./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_label42+token_ring.09.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 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:39:37,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:39:37,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:39:37,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:39:37,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:39:37,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:39:37,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:39:37,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:39:37,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:39:37,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:39:37,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:39:37,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:39:37,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:39:37,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:39:37,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:39:37,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:39:37,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:39:37,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:39:37,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:39:37,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:39:37,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:39:37,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:39:37,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:39:37,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:39:37,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:39:37,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:39:37,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:39:37,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:39:37,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:39:37,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:39:37,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:39:37,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:39:37,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:39:37,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:39:38,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:39:38,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:39:38,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:39:38,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:39:38,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:39:38,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:39:38,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:39:38,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:39:38,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:39:38,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:39:38,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:39:38,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:39:38,031 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:39:38,031 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:39:38,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:39:38,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:39:38,031 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:39:38,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:39:38,032 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:39:38,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:39:38,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:39:38,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:39:38,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:39:38,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:39:38,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:39:38,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:39:38,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:39:38,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:39:38,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:39:38,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:39:38,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:39:38,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:39:38,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 695981a417316c4c07ccb52b1c4d12f1832a3ea99763b6fdb28c03b28d3203ad [2021-12-14 15:39:38,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:39:38,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:39:38,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:39:38,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:39:38,221 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:39:38,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-14 15:39:38,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174e09834/1040d417b8a64ad7a6f16945eb898dd3/FLAG603e7e2e4 [2021-12-14 15:39:38,964 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:39:38,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.09.cil-2.c [2021-12-14 15:39:39,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174e09834/1040d417b8a64ad7a6f16945eb898dd3/FLAG603e7e2e4 [2021-12-14 15:39:39,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174e09834/1040d417b8a64ad7a6f16945eb898dd3 [2021-12-14 15:39:39,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:39:39,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:39:39,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:39:39,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:39:39,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:39:39,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:39" (1/1) ... [2021-12-14 15:39:39,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6996197d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:39, skipping insertion in model container [2021-12-14 15:39:39,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:39:39" (1/1) ... [2021-12-14 15:39:39,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:39:39,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:39:40,296 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_label42+token_ring.09.cil-2.c[378560,378573] [2021-12-14 15:39:40,314 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_label42+token_ring.09.cil-2.c[383339,383352] [2021-12-14 15:39:40,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:39:40,480 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:39:41,113 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_label42+token_ring.09.cil-2.c[378560,378573] [2021-12-14 15:39:41,118 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_label42+token_ring.09.cil-2.c[383339,383352] [2021-12-14 15:39:41,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:39:41,180 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:39:41,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41 WrapperNode [2021-12-14 15:39:41,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:39:41,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:39:41,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:39:41,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:39:41,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,620 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2021-12-14 15:39:41,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:39:41,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:39:41,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:39:41,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:39:41,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:39:41,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:39:41,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:39:41,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:39:41,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (1/1) ... [2021-12-14 15:39:41,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:39:41,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:39:41,991 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) [2021-12-14 15:39:42,021 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 [2021-12-14 15:39:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:39:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:39:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:39:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:39:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:39:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:39:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:39:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:39:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:39:42,143 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:39:42,143 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:39:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:39:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:39:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:39:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:39:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:39:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:39:42,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:39:42,234 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:39:42,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:39:46,578 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:39:46,598 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:39:46,598 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 15:39:46,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:39:46 BoogieIcfgContainer [2021-12-14 15:39:46,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:39:46,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:39:46,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:39:46,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:39:46,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:39:39" (1/3) ... [2021-12-14 15:39:46,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b9cf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:39:46, skipping insertion in model container [2021-12-14 15:39:46,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:39:41" (2/3) ... [2021-12-14 15:39:46,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b9cf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:39:46, skipping insertion in model container [2021-12-14 15:39:46,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:39:46" (3/3) ... [2021-12-14 15:39:46,606 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.09.cil-2.c [2021-12-14 15:39:46,609 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:39:46,609 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:39:46,643 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:39:46,647 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 [2021-12-14 15:39:46,647 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:39:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:39:46,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:46,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:46,715 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] [2021-12-14 15:39:46,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:46,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:46,720 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2021-12-14 15:39:46,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474002796] [2021-12-14 15:39:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:46,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:47,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:47,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:47,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474002796] [2021-12-14 15:39:47,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474002796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:47,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:47,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:39:47,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461569670] [2021-12-14 15:39:47,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:47,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:39:47,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:47,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:39:47,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:39:47,082 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:48,166 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2021-12-14 15:39:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:39:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:48,186 INFO L225 Difference]: With dead ends: 5096 [2021-12-14 15:39:48,186 INFO L226 Difference]: Without dead ends: 2539 [2021-12-14 15:39:48,192 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 [2021-12-14 15:39:48,194 INFO L933 BasicCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12422 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:48,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 16979 Invalid, 605 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:39:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2021-12-14 15:39:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2021-12-14 15:39:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 15:39:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2021-12-14 15:39:48,281 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2021-12-14 15:39:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:48,281 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2021-12-14 15:39:48,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2021-12-14 15:39:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:48,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:48,284 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] [2021-12-14 15:39:48,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:39:48,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:48,286 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2021-12-14 15:39:48,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:48,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047400126] [2021-12-14 15:39:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:48,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:48,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:48,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047400126] [2021-12-14 15:39:48,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047400126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:48,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:48,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:39:48,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157571722] [2021-12-14 15:39:48,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:48,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:39:48,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:48,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:39:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:39:48,467 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:50,306 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2021-12-14 15:39:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:39:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:50,329 INFO L225 Difference]: With dead ends: 3244 [2021-12-14 15:39:50,329 INFO L226 Difference]: Without dead ends: 2952 [2021-12-14 15:39:50,331 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 [2021-12-14 15:39:50,332 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12720 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17248 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:50,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5197 Valid, 17248 Invalid, 1640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:39:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2021-12-14 15:39:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2021-12-14 15:39:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:39:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2021-12-14 15:39:50,386 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2021-12-14 15:39:50,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:50,386 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2021-12-14 15:39:50,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2021-12-14 15:39:50,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:50,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:50,388 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] [2021-12-14 15:39:50,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:39:50,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2021-12-14 15:39:50,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:50,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756554529] [2021-12-14 15:39:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:50,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:50,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:50,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:50,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756554529] [2021-12-14 15:39:50,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756554529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:50,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:50,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:50,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444016759] [2021-12-14 15:39:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:50,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:50,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:50,493 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:51,606 INFO L93 Difference]: Finished difference Result 3561 states and 6264 transitions. [2021-12-14 15:39:51,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:51,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:51,618 INFO L225 Difference]: With dead ends: 3561 [2021-12-14 15:39:51,619 INFO L226 Difference]: Without dead ends: 2966 [2021-12-14 15:39:51,621 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 [2021-12-14 15:39:51,622 INFO L933 BasicCegarLoop]: 4477 mSDtfsCounter, 4977 mSDsluCounter, 12487 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 16964 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:51,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 16964 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:39:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-12-14 15:39:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2733. [2021-12-14 15:39:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8071028037383177) internal successors, (4834), 2679 states have internal predecessors, (4834), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-14 15:39:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4921 transitions. [2021-12-14 15:39:51,699 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4921 transitions. Word has length 146 [2021-12-14 15:39:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4921 transitions. [2021-12-14 15:39:51,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4921 transitions. [2021-12-14 15:39:51,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:51,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:51,702 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] [2021-12-14 15:39:51,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:39:51,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2021-12-14 15:39:51,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:51,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926836054] [2021-12-14 15:39:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:51,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:51,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:51,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926836054] [2021-12-14 15:39:51,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926836054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:51,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:51,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:51,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668613147] [2021-12-14 15:39:51,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:51,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:51,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:51,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:51,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:51,826 INFO L87 Difference]: Start difference. First operand 2733 states and 4921 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:53,833 INFO L93 Difference]: Finished difference Result 3969 states and 6909 transitions. [2021-12-14 15:39:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:39:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:53,862 INFO L225 Difference]: With dead ends: 3969 [2021-12-14 15:39:53,864 INFO L226 Difference]: Without dead ends: 3374 [2021-12-14 15:39:53,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:39:53,874 INFO L933 BasicCegarLoop]: 4763 mSDtfsCounter, 5194 mSDsluCounter, 17461 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22224 SdHoareTripleChecker+Invalid, 2465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:53,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5210 Valid, 22224 Invalid, 2465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:39:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2021-12-14 15:39:54,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3016. [2021-12-14 15:39:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 2933 states have (on average 1.7852028639618138) internal successors, (5236), 2938 states have internal predecessors, (5236), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2021-12-14 15:39:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5361 transitions. [2021-12-14 15:39:54,058 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5361 transitions. Word has length 146 [2021-12-14 15:39:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:54,063 INFO L470 AbstractCegarLoop]: Abstraction has 3016 states and 5361 transitions. [2021-12-14 15:39:54,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5361 transitions. [2021-12-14 15:39:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:54,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:54,065 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] [2021-12-14 15:39:54,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:39:54,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:54,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2021-12-14 15:39:54,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:54,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108040622] [2021-12-14 15:39:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:54,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:54,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:54,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108040622] [2021-12-14 15:39:54,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108040622] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:54,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:54,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:54,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225417967] [2021-12-14 15:39:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:54,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:54,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:54,212 INFO L87 Difference]: Start difference. First operand 3016 states and 5361 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:56,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:56,508 INFO L93 Difference]: Finished difference Result 5038 states and 8605 transitions. [2021-12-14 15:39:56,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:39:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:56,531 INFO L225 Difference]: With dead ends: 5038 [2021-12-14 15:39:56,531 INFO L226 Difference]: Without dead ends: 4160 [2021-12-14 15:39:56,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:39:56,538 INFO L933 BasicCegarLoop]: 4756 mSDtfsCounter, 5190 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5206 SdHoareTripleChecker+Valid, 22213 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:56,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5206 Valid, 22213 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:39:56,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2021-12-14 15:39:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 3585. [2021-12-14 15:39:56,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7511587485515643) internal successors, (6045), 3459 states have internal predecessors, (6045), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:39:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6250 transitions. [2021-12-14 15:39:56,708 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6250 transitions. Word has length 146 [2021-12-14 15:39:56,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:56,709 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6250 transitions. [2021-12-14 15:39:56,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6250 transitions. [2021-12-14 15:39:56,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:56,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:56,711 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] [2021-12-14 15:39:56,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:39:56,712 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:56,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:56,712 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2021-12-14 15:39:56,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021747336] [2021-12-14 15:39:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:56,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:56,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:56,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021747336] [2021-12-14 15:39:56,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021747336] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:56,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:56,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:56,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45619300] [2021-12-14 15:39:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:56,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:56,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:56,822 INFO L87 Difference]: Start difference. First operand 3585 states and 6250 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:57,762 INFO L93 Difference]: Finished difference Result 5595 states and 9483 transitions. [2021-12-14 15:39:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:57,776 INFO L225 Difference]: With dead ends: 5595 [2021-12-14 15:39:57,776 INFO L226 Difference]: Without dead ends: 4148 [2021-12-14 15:39:57,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:39:57,781 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 4974 mSDsluCounter, 12486 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4991 SdHoareTripleChecker+Valid, 16950 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:57,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4991 Valid, 16950 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:39:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4148 states. [2021-12-14 15:39:57,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4148 to 3585. [2021-12-14 15:39:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.749710312862109) internal successors, (6040), 3459 states have internal predecessors, (6040), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:39:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6245 transitions. [2021-12-14 15:39:57,870 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6245 transitions. Word has length 146 [2021-12-14 15:39:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:57,870 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6245 transitions. [2021-12-14 15:39:57,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6245 transitions. [2021-12-14 15:39:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:57,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:57,873 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] [2021-12-14 15:39:57,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:39:57,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2021-12-14 15:39:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018333131] [2021-12-14 15:39:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:57,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:57,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018333131] [2021-12-14 15:39:57,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018333131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:57,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:57,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:57,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221875034] [2021-12-14 15:39:57,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:57,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:57,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:57,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:57,973 INFO L87 Difference]: Start difference. First operand 3585 states and 6245 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:39:59,329 INFO L93 Difference]: Finished difference Result 5589 states and 9456 transitions. [2021-12-14 15:39:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:39:59,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:39:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:39:59,378 INFO L225 Difference]: With dead ends: 5589 [2021-12-14 15:39:59,378 INFO L226 Difference]: Without dead ends: 4142 [2021-12-14 15:39:59,383 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 [2021-12-14 15:39:59,384 INFO L933 BasicCegarLoop]: 4432 mSDtfsCounter, 4895 mSDsluCounter, 16607 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4912 SdHoareTripleChecker+Valid, 21039 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:39:59,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4912 Valid, 21039 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:39:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-12-14 15:39:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3585. [2021-12-14 15:39:59,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7482618771726535) internal successors, (6035), 3459 states have internal predecessors, (6035), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:39:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6240 transitions. [2021-12-14 15:39:59,556 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6240 transitions. Word has length 146 [2021-12-14 15:39:59,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:39:59,556 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6240 transitions. [2021-12-14 15:39:59,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:39:59,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6240 transitions. [2021-12-14 15:39:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:39:59,558 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:39:59,558 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] [2021-12-14 15:39:59,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:39:59,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:39:59,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:39:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2021-12-14 15:39:59,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:39:59,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824373519] [2021-12-14 15:39:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:39:59,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:39:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:39:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:39:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:39:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:39:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:39:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:39:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:39:59,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:39:59,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824373519] [2021-12-14 15:39:59,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824373519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:39:59,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:39:59,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:39:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410922742] [2021-12-14 15:39:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:39:59,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:39:59,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:39:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:39:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:39:59,740 INFO L87 Difference]: Start difference. First operand 3585 states and 6240 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:01,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:01,113 INFO L93 Difference]: Finished difference Result 5583 states and 9429 transitions. [2021-12-14 15:40:01,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:40:01,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:01,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:01,136 INFO L225 Difference]: With dead ends: 5583 [2021-12-14 15:40:01,136 INFO L226 Difference]: Without dead ends: 4136 [2021-12-14 15:40:01,144 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 [2021-12-14 15:40:01,145 INFO L933 BasicCegarLoop]: 4456 mSDtfsCounter, 4839 mSDsluCounter, 16608 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:01,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 21064 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:40:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2021-12-14 15:40:01,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3585. [2021-12-14 15:40:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3585 states, 3452 states have (on average 1.7468134414831982) internal successors, (6030), 3459 states have internal predecessors, (6030), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2021-12-14 15:40:01,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3585 states to 3585 states and 6235 transitions. [2021-12-14 15:40:01,345 INFO L78 Accepts]: Start accepts. Automaton has 3585 states and 6235 transitions. Word has length 146 [2021-12-14 15:40:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:01,346 INFO L470 AbstractCegarLoop]: Abstraction has 3585 states and 6235 transitions. [2021-12-14 15:40:01,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:01,347 INFO L276 IsEmpty]: Start isEmpty. Operand 3585 states and 6235 transitions. [2021-12-14 15:40:01,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:01,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:01,349 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] [2021-12-14 15:40:01,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:40:01,349 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:01,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2021-12-14 15:40:01,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:01,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231792340] [2021-12-14 15:40:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:01,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:01,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:01,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:01,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231792340] [2021-12-14 15:40:01,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231792340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:01,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:01,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:01,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721415666] [2021-12-14 15:40:01,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:01,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:01,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:01,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:01,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:01,522 INFO L87 Difference]: Start difference. First operand 3585 states and 6235 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:03,337 INFO L93 Difference]: Finished difference Result 7089 states and 11766 transitions. [2021-12-14 15:40:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:03,371 INFO L225 Difference]: With dead ends: 7089 [2021-12-14 15:40:03,387 INFO L226 Difference]: Without dead ends: 5642 [2021-12-14 15:40:03,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:40:03,395 INFO L933 BasicCegarLoop]: 4733 mSDtfsCounter, 5168 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 22190 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:03,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 22190 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:40:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-12-14 15:40:03,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 4741. [2021-12-14 15:40:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4741 states, 4508 states have (on average 1.6987577639751552) internal successors, (7658), 4519 states have internal predecessors, (7658), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2021-12-14 15:40:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 8029 transitions. [2021-12-14 15:40:03,697 INFO L78 Accepts]: Start accepts. Automaton has 4741 states and 8029 transitions. Word has length 146 [2021-12-14 15:40:03,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:03,698 INFO L470 AbstractCegarLoop]: Abstraction has 4741 states and 8029 transitions. [2021-12-14 15:40:03,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:03,698 INFO L276 IsEmpty]: Start isEmpty. Operand 4741 states and 8029 transitions. [2021-12-14 15:40:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:03,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:03,700 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] [2021-12-14 15:40:03,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:40:03,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:03,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:03,703 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2021-12-14 15:40:03,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:03,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428085492] [2021-12-14 15:40:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:03,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:03,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:03,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:03,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428085492] [2021-12-14 15:40:03,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428085492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:03,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:03,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:03,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410374158] [2021-12-14 15:40:03,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:03,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:03,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:03,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:03,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:03,818 INFO L87 Difference]: Start difference. First operand 4741 states and 8029 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:06,121 INFO L93 Difference]: Finished difference Result 11231 states and 18258 transitions. [2021-12-14 15:40:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:40:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:06,140 INFO L225 Difference]: With dead ends: 11231 [2021-12-14 15:40:06,141 INFO L226 Difference]: Without dead ends: 8628 [2021-12-14 15:40:06,150 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 [2021-12-14 15:40:06,151 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 5170 mSDsluCounter, 17457 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 22183 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:06,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5186 Valid, 22183 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:40:06,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8628 states. [2021-12-14 15:40:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8628 to 7054. [2021-12-14 15:40:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7054 states, 6621 states have (on average 1.6480894124754568) internal successors, (10912), 6640 states have internal predecessors, (10912), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2021-12-14 15:40:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7054 states to 7054 states and 11633 transitions. [2021-12-14 15:40:06,406 INFO L78 Accepts]: Start accepts. Automaton has 7054 states and 11633 transitions. Word has length 146 [2021-12-14 15:40:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:06,407 INFO L470 AbstractCegarLoop]: Abstraction has 7054 states and 11633 transitions. [2021-12-14 15:40:06,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7054 states and 11633 transitions. [2021-12-14 15:40:06,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:06,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:06,414 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] [2021-12-14 15:40:06,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:40:06,414 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:06,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:06,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2021-12-14 15:40:06,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:06,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649544345] [2021-12-14 15:40:06,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:06,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:06,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649544345] [2021-12-14 15:40:06,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649544345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:06,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:06,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:06,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862028719] [2021-12-14 15:40:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:06,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:06,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:06,531 INFO L87 Difference]: Start difference. First operand 7054 states and 11633 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:09,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:09,712 INFO L93 Difference]: Finished difference Result 21460 states and 34282 transitions. [2021-12-14 15:40:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:40:09,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:09,757 INFO L225 Difference]: With dead ends: 21460 [2021-12-14 15:40:09,757 INFO L226 Difference]: Without dead ends: 16544 [2021-12-14 15:40:09,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:40:09,776 INFO L933 BasicCegarLoop]: 4854 mSDtfsCounter, 5247 mSDsluCounter, 17446 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5262 SdHoareTripleChecker+Valid, 22300 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:09,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5262 Valid, 22300 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:40:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2021-12-14 15:40:10,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11504. [2021-12-14 15:40:10,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11504 states, 10687 states have (on average 1.6053148685318612) internal successors, (17156), 10722 states have internal predecessors, (17156), 585 states have call successors, (585), 199 states have call predecessors, (585), 230 states have return successors, (858), 614 states have call predecessors, (858), 583 states have call successors, (858) [2021-12-14 15:40:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11504 states to 11504 states and 18599 transitions. [2021-12-14 15:40:10,364 INFO L78 Accepts]: Start accepts. Automaton has 11504 states and 18599 transitions. Word has length 146 [2021-12-14 15:40:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:10,364 INFO L470 AbstractCegarLoop]: Abstraction has 11504 states and 18599 transitions. [2021-12-14 15:40:10,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:10,365 INFO L276 IsEmpty]: Start isEmpty. Operand 11504 states and 18599 transitions. [2021-12-14 15:40:10,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:10,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:10,383 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] [2021-12-14 15:40:10,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:40:10,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:10,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2021-12-14 15:40:10,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:10,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926127839] [2021-12-14 15:40:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:10,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:10,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:10,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926127839] [2021-12-14 15:40:10,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926127839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:10,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:10,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:10,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759242889] [2021-12-14 15:40:10,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:10,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:10,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:10,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:10,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:10,499 INFO L87 Difference]: Start difference. First operand 11504 states and 18599 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:14,280 INFO L93 Difference]: Finished difference Result 38948 states and 61842 transitions. [2021-12-14 15:40:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:40:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:14,385 INFO L225 Difference]: With dead ends: 38948 [2021-12-14 15:40:14,385 INFO L226 Difference]: Without dead ends: 29582 [2021-12-14 15:40:14,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:40:14,418 INFO L933 BasicCegarLoop]: 4710 mSDtfsCounter, 5455 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:14,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 22159 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:40:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29582 states. [2021-12-14 15:40:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29582 to 20545. [2021-12-14 15:40:15,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20545 states, 18976 states have (on average 1.577887858347386) internal successors, (29942), 19043 states have internal predecessors, (29942), 1113 states have call successors, (1113), 391 states have call predecessors, (1113), 454 states have return successors, (1904), 1174 states have call predecessors, (1904), 1111 states have call successors, (1904) [2021-12-14 15:40:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20545 states to 20545 states and 32959 transitions. [2021-12-14 15:40:15,518 INFO L78 Accepts]: Start accepts. Automaton has 20545 states and 32959 transitions. Word has length 146 [2021-12-14 15:40:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:15,520 INFO L470 AbstractCegarLoop]: Abstraction has 20545 states and 32959 transitions. [2021-12-14 15:40:15,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20545 states and 32959 transitions. [2021-12-14 15:40:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:15,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:15,531 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] [2021-12-14 15:40:15,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:40:15,531 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:15,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2021-12-14 15:40:15,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276398699] [2021-12-14 15:40:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:15,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:15,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:15,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:15,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276398699] [2021-12-14 15:40:15,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276398699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:15,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:15,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:15,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973460258] [2021-12-14 15:40:15,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:15,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:15,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:15,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:15,673 INFO L87 Difference]: Start difference. First operand 20545 states and 32959 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:20,861 INFO L93 Difference]: Finished difference Result 73779 states and 117496 transitions. [2021-12-14 15:40:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:40:20,861 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:21,054 INFO L225 Difference]: With dead ends: 73779 [2021-12-14 15:40:21,055 INFO L226 Difference]: Without dead ends: 55372 [2021-12-14 15:40:21,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:40:21,112 INFO L933 BasicCegarLoop]: 4705 mSDtfsCounter, 5415 mSDsluCounter, 17449 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:21,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5441 Valid, 22154 Invalid, 2341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:40:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55372 states. [2021-12-14 15:40:23,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55372 to 38594. [2021-12-14 15:40:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38594 states, 35553 states have (on average 1.5622872893989255) internal successors, (55544), 35684 states have internal predecessors, (55544), 2137 states have call successors, (2137), 775 states have call predecessors, (2137), 902 states have return successors, (4450), 2262 states have call predecessors, (4450), 2135 states have call successors, (4450) [2021-12-14 15:40:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38594 states to 38594 states and 62131 transitions. [2021-12-14 15:40:23,312 INFO L78 Accepts]: Start accepts. Automaton has 38594 states and 62131 transitions. Word has length 146 [2021-12-14 15:40:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:23,312 INFO L470 AbstractCegarLoop]: Abstraction has 38594 states and 62131 transitions. [2021-12-14 15:40:23,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 38594 states and 62131 transitions. [2021-12-14 15:40:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:23,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:23,356 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] [2021-12-14 15:40:23,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:40:23,356 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash -177302660, now seen corresponding path program 1 times [2021-12-14 15:40:23,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511711042] [2021-12-14 15:40:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:23,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:23,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:23,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511711042] [2021-12-14 15:40:23,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511711042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:23,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:23,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:23,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759368383] [2021-12-14 15:40:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:23,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:23,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:23,668 INFO L87 Difference]: Start difference. First operand 38594 states and 62131 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:40:32,156 INFO L93 Difference]: Finished difference Result 142258 states and 228862 transitions. [2021-12-14 15:40:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:40:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2021-12-14 15:40:32,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:40:32,624 INFO L225 Difference]: With dead ends: 142258 [2021-12-14 15:40:32,624 INFO L226 Difference]: Without dead ends: 105802 [2021-12-14 15:40:32,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:40:32,726 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5276 mSDsluCounter, 16899 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21502 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:40:32,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5291 Valid, 21502 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:40:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105802 states. [2021-12-14 15:40:37,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105802 to 74627. [2021-12-14 15:40:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74627 states, 68706 states have (on average 1.5545949407620878) internal successors, (106810), 68965 states have internal predecessors, (106810), 4121 states have call successors, (4121), 1543 states have call predecessors, (4121), 1798 states have return successors, (10936), 4374 states have call predecessors, (10936), 4119 states have call successors, (10936) [2021-12-14 15:40:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74627 states to 74627 states and 121867 transitions. [2021-12-14 15:40:37,398 INFO L78 Accepts]: Start accepts. Automaton has 74627 states and 121867 transitions. Word has length 146 [2021-12-14 15:40:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:40:37,398 INFO L470 AbstractCegarLoop]: Abstraction has 74627 states and 121867 transitions. [2021-12-14 15:40:37,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:40:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 74627 states and 121867 transitions. [2021-12-14 15:40:37,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 15:40:37,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:40:37,428 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] [2021-12-14 15:40:37,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:40:37,429 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:40:37,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:40:37,429 INFO L85 PathProgramCache]: Analyzing trace with hash 294053690, now seen corresponding path program 1 times [2021-12-14 15:40:37,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:40:37,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113339171] [2021-12-14 15:40:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:40:37,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:40:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:40:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 15:40:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 15:40:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-14 15:40:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-14 15:40:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:40:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:40:37,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:40:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113339171] [2021-12-14 15:40:37,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113339171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:40:37,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:40:37,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:40:37,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186061719] [2021-12-14 15:40:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:40:37,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:40:37,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:40:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:40:37,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:40:37,582 INFO L87 Difference]: Start difference. First operand 74627 states and 121867 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)