./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label47+token_ring.12.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 c3f3364fd5ba51681dbe9ac9cfcd9f114289823313a53e53a305bf8ae66907c7 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:00:50,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:00:50,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:00:50,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:00:50,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:00:50,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:00:50,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:00:50,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:00:50,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:00:50,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:00:50,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:00:50,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:00:50,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:00:50,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:00:50,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:00:50,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:00:50,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:00:50,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:00:50,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:00:50,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:00:50,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:00:50,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:00:50,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:00:50,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:00:50,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:00:50,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:00:50,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:00:50,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:00:50,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:00:50,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:00:50,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:00:50,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:00:50,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:00:50,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:00:50,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:00:50,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:00:50,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:00:50,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:00:50,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:00:50,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:00:50,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:00:51,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:00:51,022 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:00:51,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:00:51,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:00:51,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:00:51,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:00:51,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:00:51,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:00:51,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:00:51,024 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:00:51,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:00:51,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:00:51,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:00:51,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:00:51,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:00:51,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:00:51,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:00:51,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:00:51,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:00:51,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:00:51,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:00:51,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:00:51,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:00:51,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:00:51,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:00:51,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:00:51,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:00:51,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f3364fd5ba51681dbe9ac9cfcd9f114289823313a53e53a305bf8ae66907c7 [2021-12-28 02:00:51,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:00:51,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:00:51,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:00:51,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:00:51,289 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:00:51,290 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.12.cil-2.c [2021-12-28 02:00:51,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10a54bb40/dead7623ff05478eac92aeb81292afd9/FLAGc8013a759 [2021-12-28 02:00:52,108 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:00:52,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.12.cil-2.c [2021-12-28 02:00:52,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10a54bb40/dead7623ff05478eac92aeb81292afd9/FLAGc8013a759 [2021-12-28 02:00:52,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10a54bb40/dead7623ff05478eac92aeb81292afd9 [2021-12-28 02:00:52,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:00:52,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:00:52,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:00:52,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:00:52,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:00:52,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:00:52" (1/1) ... [2021-12-28 02:00:52,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32526257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:52, skipping insertion in model container [2021-12-28 02:00:52,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:00:52" (1/1) ... [2021-12-28 02:00:52,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:00:52,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:00:53,958 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_label47+token_ring.12.cil-2.c[377612,377625] [2021-12-28 02:00:53,976 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_label47+token_ring.12.cil-2.c[383339,383352] [2021-12-28 02:00:54,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:00:54,173 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:00:54,752 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_label47+token_ring.12.cil-2.c[377612,377625] [2021-12-28 02:00:54,757 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_label47+token_ring.12.cil-2.c[383339,383352] [2021-12-28 02:00:54,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:00:54,848 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:00:54,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54 WrapperNode [2021-12-28 02:00:54,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:00:54,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:00:54,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:00:54,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:00:54,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:54,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,240 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2021-12-28 02:00:55,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:00:55,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:00:55,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:00:55,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:00:55,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:00:55,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:00:55,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:00:55,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:00:55,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (1/1) ... [2021-12-28 02:00:55,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:00:55,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:00:55,780 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) [2021-12-28 02:00:55,827 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 [2021-12-28 02:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:00:55,897 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 02:00:55,897 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 02:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 02:00:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 02:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 02:00:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 02:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 02:00:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 02:00:55,898 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 02:00:55,898 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 02:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 02:00:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 02:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:00:55,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:00:55,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:00:56,067 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:00:56,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:01:01,039 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:01:01,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:01:01,061 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-28 02:01:01,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:01:01 BoogieIcfgContainer [2021-12-28 02:01:01,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:01:01,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:01:01,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:01:01,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:01:01,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:00:52" (1/3) ... [2021-12-28 02:01:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5cf2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:01:01, skipping insertion in model container [2021-12-28 02:01:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:00:54" (2/3) ... [2021-12-28 02:01:01,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5cf2f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:01:01, skipping insertion in model container [2021-12-28 02:01:01,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:01:01" (3/3) ... [2021-12-28 02:01:01,069 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.12.cil-2.c [2021-12-28 02:01:01,072 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:01:01,072 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:01:01,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:01:01,116 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 [2021-12-28 02:01:01,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:01:01,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-28 02:01:01,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:01,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:01,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:01,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:01,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:01,169 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2021-12-28 02:01:01,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:01,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656099296] [2021-12-28 02:01:01,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:01,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:01,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:01,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656099296] [2021-12-28 02:01:01,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656099296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:01,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:01,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:01:01,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398917737] [2021-12-28 02:01:01,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:01,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:01:01,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:01,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:01:01,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:01:01,599 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-28 02:01:02,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:02,995 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2021-12-28 02:01:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:01:02,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:02,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:03,018 INFO L225 Difference]: With dead ends: 5266 [2021-12-28 02:01:03,019 INFO L226 Difference]: Without dead ends: 2640 [2021-12-28 02:01:03,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:01:03,031 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12465 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17148 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:03,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1058 Valid, 17148 Invalid, 783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:01:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-28 02:01:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-28 02:01:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-28 02:01:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2021-12-28 02:01:03,152 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2021-12-28 02:01:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:03,152 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2021-12-28 02:01:03,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-28 02:01:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2021-12-28 02:01:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:03,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:03,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:03,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:01:03,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:03,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:03,159 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2021-12-28 02:01:03,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:03,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776344193] [2021-12-28 02:01:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:03,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:03,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:03,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776344193] [2021-12-28 02:01:03,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776344193] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:03,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:03,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 02:01:03,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215613589] [2021-12-28 02:01:03,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:03,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 02:01:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 02:01:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 02:01:03,377 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-28 02:01:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:04,633 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2021-12-28 02:01:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 02:01:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:04,646 INFO L225 Difference]: With dead ends: 3002 [2021-12-28 02:01:04,646 INFO L226 Difference]: Without dead ends: 2640 [2021-12-28 02:01:04,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 02:01:04,652 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12262 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16875 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:04,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 16875 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 02:01:04,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-12-28 02:01:04,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2021-12-28 02:01:04,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-28 02:01:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2021-12-28 02:01:04,706 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2021-12-28 02:01:04,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:04,706 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2021-12-28 02:01:04,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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) [2021-12-28 02:01:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2021-12-28 02:01:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:04,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:04,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:04,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:01:04,709 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:04,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2021-12-28 02:01:04,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018559890] [2021-12-28 02:01:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:04,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:04,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:04,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:04,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:04,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018559890] [2021-12-28 02:01:04,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018559890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:04,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:04,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 02:01:04,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634645514] [2021-12-28 02:01:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:04,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 02:01:04,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:04,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 02:01:04,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 02:01:04,862 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-28 02:01:07,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:07,328 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2021-12-28 02:01:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 02:01:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:07,343 INFO L225 Difference]: With dead ends: 3514 [2021-12-28 02:01:07,343 INFO L226 Difference]: Without dead ends: 3157 [2021-12-28 02:01:07,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:01:07,346 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12816 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17481 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:07,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5528 Valid, 17481 Invalid, 2130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-28 02:01:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2021-12-28 02:01:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2021-12-28 02:01:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-28 02:01:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2021-12-28 02:01:07,421 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2021-12-28 02:01:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:07,422 INFO L470 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2021-12-28 02:01:07,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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) [2021-12-28 02:01:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2021-12-28 02:01:07,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:07,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:07,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:07,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 02:01:07,425 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:07,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:07,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2021-12-28 02:01:07,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:07,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077338664] [2021-12-28 02:01:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:07,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:07,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:07,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077338664] [2021-12-28 02:01:07,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077338664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:07,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:07,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:07,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851098197] [2021-12-28 02:01:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:07,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:07,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:07,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:07,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:07,552 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:10,596 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2021-12-28 02:01:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:10,609 INFO L225 Difference]: With dead ends: 4427 [2021-12-28 02:01:10,609 INFO L226 Difference]: Without dead ends: 3694 [2021-12-28 02:01:10,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:10,621 INFO L933 BasicCegarLoop]: 4964 mSDtfsCounter, 5539 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22665 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:10,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22665 Invalid, 3202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 02:01:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2021-12-28 02:01:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2021-12-28 02:01:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-28 02:01:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2021-12-28 02:01:10,733 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2021-12-28 02:01:10,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:10,734 INFO L470 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2021-12-28 02:01:10,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:10,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2021-12-28 02:01:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:10,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:10,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:10,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 02:01:10,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2021-12-28 02:01:10,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:10,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557840018] [2021-12-28 02:01:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:10,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:10,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:10,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557840018] [2021-12-28 02:01:10,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557840018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:10,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:10,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:10,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505610684] [2021-12-28 02:01:10,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:10,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:10,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:10,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:10,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:10,855 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:13,974 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2021-12-28 02:01:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:13,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:13,993 INFO L225 Difference]: With dead ends: 5773 [2021-12-28 02:01:13,993 INFO L226 Difference]: Without dead ends: 4691 [2021-12-28 02:01:13,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:13,998 INFO L933 BasicCegarLoop]: 4709 mSDtfsCounter, 5648 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 21772 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:13,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5667 Valid, 21772 Invalid, 2893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 02:01:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2021-12-28 02:01:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2021-12-28 02:01:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-28 02:01:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2021-12-28 02:01:14,164 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2021-12-28 02:01:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:14,165 INFO L470 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2021-12-28 02:01:14,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:14,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2021-12-28 02:01:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:14,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:14,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:14,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 02:01:14,179 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:14,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:14,179 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2021-12-28 02:01:14,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353489242] [2021-12-28 02:01:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:14,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:14,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:14,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353489242] [2021-12-28 02:01:14,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353489242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:14,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:14,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:14,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4448666] [2021-12-28 02:01:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:14,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:14,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:14,336 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:17,454 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2021-12-28 02:01:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:17,481 INFO L225 Difference]: With dead ends: 8360 [2021-12-28 02:01:17,481 INFO L226 Difference]: Without dead ends: 6579 [2021-12-28 02:01:17,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:17,489 INFO L933 BasicCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22653 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:17,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5553 Valid, 22653 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-28 02:01:17,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2021-12-28 02:01:17,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2021-12-28 02:01:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-28 02:01:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2021-12-28 02:01:17,687 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2021-12-28 02:01:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:17,688 INFO L470 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2021-12-28 02:01:17,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2021-12-28 02:01:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:17,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:17,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:17,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 02:01:17,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:17,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2021-12-28 02:01:17,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:17,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102703790] [2021-12-28 02:01:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:17,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:17,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:17,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102703790] [2021-12-28 02:01:17,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102703790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:17,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:17,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:17,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397141627] [2021-12-28 02:01:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:17,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:17,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:17,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:17,834 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:21,104 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2021-12-28 02:01:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:21,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:21,135 INFO L225 Difference]: With dead ends: 13526 [2021-12-28 02:01:21,136 INFO L226 Difference]: Without dead ends: 10346 [2021-12-28 02:01:21,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:21,147 INFO L933 BasicCegarLoop]: 4944 mSDtfsCounter, 5529 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22645 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:21,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5548 Valid, 22645 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-28 02:01:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2021-12-28 02:01:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2021-12-28 02:01:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-28 02:01:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2021-12-28 02:01:21,505 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2021-12-28 02:01:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:21,505 INFO L470 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2021-12-28 02:01:21,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2021-12-28 02:01:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:21,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:21,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:21,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 02:01:21,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:21,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2021-12-28 02:01:21,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:21,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784634635] [2021-12-28 02:01:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:21,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:21,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784634635] [2021-12-28 02:01:21,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784634635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:21,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:21,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:21,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071185959] [2021-12-28 02:01:21,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:21,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:21,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:21,620 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:25,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:25,268 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2021-12-28 02:01:25,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:25,313 INFO L225 Difference]: With dead ends: 23876 [2021-12-28 02:01:25,314 INFO L226 Difference]: Without dead ends: 17884 [2021-12-28 02:01:25,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:25,335 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5528 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 22640 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:25,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5547 Valid, 22640 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 02:01:25,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2021-12-28 02:01:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2021-12-28 02:01:26,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-28 02:01:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2021-12-28 02:01:26,170 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2021-12-28 02:01:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:26,170 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2021-12-28 02:01:26,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2021-12-28 02:01:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:26,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:26,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:26,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 02:01:26,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2021-12-28 02:01:26,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:26,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811501417] [2021-12-28 02:01:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:26,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:26,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:26,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811501417] [2021-12-28 02:01:26,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811501417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:26,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:26,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:26,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770531481] [2021-12-28 02:01:26,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:26,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:26,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:26,309 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:28,783 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2021-12-28 02:01:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 02:01:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:28,831 INFO L225 Difference]: With dead ends: 29766 [2021-12-28 02:01:28,831 INFO L226 Difference]: Without dead ends: 18137 [2021-12-28 02:01:28,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 02:01:28,864 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5079 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21349 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:28,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5099 Valid, 21349 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 02:01:28,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2021-12-28 02:01:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2021-12-28 02:01:29,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-28 02:01:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2021-12-28 02:01:29,583 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2021-12-28 02:01:29,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:29,584 INFO L470 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2021-12-28 02:01:29,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2021-12-28 02:01:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:29,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:29,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:29,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 02:01:29,591 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2021-12-28 02:01:29,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:29,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198683044] [2021-12-28 02:01:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:29,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:29,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:29,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198683044] [2021-12-28 02:01:29,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198683044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:29,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:29,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:29,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084979563] [2021-12-28 02:01:29,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:29,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:29,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:29,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:29,702 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:34,576 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2021-12-28 02:01:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:34,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:34,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:34,660 INFO L225 Difference]: With dead ends: 44541 [2021-12-28 02:01:34,660 INFO L226 Difference]: Without dead ends: 32912 [2021-12-28 02:01:34,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:34,689 INFO L933 BasicCegarLoop]: 4928 mSDtfsCounter, 5520 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 22629 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:34,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5539 Valid, 22629 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 02:01:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2021-12-28 02:01:36,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2021-12-28 02:01:36,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-28 02:01:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2021-12-28 02:01:36,365 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2021-12-28 02:01:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:36,365 INFO L470 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2021-12-28 02:01:36,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2021-12-28 02:01:36,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:36,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:36,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:36,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 02:01:36,377 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:36,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:36,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2021-12-28 02:01:36,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:36,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937254647] [2021-12-28 02:01:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:36,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:36,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:36,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937254647] [2021-12-28 02:01:36,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937254647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:36,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:36,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:36,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302791316] [2021-12-28 02:01:36,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:36,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:36,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:36,495 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:01:43,691 INFO L93 Difference]: Finished difference Result 85941 states and 138783 transitions. [2021-12-28 02:01:43,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 02:01:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 178 [2021-12-28 02:01:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:01:43,881 INFO L225 Difference]: With dead ends: 85941 [2021-12-28 02:01:43,881 INFO L226 Difference]: Without dead ends: 62974 [2021-12-28 02:01:43,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 02:01:43,942 INFO L933 BasicCegarLoop]: 4923 mSDtfsCounter, 5519 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5538 SdHoareTripleChecker+Valid, 22624 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 02:01:43,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5538 Valid, 22624 Invalid, 3144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 02:01:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62974 states. [2021-12-28 02:01:47,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62974 to 47845. [2021-12-28 02:01:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47845 states, 44227 states have (on average 1.5727722884211002) internal successors, (69559), 44357 states have internal predecessors, (69559), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2021-12-28 02:01:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47845 states to 47845 states and 77302 transitions. [2021-12-28 02:01:47,476 INFO L78 Accepts]: Start accepts. Automaton has 47845 states and 77302 transitions. Word has length 178 [2021-12-28 02:01:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:01:47,476 INFO L470 AbstractCegarLoop]: Abstraction has 47845 states and 77302 transitions. [2021-12-28 02:01:47,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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) [2021-12-28 02:01:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 47845 states and 77302 transitions. [2021-12-28 02:01:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-28 02:01:47,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:01:47,500 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:01:47,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 02:01:47,500 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:01:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:01:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2021-12-28 02:01:47,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:01:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666742841] [2021-12-28 02:01:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:01:47,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:01:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 02:01:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-28 02:01:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 02:01:47,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 02:01:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-28 02:01:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:01:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:01:47,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:01:47,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666742841] [2021-12-28 02:01:47,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666742841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:01:47,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:01:47,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 02:01:47,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014515540] [2021-12-28 02:01:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:01:47,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 02:01:47,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:01:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 02:01:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 02:01:47,621 INFO L87 Difference]: Start difference. First operand 47845 states and 77302 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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)