./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.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.08.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 db9df7d135a21d792e3a2ca832f85f7c7fc22de6655b2cb0ba03be5cd467b7e3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 06:55:16,740 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 06:55:16,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 06:55:16,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 06:55:16,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 06:55:16,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 06:55:16,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 06:55:16,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 06:55:16,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 06:55:16,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 06:55:16,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 06:55:16,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 06:55:16,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 06:55:16,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 06:55:16,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 06:55:16,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 06:55:16,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 06:55:16,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 06:55:16,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 06:55:16,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 06:55:16,812 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 06:55:16,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 06:55:16,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 06:55:16,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 06:55:16,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 06:55:16,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 06:55:16,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 06:55:16,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 06:55:16,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 06:55:16,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 06:55:16,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 06:55:16,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 06:55:16,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 06:55:16,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 06:55:16,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 06:55:16,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 06:55:16,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 06:55:16,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 06:55:16,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 06:55:16,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 06:55:16,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 06:55:16,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 06:55:16,832 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 06:55:16,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 06:55:16,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 06:55:16,857 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 06:55:16,857 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 06:55:16,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 06:55:16,858 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 06:55:16,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 06:55:16,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 06:55:16,859 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 06:55:16,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 06:55:16,860 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 06:55:16,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 06:55:16,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 06:55:16,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 06:55:16,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 06:55:16,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 06:55:16,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:55:16,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 06:55:16,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 06:55:16,863 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 06:55:16,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 06:55:16,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 06:55:16,863 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db9df7d135a21d792e3a2ca832f85f7c7fc22de6655b2cb0ba03be5cd467b7e3 [2022-07-21 06:55:17,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 06:55:17,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 06:55:17,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 06:55:17,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 06:55:17,140 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 06:55:17,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-1.c [2022-07-21 06:55:17,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c6a08b1/4e4be57200934c58ae42d9312f9bc8e6/FLAG99d259dd2 [2022-07-21 06:55:17,883 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 06:55:17,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.08.cil-1.c [2022-07-21 06:55:17,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c6a08b1/4e4be57200934c58ae42d9312f9bc8e6/FLAG99d259dd2 [2022-07-21 06:55:18,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c6a08b1/4e4be57200934c58ae42d9312f9bc8e6 [2022-07-21 06:55:18,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 06:55:18,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 06:55:18,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 06:55:18,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 06:55:18,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 06:55:18,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:55:18" (1/1) ... [2022-07-21 06:55:18,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d88c89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:18, skipping insertion in model container [2022-07-21 06:55:18,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 06:55:18" (1/1) ... [2022-07-21 06:55:18,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 06:55:18,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 06:55:19,621 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.08.cil-1.c[381679,381692] [2022-07-21 06:55:19,640 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.08.cil-1.c[383339,383352] [2022-07-21 06:55:19,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:55:19,818 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 06:55:20,574 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.08.cil-1.c[381679,381692] [2022-07-21 06:55:20,577 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.08.cil-1.c[383339,383352] [2022-07-21 06:55:20,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 06:55:20,638 INFO L208 MainTranslator]: Completed translation [2022-07-21 06:55:20,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20 WrapperNode [2022-07-21 06:55:20,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 06:55:20,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 06:55:20,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 06:55:20,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 06:55:20,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:20,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,088 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2022-07-21 06:55:21,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 06:55:21,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 06:55:21,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 06:55:21,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 06:55:21,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,133 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 06:55:21,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 06:55:21,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 06:55:21,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 06:55:21,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (1/1) ... [2022-07-21 06:55:21,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 06:55:21,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 06:55:21,460 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 06:55:21,461 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 06:55:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 06:55:21,486 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 06:55:21,487 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 06:55:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 06:55:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 06:55:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 06:55:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 06:55:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 06:55:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 06:55:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 06:55:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 06:55:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 06:55:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 06:55:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 06:55:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 06:55:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 06:55:21,583 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 06:55:21,585 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 06:55:26,534 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 06:55:26,555 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 06:55:26,556 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-21 06:55:26,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:55:26 BoogieIcfgContainer [2022-07-21 06:55:26,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 06:55:26,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 06:55:26,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 06:55:26,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 06:55:26,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 06:55:18" (1/3) ... [2022-07-21 06:55:26,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd36544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:55:26, skipping insertion in model container [2022-07-21 06:55:26,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 06:55:20" (2/3) ... [2022-07-21 06:55:26,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd36544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 06:55:26, skipping insertion in model container [2022-07-21 06:55:26,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 06:55:26" (3/3) ... [2022-07-21 06:55:26,564 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.08.cil-1.c [2022-07-21 06:55:26,573 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 06:55:26,574 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 06:55:26,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 06:55:26,636 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@5faa95e9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9fe07b4 [2022-07-21 06:55:26,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 06:55:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 06:55:26,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:26,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:26,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:26,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2022-07-21 06:55:26,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:26,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707715877] [2022-07-21 06:55:26,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:26,989 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 06:55:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:26,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707715877] [2022-07-21 06:55:26,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707715877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:26,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:26,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 06:55:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031656709] [2022-07-21 06:55:26,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 06:55:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 06:55:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 06:55:27,022 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:55:27,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:27,921 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2022-07-21 06:55:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 06:55:27,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 06:55:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:27,948 INFO L225 Difference]: With dead ends: 5022 [2022-07-21 06:55:27,948 INFO L226 Difference]: Without dead ends: 2496 [2022-07-21 06:55:27,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 06:55:27,960 INFO L413 NwaCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12361 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16860 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:27,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 16860 Invalid, 563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 06:55:27,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-07-21 06:55:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2022-07-21 06:55:28,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 06:55:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2022-07-21 06:55:28,070 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2022-07-21 06:55:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:28,070 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2022-07-21 06:55:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 06:55:28,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2022-07-21 06:55:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:28,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:28,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:28,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 06:55:28,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:28,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2022-07-21 06:55:28,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:28,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925629754] [2022-07-21 06:55:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:28,234 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 06:55:28,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:28,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925629754] [2022-07-21 06:55:28,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925629754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:28,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:28,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 06:55:28,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412976754] [2022-07-21 06:55:28,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:28,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 06:55:28,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 06:55:28,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 06:55:28,236 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 06:55:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:29,915 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2022-07-21 06:55:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 06:55:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:29,926 INFO L225 Difference]: With dead ends: 3126 [2022-07-21 06:55:29,926 INFO L226 Difference]: Without dead ends: 2865 [2022-07-21 06:55:29,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:55:29,928 INFO L413 NwaCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12566 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17032 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:29,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5065 Valid, 17032 Invalid, 1531 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 06:55:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-07-21 06:55:29,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2022-07-21 06:55:29,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 06:55:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2022-07-21 06:55:29,993 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2022-07-21 06:55:29,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:29,993 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2022-07-21 06:55:29,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 06:55:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2022-07-21 06:55:29,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:29,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:29,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:29,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 06:55:29,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2022-07-21 06:55:29,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:29,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691952214] [2022-07-21 06:55:29,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:29,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:30,106 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 06:55:30,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:30,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691952214] [2022-07-21 06:55:30,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691952214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:30,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:30,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:30,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486687454] [2022-07-21 06:55:30,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:30,111 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:32,132 INFO L93 Difference]: Finished difference Result 3779 states and 6593 transitions. [2022-07-21 06:55:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:32,144 INFO L225 Difference]: With dead ends: 3779 [2022-07-21 06:55:32,144 INFO L226 Difference]: Without dead ends: 3246 [2022-07-21 06:55:32,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:32,147 INFO L413 NwaCegarLoop]: 4677 mSDtfsCounter, 5064 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 21869 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:32,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5079 Valid, 21869 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 06:55:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2022-07-21 06:55:32,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2923. [2022-07-21 06:55:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.789103690685413) internal successors, (5090), 2849 states have internal predecessors, (5090), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-21 06:55:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5207 transitions. [2022-07-21 06:55:32,225 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5207 transitions. Word has length 134 [2022-07-21 06:55:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:32,226 INFO L495 AbstractCegarLoop]: Abstraction has 2923 states and 5207 transitions. [2022-07-21 06:55:32,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:32,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5207 transitions. [2022-07-21 06:55:32,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:32,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:32,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:32,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 06:55:32,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:32,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2022-07-21 06:55:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:32,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783910034] [2022-07-21 06:55:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:32,346 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 06:55:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:32,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783910034] [2022-07-21 06:55:32,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783910034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:32,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:32,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310827013] [2022-07-21 06:55:32,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:32,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:32,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:32,349 INFO L87 Difference]: Start difference. First operand 2923 states and 5207 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:34,190 INFO L93 Difference]: Finished difference Result 4741 states and 8111 transitions. [2022-07-21 06:55:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:34,204 INFO L225 Difference]: With dead ends: 4741 [2022-07-21 06:55:34,204 INFO L226 Difference]: Without dead ends: 3955 [2022-07-21 06:55:34,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:34,216 INFO L413 NwaCegarLoop]: 4494 mSDtfsCounter, 5141 mSDsluCounter, 16738 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5156 SdHoareTripleChecker+Valid, 21232 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:34,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5156 Valid, 21232 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:55:34,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2022-07-21 06:55:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3430. [2022-07-21 06:55:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3304 states have (on average 1.7551452784503632) internal successors, (5799), 3310 states have internal predecessors, (5799), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 06:55:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 5992 transitions. [2022-07-21 06:55:34,329 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 5992 transitions. Word has length 134 [2022-07-21 06:55:34,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:34,329 INFO L495 AbstractCegarLoop]: Abstraction has 3430 states and 5992 transitions. [2022-07-21 06:55:34,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 5992 transitions. [2022-07-21 06:55:34,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:34,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:34,335 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:34,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 06:55:34,336 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2022-07-21 06:55:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:34,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271062034] [2022-07-21 06:55:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:34,437 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 06:55:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:34,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271062034] [2022-07-21 06:55:34,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271062034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:34,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:34,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974026757] [2022-07-21 06:55:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:34,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:34,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:34,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:34,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:34,440 INFO L87 Difference]: Start difference. First operand 3430 states and 5992 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:36,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:36,295 INFO L93 Difference]: Finished difference Result 6592 states and 11016 transitions. [2022-07-21 06:55:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:36,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:36,313 INFO L225 Difference]: With dead ends: 6592 [2022-07-21 06:55:36,313 INFO L226 Difference]: Without dead ends: 5299 [2022-07-21 06:55:36,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:36,320 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21857 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:36,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5074 Valid, 21857 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:55:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2022-07-21 06:55:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 4445. [2022-07-21 06:55:36,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4223 states have (on average 1.7089746625621596) internal successors, (7217), 4233 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 06:55:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 7568 transitions. [2022-07-21 06:55:36,459 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 7568 transitions. Word has length 134 [2022-07-21 06:55:36,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:36,460 INFO L495 AbstractCegarLoop]: Abstraction has 4445 states and 7568 transitions. [2022-07-21 06:55:36,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:36,461 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 7568 transitions. [2022-07-21 06:55:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:36,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:36,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:36,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 06:55:36,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:36,463 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2022-07-21 06:55:36,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:36,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069358065] [2022-07-21 06:55:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:36,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:36,650 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 06:55:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:36,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069358065] [2022-07-21 06:55:36,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069358065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:36,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:36,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38911621] [2022-07-21 06:55:36,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:36,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:36,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:36,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:36,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:36,652 INFO L87 Difference]: Start difference. First operand 4445 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:38,560 INFO L93 Difference]: Finished difference Result 10286 states and 16830 transitions. [2022-07-21 06:55:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:38,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:38,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:38,586 INFO L225 Difference]: With dead ends: 10286 [2022-07-21 06:55:38,587 INFO L226 Difference]: Without dead ends: 7978 [2022-07-21 06:55:38,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:38,596 INFO L413 NwaCegarLoop]: 4657 mSDtfsCounter, 5054 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 21849 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:38,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5069 Valid, 21849 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:55:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7978 states. [2022-07-21 06:55:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7978 to 6489. [2022-07-21 06:55:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6489 states, 6075 states have (on average 1.6587654320987655) internal successors, (10077), 6093 states have internal predecessors, (10077), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-21 06:55:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6489 states to 6489 states and 10762 transitions. [2022-07-21 06:55:38,800 INFO L78 Accepts]: Start accepts. Automaton has 6489 states and 10762 transitions. Word has length 134 [2022-07-21 06:55:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:38,801 INFO L495 AbstractCegarLoop]: Abstraction has 6489 states and 10762 transitions. [2022-07-21 06:55:38,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:38,801 INFO L276 IsEmpty]: Start isEmpty. Operand 6489 states and 10762 transitions. [2022-07-21 06:55:38,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:38,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:38,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:38,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 06:55:38,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:38,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2022-07-21 06:55:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:38,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269487872] [2022-07-21 06:55:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:38,905 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 06:55:38,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:38,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269487872] [2022-07-21 06:55:38,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269487872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:38,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:38,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773680756] [2022-07-21 06:55:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:38,907 INFO L87 Difference]: Start difference. First operand 6489 states and 10762 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:41,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:41,114 INFO L93 Difference]: Finished difference Result 17692 states and 28550 transitions. [2022-07-21 06:55:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:41,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:41,168 INFO L225 Difference]: With dead ends: 17692 [2022-07-21 06:55:41,168 INFO L226 Difference]: Without dead ends: 13340 [2022-07-21 06:55:41,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:41,189 INFO L413 NwaCegarLoop]: 4652 mSDtfsCounter, 5053 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 21844 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:41,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5068 Valid, 21844 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 06:55:41,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13340 states. [2022-07-21 06:55:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13340 to 10590. [2022-07-21 06:55:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.615093954248366) internal successors, (15815), 9826 states have internal predecessors, (15815), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 06:55:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17222 transitions. [2022-07-21 06:55:41,735 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17222 transitions. Word has length 134 [2022-07-21 06:55:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:41,735 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17222 transitions. [2022-07-21 06:55:41,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17222 transitions. [2022-07-21 06:55:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:41,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:41,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:41,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 06:55:41,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2022-07-21 06:55:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:41,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773285552] [2022-07-21 06:55:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:41,847 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 06:55:41,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:41,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773285552] [2022-07-21 06:55:41,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773285552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:41,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:41,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:41,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620485951] [2022-07-21 06:55:41,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:41,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:41,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:41,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:41,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:41,849 INFO L87 Difference]: Start difference. First operand 10590 states and 17222 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:43,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:43,376 INFO L93 Difference]: Finished difference Result 21934 states and 35495 transitions. [2022-07-21 06:55:43,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 06:55:43,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:43,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:43,409 INFO L225 Difference]: With dead ends: 21934 [2022-07-21 06:55:43,409 INFO L226 Difference]: Without dead ends: 13481 [2022-07-21 06:55:43,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 06:55:43,430 INFO L413 NwaCegarLoop]: 4398 mSDtfsCounter, 4752 mSDsluCounter, 16507 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 20905 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:43,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 20905 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 06:55:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13481 states. [2022-07-21 06:55:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13481 to 10590. [2022-07-21 06:55:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10590 states, 9792 states have (on average 1.6117238562091503) internal successors, (15782), 9826 states have internal predecessors, (15782), 566 states have call successors, (566), 198 states have call predecessors, (566), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-07-21 06:55:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10590 states to 10590 states and 17189 transitions. [2022-07-21 06:55:43,831 INFO L78 Accepts]: Start accepts. Automaton has 10590 states and 17189 transitions. Word has length 134 [2022-07-21 06:55:43,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:43,831 INFO L495 AbstractCegarLoop]: Abstraction has 10590 states and 17189 transitions. [2022-07-21 06:55:43,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10590 states and 17189 transitions. [2022-07-21 06:55:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:43,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:43,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:43,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 06:55:43,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:43,837 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2022-07-21 06:55:43,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:43,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589835990] [2022-07-21 06:55:43,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:43,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 06:55:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:43,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589835990] [2022-07-21 06:55:43,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589835990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:43,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:43,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:43,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431363104] [2022-07-21 06:55:43,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:43,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:43,916 INFO L87 Difference]: Start difference. First operand 10590 states and 17189 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:46,602 INFO L93 Difference]: Finished difference Result 32469 states and 51948 transitions. [2022-07-21 06:55:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 06:55:46,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:46,664 INFO L225 Difference]: With dead ends: 32469 [2022-07-21 06:55:46,665 INFO L226 Difference]: Without dead ends: 24016 [2022-07-21 06:55:46,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 06:55:46,694 INFO L413 NwaCegarLoop]: 4641 mSDtfsCounter, 5045 mSDsluCounter, 17192 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5060 SdHoareTripleChecker+Valid, 21833 SdHoareTripleChecker+Invalid, 2237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:46,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5060 Valid, 21833 Invalid, 2237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:55:46,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24016 states. [2022-07-21 06:55:47,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24016 to 18856. [2022-07-21 06:55:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18856 states, 17290 states have (on average 1.5792943898207057) internal successors, (27306), 17356 states have internal predecessors, (27306), 1110 states have call successors, (1110), 390 states have call predecessors, (1110), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-07-21 06:55:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18856 states to 18856 states and 30319 transitions. [2022-07-21 06:55:47,571 INFO L78 Accepts]: Start accepts. Automaton has 18856 states and 30319 transitions. Word has length 134 [2022-07-21 06:55:47,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:47,571 INFO L495 AbstractCegarLoop]: Abstraction has 18856 states and 30319 transitions. [2022-07-21 06:55:47,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:47,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18856 states and 30319 transitions. [2022-07-21 06:55:47,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:47,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:47,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:47,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 06:55:47,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2022-07-21 06:55:47,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:47,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098897802] [2022-07-21 06:55:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:47,658 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 06:55:47,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:47,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098897802] [2022-07-21 06:55:47,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098897802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:47,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:47,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391786879] [2022-07-21 06:55:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:47,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:47,660 INFO L87 Difference]: Start difference. First operand 18856 states and 30319 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:55:52,269 INFO L93 Difference]: Finished difference Result 69837 states and 111398 transitions. [2022-07-21 06:55:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:55:52,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:55:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:55:52,434 INFO L225 Difference]: With dead ends: 69837 [2022-07-21 06:55:52,434 INFO L226 Difference]: Without dead ends: 53118 [2022-07-21 06:55:52,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:55:52,484 INFO L413 NwaCegarLoop]: 4634 mSDtfsCounter, 5374 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5398 SdHoareTripleChecker+Valid, 21818 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:55:52,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5398 Valid, 21818 Invalid, 2227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:55:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-07-21 06:55:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 35257. [2022-07-21 06:55:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35257 states, 32219 states have (on average 1.5616872032030789) internal successors, (50316), 32349 states have internal predecessors, (50316), 2134 states have call successors, (2134), 774 states have call predecessors, (2134), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-07-21 06:55:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35257 states to 35257 states and 56899 transitions. [2022-07-21 06:55:54,454 INFO L78 Accepts]: Start accepts. Automaton has 35257 states and 56899 transitions. Word has length 134 [2022-07-21 06:55:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:55:54,455 INFO L495 AbstractCegarLoop]: Abstraction has 35257 states and 56899 transitions. [2022-07-21 06:55:54,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:55:54,455 INFO L276 IsEmpty]: Start isEmpty. Operand 35257 states and 56899 transitions. [2022-07-21 06:55:54,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:55:54,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:55:54,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:55:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 06:55:54,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:55:54,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:55:54,473 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2022-07-21 06:55:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:55:54,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553852799] [2022-07-21 06:55:54,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:55:54,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:55:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:55:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:55:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:55:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:55:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:55:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:55:54,555 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 06:55:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:55:54,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553852799] [2022-07-21 06:55:54,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553852799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:55:54,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:55:54,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:55:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286215285] [2022-07-21 06:55:54,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:55:54,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:55:54,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:55:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:55:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:55:54,558 INFO L87 Difference]: Start difference. First operand 35257 states and 56899 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:56:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:03,137 INFO L93 Difference]: Finished difference Result 134716 states and 217164 transitions. [2022-07-21 06:56:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:56:03,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:56:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:03,541 INFO L225 Difference]: With dead ends: 134716 [2022-07-21 06:56:03,541 INFO L226 Difference]: Without dead ends: 101596 [2022-07-21 06:56:03,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:56:03,658 INFO L413 NwaCegarLoop]: 4603 mSDtfsCounter, 5181 mSDsluCounter, 16758 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 21361 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:03,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5195 Valid, 21361 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 06:56:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101596 states. [2022-07-21 06:56:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101596 to 67354. [2022-07-21 06:56:07,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67354 states, 61436 states have (on average 1.5524122664235953) internal successors, (95374), 61694 states have internal predecessors, (95374), 4118 states have call successors, (4118), 1542 states have call predecessors, (4118), 1798 states have return successors, (10935), 4373 states have call predecessors, (10935), 4118 states have call successors, (10935) [2022-07-21 06:56:07,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67354 states to 67354 states and 110427 transitions. [2022-07-21 06:56:07,944 INFO L78 Accepts]: Start accepts. Automaton has 67354 states and 110427 transitions. Word has length 134 [2022-07-21 06:56:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 06:56:07,944 INFO L495 AbstractCegarLoop]: Abstraction has 67354 states and 110427 transitions. [2022-07-21 06:56:07,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:56:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 67354 states and 110427 transitions. [2022-07-21 06:56:07,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 06:56:07,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 06:56:07,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 06:56:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 06:56:07,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 06:56:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 06:56:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2022-07-21 06:56:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 06:56:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462230413] [2022-07-21 06:56:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 06:56:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 06:56:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 06:56:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 06:56:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 06:56:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 06:56:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 06:56:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 06:56:08,044 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 06:56:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 06:56:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462230413] [2022-07-21 06:56:08,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462230413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 06:56:08,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 06:56:08,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 06:56:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773168903] [2022-07-21 06:56:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 06:56:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 06:56:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 06:56:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 06:56:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 06:56:08,046 INFO L87 Difference]: Start difference. First operand 67354 states and 110427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 06:56:23,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 06:56:23,999 INFO L93 Difference]: Finished difference Result 260187 states and 427554 transitions. [2022-07-21 06:56:23,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 06:56:24,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-07-21 06:56:24,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 06:56:24,866 INFO L225 Difference]: With dead ends: 260187 [2022-07-21 06:56:24,866 INFO L226 Difference]: Without dead ends: 194970 [2022-07-21 06:56:25,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 06:56:25,026 INFO L413 NwaCegarLoop]: 4622 mSDtfsCounter, 5297 mSDsluCounter, 17184 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 21806 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 06:56:25,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5321 Valid, 21806 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 06:56:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194970 states.