./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_label49+token_ring.06.cil-2.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 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:21:54,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:21:54,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:21:54,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:21:55,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:21:55,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:21:55,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:21:55,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:21:55,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:21:55,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:21:55,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:21:55,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:21:55,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:21:55,031 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:21:55,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:21:55,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:21:55,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:21:55,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:21:55,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:21:55,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:21:55,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:21:55,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:21:55,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:21:55,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:21:55,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:21:55,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:21:55,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:21:55,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:21:55,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:21:55,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:21:55,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:21:55,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:21:55,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:21:55,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:21:55,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:21:55,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:21:55,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:21:55,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:21:55,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:21:55,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:21:55,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:21:55,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:21:55,111 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:21:55,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:21:55,112 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:21:55,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:21:55,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:21:55,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:21:55,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:21:55,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:21:55,114 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:21:55,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:21:55,114 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:21:55,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:21:55,116 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:21:55,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:21:55,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:21:55,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:21:55,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:21:55,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:21:55,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:21:55,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:21:55,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:21:55,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:21:55,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8099d26797381b80337a430cbea65f80d24d8bb2ab20ef5e1337fe6b0f67d890 [2021-12-21 14:21:55,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:21:55,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:21:55,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:21:55,350 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:21:55,350 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:21:55,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2021-12-21 14:21:55,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/234ae9cfe/bfbab48219e845a9b4309018943ad15c/FLAG71b559a54 [2021-12-21 14:21:56,263 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:21:56,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.06.cil-2.c [2021-12-21 14:21:56,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/234ae9cfe/bfbab48219e845a9b4309018943ad15c/FLAG71b559a54 [2021-12-21 14:21:56,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/234ae9cfe/bfbab48219e845a9b4309018943ad15c [2021-12-21 14:21:56,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:21:56,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:21:56,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:21:56,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:21:56,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:21:56,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:21:56" (1/1) ... [2021-12-21 14:21:56,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d41a269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:56, skipping insertion in model container [2021-12-21 14:21:56,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:21:56" (1/1) ... [2021-12-21 14:21:56,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:21:56,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:21:57,979 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_label49+token_ring.06.cil-2.c[380593,380606] [2021-12-21 14:21:57,996 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_label49+token_ring.06.cil-2.c[383339,383352] [2021-12-21 14:21:58,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:21:58,125 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:21:58,722 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_label49+token_ring.06.cil-2.c[380593,380606] [2021-12-21 14:21:58,732 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_label49+token_ring.06.cil-2.c[383339,383352] [2021-12-21 14:21:58,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:21:58,785 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:21:58,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58 WrapperNode [2021-12-21 14:21:58,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:21:58,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:21:58,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:21:58,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:21:58,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:58,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,182 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-21 14:21:59,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:21:59,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:21:59,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:21:59,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:21:59,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:21:59,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:21:59,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:21:59,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:21:59,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (1/1) ... [2021-12-21 14:21:59,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:21:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:21:59,586 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) [2021-12-21 14:21:59,591 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 [2021-12-21 14:21:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:21:59,609 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-21 14:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-21 14:21:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-21 14:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-21 14:21:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-21 14:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-21 14:21:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-21 14:21:59,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-21 14:21:59,610 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-21 14:21:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-21 14:21:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-21 14:21:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-21 14:21:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:21:59,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:21:59,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:21:59,733 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:21:59,734 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:22:04,492 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:22:04,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:22:04,525 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-21 14:22:04,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:22:04 BoogieIcfgContainer [2021-12-21 14:22:04,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:22:04,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:22:04,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:22:04,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:22:04,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:21:56" (1/3) ... [2021-12-21 14:22:04,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbea7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:22:04, skipping insertion in model container [2021-12-21 14:22:04,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:21:58" (2/3) ... [2021-12-21 14:22:04,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbea7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:22:04, skipping insertion in model container [2021-12-21 14:22:04,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:22:04" (3/3) ... [2021-12-21 14:22:04,551 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.06.cil-2.c [2021-12-21 14:22:04,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:22:04,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:22:04,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:22:04,627 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 14:22:04,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:22:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-21 14:22:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:04,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:04,722 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:04,723 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-21 14:22:04,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:04,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146921687] [2021-12-21 14:22:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:04,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:05,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:05,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:05,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146921687] [2021-12-21 14:22:05,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146921687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:05,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:05,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:22:05,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035857190] [2021-12-21 14:22:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:05,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:22:05,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:22:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:22:05,129 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-21 14:22:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:05,883 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-12-21 14:22:05,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 14:22:05,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:05,917 INFO L225 Difference]: With dead ends: 4896 [2021-12-21 14:22:05,917 INFO L226 Difference]: Without dead ends: 2424 [2021-12-21 14:22:05,924 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:22:05,926 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:05,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 14:22:05,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-21 14:22:06,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-12-21 14:22:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-21 14:22:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-12-21 14:22:06,068 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-12-21 14:22:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-12-21 14:22:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-21 14:22:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-12-21 14:22:06,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:06,072 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:06,072 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:06,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:22:06,072 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:06,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:06,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-12-21 14:22:06,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:06,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006173876] [2021-12-21 14:22:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:06,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:06,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:06,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:06,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006173876] [2021-12-21 14:22:06,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006173876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:06,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:06,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:06,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844285746] [2021-12-21 14:22:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:06,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:06,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:06,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:06,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:06,347 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:08,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:08,157 INFO L93 Difference]: Finished difference Result 2945 states and 5262 transitions. [2021-12-21 14:22:08,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:08,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:08,169 INFO L225 Difference]: With dead ends: 2945 [2021-12-21 14:22:08,170 INFO L226 Difference]: Without dead ends: 2732 [2021-12-21 14:22:08,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:08,176 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 4776 mSDsluCounter, 17002 mSDsCounter, 0 mSdLazyCounter, 1800 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 21542 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:08,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 21542 Invalid, 1869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1800 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:22:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2021-12-21 14:22:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 2571. [2021-12-21 14:22:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8177124702144558) internal successors, (4577), 2522 states have internal predecessors, (4577), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-21 14:22:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4658 transitions. [2021-12-21 14:22:08,245 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4658 transitions. Word has length 112 [2021-12-21 14:22:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:08,246 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4658 transitions. [2021-12-21 14:22:08,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4658 transitions. [2021-12-21 14:22:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:08,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:08,252 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:08,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:22:08,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:08,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:08,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-12-21 14:22:08,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:08,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453863721] [2021-12-21 14:22:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:08,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:08,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:08,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:08,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453863721] [2021-12-21 14:22:08,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453863721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:08,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:08,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:08,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152651482] [2021-12-21 14:22:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:08,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:08,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:08,402 INFO L87 Difference]: Start difference. First operand 2571 states and 4658 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:10,090 INFO L93 Difference]: Finished difference Result 3704 states and 6454 transitions. [2021-12-21 14:22:10,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:10,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:10,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:10,104 INFO L225 Difference]: With dead ends: 3704 [2021-12-21 14:22:10,104 INFO L226 Difference]: Without dead ends: 3270 [2021-12-21 14:22:10,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:10,108 INFO L933 BasicCegarLoop]: 4487 mSDtfsCounter, 4800 mSDsluCounter, 16923 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4813 SdHoareTripleChecker+Valid, 21410 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:10,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4813 Valid, 21410 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 14:22:10,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2021-12-21 14:22:10,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2981. [2021-12-21 14:22:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2884 states have (on average 1.782246879334258) internal successors, (5140), 2890 states have internal predecessors, (5140), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-21 14:22:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 5291 transitions. [2021-12-21 14:22:10,286 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 5291 transitions. Word has length 112 [2021-12-21 14:22:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:10,287 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 5291 transitions. [2021-12-21 14:22:10,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 5291 transitions. [2021-12-21 14:22:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:10,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:10,289 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:10,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:22:10,289 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:10,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-12-21 14:22:10,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:10,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023699421] [2021-12-21 14:22:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:10,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:10,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:10,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023699421] [2021-12-21 14:22:10,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023699421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:10,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:10,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:10,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980790729] [2021-12-21 14:22:10,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:10,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:10,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:10,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:10,427 INFO L87 Difference]: Start difference. First operand 2981 states and 5291 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:12,034 INFO L93 Difference]: Finished difference Result 5188 states and 8779 transitions. [2021-12-21 14:22:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:12,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:12,053 INFO L225 Difference]: With dead ends: 5188 [2021-12-21 14:22:12,053 INFO L226 Difference]: Without dead ends: 4344 [2021-12-21 14:22:12,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:12,059 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21525 SdHoareTripleChecker+Invalid, 1876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:12,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21525 Invalid, 1876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:22:12,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2021-12-21 14:22:12,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 3803. [2021-12-21 14:22:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3803 states, 3618 states have (on average 1.732448866777225) internal successors, (6268), 3628 states have internal predecessors, (6268), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-21 14:22:12,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3803 states to 3803 states and 6565 transitions. [2021-12-21 14:22:12,307 INFO L78 Accepts]: Start accepts. Automaton has 3803 states and 6565 transitions. Word has length 112 [2021-12-21 14:22:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:12,308 INFO L470 AbstractCegarLoop]: Abstraction has 3803 states and 6565 transitions. [2021-12-21 14:22:12,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:12,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3803 states and 6565 transitions. [2021-12-21 14:22:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:12,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:12,315 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:12,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:22:12,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-12-21 14:22:12,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:12,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813031150] [2021-12-21 14:22:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:12,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:12,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:12,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813031150] [2021-12-21 14:22:12,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813031150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:12,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:12,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:12,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733715232] [2021-12-21 14:22:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:12,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:12,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:12,452 INFO L87 Difference]: Start difference. First operand 3803 states and 6565 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:14,194 INFO L93 Difference]: Finished difference Result 8154 states and 13443 transitions. [2021-12-21 14:22:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:14,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:14,222 INFO L225 Difference]: With dead ends: 8154 [2021-12-21 14:22:14,223 INFO L226 Difference]: Without dead ends: 6488 [2021-12-21 14:22:14,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:14,231 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:14,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21522 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 14:22:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6488 states. [2021-12-21 14:22:14,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6488 to 5453. [2021-12-21 14:22:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5092 states have (on average 1.6755695208169679) internal successors, (8532), 5110 states have internal predecessors, (8532), 247 states have call successors, (247), 96 states have call predecessors, (247), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2021-12-21 14:22:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 9139 transitions. [2021-12-21 14:22:14,432 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 9139 transitions. Word has length 112 [2021-12-21 14:22:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:14,433 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 9139 transitions. [2021-12-21 14:22:14,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:14,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 9139 transitions. [2021-12-21 14:22:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:14,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:14,436 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:14,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:22:14,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-12-21 14:22:14,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:14,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720772218] [2021-12-21 14:22:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:14,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:14,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:14,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:14,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720772218] [2021-12-21 14:22:14,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720772218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:14,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:14,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:14,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530709492] [2021-12-21 14:22:14,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:14,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:14,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:14,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:14,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:14,519 INFO L87 Difference]: Start difference. First operand 5453 states and 9139 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:16,197 INFO L93 Difference]: Finished difference Result 14084 states and 22827 transitions. [2021-12-21 14:22:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:16,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:16,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:16,246 INFO L225 Difference]: With dead ends: 14084 [2021-12-21 14:22:16,246 INFO L226 Difference]: Without dead ends: 10768 [2021-12-21 14:22:16,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:16,259 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21519 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:16,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21519 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:22:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10768 states. [2021-12-21 14:22:16,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10768 to 8767. [2021-12-21 14:22:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8054 states have (on average 1.6240377452197665) internal successors, (13080), 8088 states have internal predecessors, (13080), 487 states have call successors, (487), 192 states have call predecessors, (487), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2021-12-21 14:22:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 14361 transitions. [2021-12-21 14:22:16,541 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 14361 transitions. Word has length 112 [2021-12-21 14:22:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:16,541 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 14361 transitions. [2021-12-21 14:22:16,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 14361 transitions. [2021-12-21 14:22:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:16,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:16,547 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:16,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:22:16,548 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-12-21 14:22:16,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824843157] [2021-12-21 14:22:16,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:16,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:16,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:16,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824843157] [2021-12-21 14:22:16,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824843157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:16,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:16,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:16,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364319993] [2021-12-21 14:22:16,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:16,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:16,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:16,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:16,640 INFO L87 Difference]: Start difference. First operand 8767 states and 14361 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:19,073 INFO L93 Difference]: Finished difference Result 25942 states and 41783 transitions. [2021-12-21 14:22:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 14:22:19,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:19,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:19,221 INFO L225 Difference]: With dead ends: 25942 [2021-12-21 14:22:19,222 INFO L226 Difference]: Without dead ends: 19312 [2021-12-21 14:22:19,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-21 14:22:19,291 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4775 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 21516 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:19,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4788 Valid, 21516 Invalid, 1858 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 14:22:19,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19312 states. [2021-12-21 14:22:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19312 to 15425. [2021-12-21 14:22:20,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15425 states, 14008 states have (on average 1.5862364363221018) internal successors, (22220), 14074 states have internal predecessors, (22220), 967 states have call successors, (967), 384 states have call predecessors, (967), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2021-12-21 14:22:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15425 states to 15425 states and 25011 transitions. [2021-12-21 14:22:20,336 INFO L78 Accepts]: Start accepts. Automaton has 15425 states and 25011 transitions. Word has length 112 [2021-12-21 14:22:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:20,336 INFO L470 AbstractCegarLoop]: Abstraction has 15425 states and 25011 transitions. [2021-12-21 14:22:20,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 15425 states and 25011 transitions. [2021-12-21 14:22:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:20,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:20,359 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:20,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:22:20,360 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:20,360 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-12-21 14:22:20,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:20,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814547980] [2021-12-21 14:22:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:20,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:20,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814547980] [2021-12-21 14:22:20,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814547980] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:20,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:20,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:20,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520320789] [2021-12-21 14:22:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:20,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:20,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:20,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:20,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:20,486 INFO L87 Difference]: Start difference. First operand 15425 states and 25011 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:24,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:24,569 INFO L93 Difference]: Finished difference Result 55608 states and 89253 transitions. [2021-12-21 14:22:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:22:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:24,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:24,767 INFO L225 Difference]: With dead ends: 55608 [2021-12-21 14:22:24,768 INFO L226 Difference]: Without dead ends: 42320 [2021-12-21 14:22:24,855 INFO L932 BasicCegarLoop]: 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 [2021-12-21 14:22:24,871 INFO L933 BasicCegarLoop]: 4515 mSDtfsCounter, 5030 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5050 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:24,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5050 Valid, 21501 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 14:22:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42320 states. [2021-12-21 14:22:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42320 to 28611. [2021-12-21 14:22:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28611 states, 25850 states have (on average 1.565338491295938) internal successors, (40464), 25980 states have internal predecessors, (40464), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2021-12-21 14:22:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28611 states to 28611 states and 46633 transitions. [2021-12-21 14:22:26,840 INFO L78 Accepts]: Start accepts. Automaton has 28611 states and 46633 transitions. Word has length 112 [2021-12-21 14:22:26,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:26,841 INFO L470 AbstractCegarLoop]: Abstraction has 28611 states and 46633 transitions. [2021-12-21 14:22:26,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 28611 states and 46633 transitions. [2021-12-21 14:22:26,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:26,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:26,859 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:26,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:22:26,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-12-21 14:22:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752058804] [2021-12-21 14:22:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:26,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:26,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:26,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752058804] [2021-12-21 14:22:26,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752058804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:26,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:26,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:26,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472293867] [2021-12-21 14:22:26,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:26,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:26,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:26,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:26,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:26,961 INFO L87 Difference]: Start difference. First operand 28611 states and 46633 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:32,450 INFO L93 Difference]: Finished difference Result 105085 states and 171193 transitions. [2021-12-21 14:22:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:22:32,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:32,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:33,012 INFO L225 Difference]: With dead ends: 105085 [2021-12-21 14:22:33,012 INFO L226 Difference]: Without dead ends: 78611 [2021-12-21 14:22:33,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:22:33,099 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4964 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 21493 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:33,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 21493 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:22:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78611 states. [2021-12-21 14:22:36,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78611 to 55045. [2021-12-21 14:22:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55045 states, 49660 states have (on average 1.5559403946838501) internal successors, (77268), 49918 states have internal predecessors, (77268), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2021-12-21 14:22:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55045 states to 55045 states and 91523 transitions. [2021-12-21 14:22:36,721 INFO L78 Accepts]: Start accepts. Automaton has 55045 states and 91523 transitions. Word has length 112 [2021-12-21 14:22:36,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:36,721 INFO L470 AbstractCegarLoop]: Abstraction has 55045 states and 91523 transitions. [2021-12-21 14:22:36,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:36,722 INFO L276 IsEmpty]: Start isEmpty. Operand 55045 states and 91523 transitions. [2021-12-21 14:22:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:36,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:36,799 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:36,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:22:36,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-12-21 14:22:36,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:36,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549165152] [2021-12-21 14:22:36,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:36,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:36,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:36,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549165152] [2021-12-21 14:22:36,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549165152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:36,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:36,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:36,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676185970] [2021-12-21 14:22:36,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:36,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:36,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:36,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:36,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:36,917 INFO L87 Difference]: Start difference. First operand 55045 states and 91523 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:22:46,161 INFO L93 Difference]: Finished difference Result 203331 states and 339677 transitions. [2021-12-21 14:22:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:22:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-21 14:22:46,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:22:46,818 INFO L225 Difference]: With dead ends: 203331 [2021-12-21 14:22:46,818 INFO L226 Difference]: Without dead ends: 150423 [2021-12-21 14:22:46,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-21 14:22:46,981 INFO L933 BasicCegarLoop]: 4472 mSDtfsCounter, 4937 mSDsluCounter, 16918 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 21390 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:22:46,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 21390 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 14:22:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150423 states. [2021-12-21 14:22:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150423 to 107785. [2021-12-21 14:22:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107785 states, 97280 states have (on average 1.5522615131578947) internal successors, (151004), 97794 states have internal predecessors, (151004), 6919 states have call successors, (6919), 3072 states have call predecessors, (6919), 3584 states have return successors, (27626), 7430 states have call predecessors, (27626), 6919 states have call successors, (27626) [2021-12-21 14:22:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107785 states to 107785 states and 185549 transitions. [2021-12-21 14:22:53,679 INFO L78 Accepts]: Start accepts. Automaton has 107785 states and 185549 transitions. Word has length 112 [2021-12-21 14:22:53,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:22:53,679 INFO L470 AbstractCegarLoop]: Abstraction has 107785 states and 185549 transitions. [2021-12-21 14:22:53,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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) [2021-12-21 14:22:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 107785 states and 185549 transitions. [2021-12-21 14:22:53,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-21 14:22:53,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:22:53,752 INFO L514 BasicCegarLoop]: 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] [2021-12-21 14:22:53,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:22:53,753 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:22:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:22:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-12-21 14:22:53,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:22:53,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783876841] [2021-12-21 14:22:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:22:53,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:22:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 14:22:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-21 14:22:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-21 14:22:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 14:22:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 14:22:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:22:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:22:53,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:22:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783876841] [2021-12-21 14:22:53,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783876841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:22:53,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:22:53,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 14:22:53,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857019028] [2021-12-21 14:22:53,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:22:53,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 14:22:53,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:22:53,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 14:22:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 14:22:53,846 INFO L87 Difference]: Start difference. First operand 107785 states and 185549 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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)