,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:54:16,041 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:54:16,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:54:16,042 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:54:16,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:54:16,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:54:16,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:54:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:54:16,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:54:16,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:54:16,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:54:16,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:54:16,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:54:16,046 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:54:16,046 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:54:16,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:54:16,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c77adeba6cdfcefcbb31bf939774adeb705a38d7ca9279d598a2176e2713682c [2022-07-21 06:54:16,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:54:16,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:54:16,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:54:16,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:54:16,332 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:54:16,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-07-21 06:54:16,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3a34c70/be4665671f2f44be964625bb135f5320/FLAG2e232857f [2022-07-21 06:54:17,121 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:54:17,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.02.cil-1.c [2022-07-21 06:54:17,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3a34c70/be4665671f2f44be964625bb135f5320/FLAG2e232857f [2022-07-21 06:54:17,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d3a34c70/be4665671f2f44be964625bb135f5320 [2022-07-21 06:54:17,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:54:17,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:54:17,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:54:17,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:54:17,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:54:17,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:54:17" (1/1) ... [2022-07-21 06:54:17,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9027e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:17, skipping insertion in model container [2022-07-21 06:54:17,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:54:17" (1/1) ... [2022-07-21 06:54:17,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:54:17,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:54:18,957 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/combinations/Problem05_label43+token_ring.02.cil-1.c[381679,381692] [2022-07-21 06:54:18,983 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/combinations/Problem05_label43+token_ring.02.cil-1.c[383339,383352] [2022-07-21 06:54:19,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:54:19,088 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:54:19,724 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/combinations/Problem05_label43+token_ring.02.cil-1.c[381679,381692] [2022-07-21 06:54:19,727 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/combinations/Problem05_label43+token_ring.02.cil-1.c[383339,383352] [2022-07-21 06:54:19,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:54:19,784 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:54:19,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19 WrapperNode [2022-07-21 06:54:19,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:54:19,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:54:19,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:54:19,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:54:19,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:19,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,210 INFO L137 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-07-21 06:54:20,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:54:20,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:54:20,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:54:20,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:54:20,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:54:20,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:54:20,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:54:20,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:54:20,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (1/1) ... [2022-07-21 06:54:20,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:54:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:20,601 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 06:54:20,614 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 06:54:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:54:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 06:54:20,670 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 06:54:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 06:54:20,670 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 06:54:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 06:54:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 06:54:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 06:54:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 06:54:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 06:54:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 06:54:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:54:20,671 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 06:54:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 06:54:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:54:20,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:54:20,776 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:54:20,778 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:54:25,538 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:54:25,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:54:25,558 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-21 06:54:25,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:54:25 BoogieIcfgContainer [2022-07-21 06:54:25,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:54:25,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:54:25,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:54:25,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:54:25,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:54:17" (1/3) ... [2022-07-21 06:54:25,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a12f6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:54:25, skipping insertion in model container [2022-07-21 06:54:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:54:19" (2/3) ... [2022-07-21 06:54:25,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a12f6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:54:25, skipping insertion in model container [2022-07-21 06:54:25,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:54:25" (3/3) ... [2022-07-21 06:54:25,567 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.02.cil-1.c [2022-07-21 06:54:25,577 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:54:25,577 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 06:54:25,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:54:25,671 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@71e7a40f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c48f8a8 [2022-07-21 06:54:25,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 06:54:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-21 06:54:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:25,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:25,711 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] [2022-07-21 06:54:25,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-07-21 06:54:25,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:25,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347610741] [2022-07-21 06:54:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:25,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:25,998 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 06:54:25,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:25,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347610741] [2022-07-21 06:54:26,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347610741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:26,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:26,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:54:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866258029] [2022-07-21 06:54:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:26,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:54:26,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:54:26,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:54:26,026 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 06:54:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:26,715 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-07-21 06:54:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:54:26,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:26,738 INFO L225 Difference]: With dead ends: 4802 [2022-07-21 06:54:26,739 INFO L226 Difference]: Without dead ends: 2427 [2022-07-21 06:54:26,747 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 06:54:26,753 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:26,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 06:54:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-07-21 06:54:26,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-07-21 06:54:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-21 06:54:26,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-07-21 06:54:26,862 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-07-21 06:54:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:26,862 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-07-21 06:54:26,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 06:54:26,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-07-21 06:54:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:26,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:26,865 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] [2022-07-21 06:54:26,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:54:26,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-07-21 06:54:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:26,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641823198] [2022-07-21 06:54:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:26,942 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 06:54:26,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:26,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641823198] [2022-07-21 06:54:26,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641823198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:26,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:26,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:54:26,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567890559] [2022-07-21 06:54:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:54:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:54:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:54:26,945 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:27,731 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-07-21 06:54:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:54:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:27,745 INFO L225 Difference]: With dead ends: 2807 [2022-07-21 06:54:27,745 INFO L226 Difference]: Without dead ends: 2574 [2022-07-21 06:54:27,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:54:27,750 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:27,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:54:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-07-21 06:54:27,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-07-21 06:54:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-21 06:54:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-07-21 06:54:27,937 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-07-21 06:54:27,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:27,937 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-07-21 06:54:27,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:27,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-07-21 06:54:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:27,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:27,943 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] [2022-07-21 06:54:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:54:27,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-07-21 06:54:27,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:27,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187020773] [2022-07-21 06:54:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:27,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,056 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 06:54:28,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:28,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187020773] [2022-07-21 06:54:28,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187020773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:28,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:28,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:54:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263272273] [2022-07-21 06:54:28,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:28,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:54:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:54:28,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:54:28,058 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:28,759 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-07-21 06:54:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:54:28,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:28,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:28,770 INFO L225 Difference]: With dead ends: 3193 [2022-07-21 06:54:28,771 INFO L226 Difference]: Without dead ends: 2851 [2022-07-21 06:54:28,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:54:28,779 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:28,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:54:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-07-21 06:54:28,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-07-21 06:54:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-21 06:54:28,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-07-21 06:54:28,841 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-07-21 06:54:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:28,841 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-07-21 06:54:28,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-07-21 06:54:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:28,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:28,843 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] [2022-07-21 06:54:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:54:28,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-07-21 06:54:28,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:28,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668304010] [2022-07-21 06:54:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:28,902 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 06:54:28,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:28,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668304010] [2022-07-21 06:54:28,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668304010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:28,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:28,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:54:28,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376713583] [2022-07-21 06:54:28,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:28,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:54:28,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:54:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:54:28,905 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:29,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:29,672 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-07-21 06:54:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:54:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:29,684 INFO L225 Difference]: With dead ends: 4037 [2022-07-21 06:54:29,684 INFO L226 Difference]: Without dead ends: 3476 [2022-07-21 06:54:29,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:54:29,688 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:29,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:54:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-07-21 06:54:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-07-21 06:54:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-07-21 06:54:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-07-21 06:54:29,764 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-07-21 06:54:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-07-21 06:54:29,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-07-21 06:54:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:29,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:29,766 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] [2022-07-21 06:54:29,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:54:29,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-07-21 06:54:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829707072] [2022-07-21 06:54:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:29,827 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 06:54:29,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829707072] [2022-07-21 06:54:29,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829707072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:29,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:29,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:54:29,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574988362] [2022-07-21 06:54:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:54:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:54:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:54:29,829 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:30,550 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-07-21 06:54:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:54:30,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:30,565 INFO L225 Difference]: With dead ends: 5435 [2022-07-21 06:54:30,566 INFO L226 Difference]: Without dead ends: 4462 [2022-07-21 06:54:30,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:54:30,571 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:30,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:54:30,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-07-21 06:54:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-07-21 06:54:30,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-07-21 06:54:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-07-21 06:54:30,807 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-07-21 06:54:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:30,808 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-07-21 06:54:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 06:54:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-07-21 06:54:30,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 06:54:30,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:30,810 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] [2022-07-21 06:54:30,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:54:30,810 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:30,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:30,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-07-21 06:54:30,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:30,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126572141] [2022-07-21 06:54:30,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:30,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:30,881 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 06:54:30,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:30,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126572141] [2022-07-21 06:54:30,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126572141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:30,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:30,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:54:30,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380763765] [2022-07-21 06:54:30,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:54:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:30,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:54:30,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:54:30,883 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 06:54:31,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:31,540 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-07-21 06:54:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:54:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-21 06:54:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:31,558 INFO L225 Difference]: With dead ends: 7278 [2022-07-21 06:54:31,558 INFO L226 Difference]: Without dead ends: 5469 [2022-07-21 06:54:31,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-21 06:54:31,566 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:31,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 06:54:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-07-21 06:54:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-07-21 06:54:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-07-21 06:54:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-07-21 06:54:31,682 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-07-21 06:54:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:31,683 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-07-21 06:54:31,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 06:54:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-07-21 06:54:31,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 06:54:31,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:31,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:54:31,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:54:31,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-07-21 06:54:31,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755562837] [2022-07-21 06:54:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:31,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:54:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:54:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 06:54:31,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755562837] [2022-07-21 06:54:31,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755562837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:31,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218813846] [2022-07-21 06:54:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:31,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:31,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 06:54:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:31,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:54:31,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 06:54:31,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:31,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218813846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:31,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:31,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 06:54:31,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585338154] [2022-07-21 06:54:31,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:31,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:31,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:31,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:31,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:31,962 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:54:32,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:32,101 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-07-21 06:54:32,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:32,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-07-21 06:54:32,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:32,143 INFO L225 Difference]: With dead ends: 10239 [2022-07-21 06:54:32,144 INFO L226 Difference]: Without dead ends: 7489 [2022-07-21 06:54:32,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:32,155 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:32,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-07-21 06:54:32,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-07-21 06:54:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-07-21 06:54:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-07-21 06:54:32,500 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-07-21 06:54:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:32,501 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-07-21 06:54:32,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 06:54:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-07-21 06:54:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 06:54:32,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:32,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:54:32,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:32,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:32,736 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-07-21 06:54:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:32,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618345677] [2022-07-21 06:54:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:54:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:54:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 06:54:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:32,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618345677] [2022-07-21 06:54:32,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618345677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:32,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702318154] [2022-07-21 06:54:32,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:32,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:32,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 06:54:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:32,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:54:32,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 06:54:32,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:32,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702318154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:32,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:32,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371567398] [2022-07-21 06:54:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:32,916 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 06:54:33,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:33,208 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-07-21 06:54:33,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:33,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-21 06:54:33,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:33,248 INFO L225 Difference]: With dead ends: 17751 [2022-07-21 06:54:33,248 INFO L226 Difference]: Without dead ends: 12449 [2022-07-21 06:54:33,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:33,267 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:33,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:33,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-07-21 06:54:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-07-21 06:54:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-07-21 06:54:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-07-21 06:54:33,682 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-07-21 06:54:33,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:33,682 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-07-21 06:54:33,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 06:54:33,683 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-07-21 06:54:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 06:54:33,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:33,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:33,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 06:54:33,921 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-07-21 06:54:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373663723] [2022-07-21 06:54:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 06:54:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 06:54:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 06:54:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 06:54:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373663723] [2022-07-21 06:54:34,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373663723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118455906] [2022-07-21 06:54:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:34,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:34,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:34,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 06:54:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:34,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:54:34,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 06:54:34,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:34,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118455906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:34,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:34,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 06:54:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455461785] [2022-07-21 06:54:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:34,311 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 06:54:34,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:34,833 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-07-21 06:54:34,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:34,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-21 06:54:34,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:34,911 INFO L225 Difference]: With dead ends: 32641 [2022-07-21 06:54:34,911 INFO L226 Difference]: Without dead ends: 22329 [2022-07-21 06:54:34,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:34,947 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:35,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-07-21 06:54:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-07-21 06:54:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-07-21 06:54:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-07-21 06:54:35,731 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-07-21 06:54:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:35,732 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-07-21 06:54:35,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 06:54:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-07-21 06:54:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 06:54:35,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:35,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:35,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:35,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:35,991 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:35,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-07-21 06:54:35,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:35,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734457770] [2022-07-21 06:54:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:35,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 06:54:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 06:54:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 06:54:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 06:54:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-21 06:54:36,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734457770] [2022-07-21 06:54:36,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734457770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:36,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566156070] [2022-07-21 06:54:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:36,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:36,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:36,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:36,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 06:54:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:36,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:54:36,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 06:54:36,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:36,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566156070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:36,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:36,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938733350] [2022-07-21 06:54:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:36,385 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 06:54:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:37,004 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-07-21 06:54:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-21 06:54:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:37,090 INFO L225 Difference]: With dead ends: 44457 [2022-07-21 06:54:37,091 INFO L226 Difference]: Without dead ends: 24473 [2022-07-21 06:54:37,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:37,146 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:37,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-07-21 06:54:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-07-21 06:54:37,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-07-21 06:54:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-07-21 06:54:37,975 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-07-21 06:54:37,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:37,975 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-07-21 06:54:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 06:54:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-07-21 06:54:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 06:54:38,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:38,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:38,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:38,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:38,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:38,236 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-07-21 06:54:38,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:38,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785649754] [2022-07-21 06:54:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:38,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 06:54:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 06:54:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 06:54:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 06:54:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 06:54:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785649754] [2022-07-21 06:54:38,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785649754] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304884110] [2022-07-21 06:54:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:38,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:38,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:38,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:38,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 06:54:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 06:54:38,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 06:54:38,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:38,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304884110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:38,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:38,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961354807] [2022-07-21 06:54:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:38,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:38,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:38,463 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:39,304 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-07-21 06:54:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-07-21 06:54:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:39,391 INFO L225 Difference]: With dead ends: 41324 [2022-07-21 06:54:39,392 INFO L226 Difference]: Without dead ends: 26013 [2022-07-21 06:54:39,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:39,430 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:39,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:39,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-07-21 06:54:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-07-21 06:54:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-07-21 06:54:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-07-21 06:54:40,482 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-07-21 06:54:40,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:40,483 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-07-21 06:54:40,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-07-21 06:54:40,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:54:40,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:40,529 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 06:54:40,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-07-21 06:54:40,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:40,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186700685] [2022-07-21 06:54:40,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:40,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 06:54:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:54:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 06:54:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:54:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 06:54:40,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186700685] [2022-07-21 06:54:40,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186700685] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:40,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063140003] [2022-07-21 06:54:40,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:40,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:40,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:40,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:40,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 06:54:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:40,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 06:54:40,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 06:54:41,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:41,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063140003] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:41,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:41,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676621496] [2022-07-21 06:54:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:41,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:41,013 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:42,226 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-07-21 06:54:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-21 06:54:42,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:42,510 INFO L225 Difference]: With dead ends: 70245 [2022-07-21 06:54:42,511 INFO L226 Difference]: Without dead ends: 46511 [2022-07-21 06:54:42,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:42,551 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:42,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-07-21 06:54:44,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-07-21 06:54:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-07-21 06:54:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-07-21 06:54:44,315 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-07-21 06:54:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:44,316 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-07-21 06:54:44,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-07-21 06:54:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:54:44,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:44,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:44,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:44,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:44,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-07-21 06:54:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:44,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356408488] [2022-07-21 06:54:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:44,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 06:54:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:54:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 06:54:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:54:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 06:54:44,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:44,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356408488] [2022-07-21 06:54:44,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356408488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:44,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842637573] [2022-07-21 06:54:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:44,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:44,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:44,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:44,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 06:54:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:44,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 06:54:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 06:54:44,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:44,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842637573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:44,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:44,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:44,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196919336] [2022-07-21 06:54:44,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:44,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:44,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:44,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:44,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:44,858 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 06:54:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:46,247 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-07-21 06:54:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:46,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-07-21 06:54:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:46,353 INFO L225 Difference]: With dead ends: 75161 [2022-07-21 06:54:46,354 INFO L226 Difference]: Without dead ends: 40527 [2022-07-21 06:54:46,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:46,407 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:46,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-07-21 06:54:47,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-07-21 06:54:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-07-21 06:54:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-07-21 06:54:47,622 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-07-21 06:54:47,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:47,623 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-07-21 06:54:47,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 06:54:47,623 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-07-21 06:54:47,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:54:47,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:47,656 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:47,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:47,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:47,873 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:47,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-07-21 06:54:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:47,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096634775] [2022-07-21 06:54:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:47,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 06:54:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:54:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 06:54:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:54:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 06:54:47,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:47,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096634775] [2022-07-21 06:54:47,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096634775] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:54:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774798789] [2022-07-21 06:54:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:48,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:54:48,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:54:48,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:54:48,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 06:54:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:48,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 06:54:48,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:54:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 06:54:48,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:54:48,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774798789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:48,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:54:48,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:54:48,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482957865] [2022-07-21 06:54:48,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:48,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:54:48,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:48,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:54:48,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:48,132 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:50,173 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-07-21 06:54:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:54:50,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-21 06:54:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:50,326 INFO L225 Difference]: With dead ends: 82801 [2022-07-21 06:54:50,326 INFO L226 Difference]: Without dead ends: 55005 [2022-07-21 06:54:50,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:50,375 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:50,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:54:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states. [2022-07-21 06:54:52,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55005 to 53491. [2022-07-21 06:54:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53491 states, 45624 states have (on average 1.3054751884972822) internal successors, (59561), 46105 states have internal predecessors, (59561), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8740), 4233 states have call predecessors, (8740), 4265 states have call successors, (8740) [2022-07-21 06:54:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53491 states to 53491 states and 72566 transitions. [2022-07-21 06:54:52,556 INFO L78 Accepts]: Start accepts. Automaton has 53491 states and 72566 transitions. Word has length 160 [2022-07-21 06:54:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:52,557 INFO L495 AbstractCegarLoop]: Abstraction has 53491 states and 72566 transitions. [2022-07-21 06:54:52,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 06:54:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 53491 states and 72566 transitions. [2022-07-21 06:54:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:54:52,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:52,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:52,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 06:54:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-21 06:54:52,861 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:52,861 INFO L85 PathProgramCache]: Analyzing trace with hash -392345557, now seen corresponding path program 1 times [2022-07-21 06:54:52,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:52,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721348827] [2022-07-21 06:54:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:52,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:52,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 06:54:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:54:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 06:54:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:54:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-21 06:54:52,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:52,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721348827] [2022-07-21 06:54:52,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721348827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:52,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:52,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:54:52,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252396077] [2022-07-21 06:54:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:52,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:54:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:52,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:54:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:54:52,909 INFO L87 Difference]: Start difference. First operand 53491 states and 72566 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 06:54:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:55,316 INFO L93 Difference]: Finished difference Result 102539 states and 136687 transitions. [2022-07-21 06:54:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 06:54:55,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-21 06:54:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:55,494 INFO L225 Difference]: With dead ends: 102539 [2022-07-21 06:54:55,494 INFO L226 Difference]: Without dead ends: 51193 [2022-07-21 06:54:55,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:54:55,571 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 282 mSDsluCounter, 12001 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16137 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 06:54:55,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16137 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 06:54:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51193 states. [2022-07-21 06:54:57,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51193 to 48475. [2022-07-21 06:54:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48475 states, 41692 states have (on average 1.3054542837954524) internal successors, (54427), 42585 states have internal predecessors, (54427), 3253 states have call successors, (3253), 2472 states have call predecessors, (3253), 3528 states have return successors, (7133), 3449 states have call predecessors, (7133), 3253 states have call successors, (7133) [2022-07-21 06:54:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48475 states to 48475 states and 64813 transitions. [2022-07-21 06:54:57,888 INFO L78 Accepts]: Start accepts. Automaton has 48475 states and 64813 transitions. Word has length 160 [2022-07-21 06:54:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:54:57,889 INFO L495 AbstractCegarLoop]: Abstraction has 48475 states and 64813 transitions. [2022-07-21 06:54:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 06:54:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 48475 states and 64813 transitions. [2022-07-21 06:54:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 06:54:57,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:54:57,958 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:54:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 06:54:57,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:54:57,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:54:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -809968940, now seen corresponding path program 1 times [2022-07-21 06:54:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:54:57,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596268705] [2022-07-21 06:54:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:54:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:54:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:54:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:54:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:54:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:54:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:54:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 06:54:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 06:54:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 06:54:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:54:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 06:54:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:54:58,013 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 06:54:58,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:54:58,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596268705] [2022-07-21 06:54:58,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596268705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:54:58,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:54:58,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:54:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461565847] [2022-07-21 06:54:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:54:58,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:54:58,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:54:58,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:54:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:54:58,016 INFO L87 Difference]: Start difference. First operand 48475 states and 64813 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 06:54:59,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:54:59,861 INFO L93 Difference]: Finished difference Result 86015 states and 113686 transitions. [2022-07-21 06:54:59,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 06:54:59,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-21 06:54:59,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:54:59,978 INFO L225 Difference]: With dead ends: 86015 [2022-07-21 06:54:59,979 INFO L226 Difference]: Without dead ends: 39677 [2022-07-21 06:55:00,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:55:00,065 INFO L413 NwaCegarLoop]: 4135 mSDtfsCounter, 282 mSDsluCounter, 12000 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 16135 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:00,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 16135 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 06:55:00,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39677 states. [2022-07-21 06:55:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39677 to 37027. [2022-07-21 06:55:01,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37027 states, 31990 states have (on average 1.3210690840887778) internal successors, (42261), 32627 states have internal predecessors, (42261), 2427 states have call successors, (2427), 1856 states have call predecessors, (2427), 2608 states have return successors, (4967), 2559 states have call predecessors, (4967), 2427 states have call successors, (4967) [2022-07-21 06:55:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37027 states to 37027 states and 49655 transitions. [2022-07-21 06:55:01,885 INFO L78 Accepts]: Start accepts. Automaton has 37027 states and 49655 transitions. Word has length 160 [2022-07-21 06:55:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:01,885 INFO L495 AbstractCegarLoop]: Abstraction has 37027 states and 49655 transitions. [2022-07-21 06:55:01,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 06:55:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 37027 states and 49655 transitions. [2022-07-21 06:55:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 06:55:01,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:01,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 06:55:01,932 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:01,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:01,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1498858591, now seen corresponding path program 1 times [2022-07-21 06:55:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710962844] [2022-07-21 06:55:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 06:55:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 06:55:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 06:55:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 06:55:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 06:55:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 06:55:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:55:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 06:55:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 06:55:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 06:55:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-21 06:55:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710962844] [2022-07-21 06:55:02,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710962844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 06:55:02,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640878561] [2022-07-21 06:55:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:02,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 06:55:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:55:02,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 06:55:02,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 06:55:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:02,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 06:55:02,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 06:55:02,143 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 06:55:02,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 06:55:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640878561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:02,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 06:55:02,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 06:55:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388851894] [2022-07-21 06:55:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:02,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 06:55:02,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 06:55:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:55:02,145 INFO L87 Difference]: Start difference. First operand 37027 states and 49655 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 06:55:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:03,517 INFO L93 Difference]: Finished difference Result 60935 states and 83299 transitions. [2022-07-21 06:55:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 06:55:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-21 06:55:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:03,622 INFO L225 Difference]: With dead ends: 60935 [2022-07-21 06:55:03,622 INFO L226 Difference]: Without dead ends: 37197 [2022-07-21 06:55:03,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:55:03,676 INFO L413 NwaCegarLoop]: 4267 mSDtfsCounter, 130 mSDsluCounter, 4115 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 8382 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:03,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 8382 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 06:55:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37197 states.