./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.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_label43+token_ring.11.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ba472d0eab58f0bee7768d9e5b3bb2a3404d90b32bd7c010fe277536e64fd4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:41:40,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:41:40,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:41:40,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:41:40,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:41:40,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:41:40,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:41:40,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:41:40,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:41:40,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:41:40,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:41:40,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:41:40,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:41:40,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:41:40,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:41:41,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:41:41,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:41:41,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:41:41,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:41:41,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:41:41,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:41:41,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:41:41,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:41:41,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:41:41,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:41:41,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:41:41,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:41:41,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:41:41,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:41:41,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:41:41,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:41:41,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:41:41,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:41:41,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:41:41,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:41:41,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:41:41,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:41:41,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:41:41,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:41:41,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:41:41,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:41:41,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:41:41,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:41:41,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:41:41,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:41:41,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:41:41,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:41:41,055 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:41:41,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:41:41,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:41:41,055 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:41:41,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:41:41,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:41:41,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:41:41,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:41:41,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:41:41,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:41:41,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:41:41,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:41:41,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:41:41,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:41:41,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:41:41,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:41:41,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:41:41,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:41:41,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:41:41,060 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:41:41,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:41:41,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:41:41,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:41:41,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ba472d0eab58f0bee7768d9e5b3bb2a3404d90b32bd7c010fe277536e64fd4 [2021-12-14 15:41:41,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:41:41,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:41:41,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:41:41,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:41:41,284 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:41:41,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c [2021-12-14 15:41:41,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c554022ed/2a9d242f32b64338ab6fabbb009d99fa/FLAGdb86f19f1 [2021-12-14 15:41:42,092 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:41:42,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c [2021-12-14 15:41:42,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c554022ed/2a9d242f32b64338ab6fabbb009d99fa/FLAGdb86f19f1 [2021-12-14 15:41:42,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c554022ed/2a9d242f32b64338ab6fabbb009d99fa [2021-12-14 15:41:42,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:41:42,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:41:42,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:41:42,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:41:42,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:41:42,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:42" (1/1) ... [2021-12-14 15:41:42,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e1124b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:42, skipping insertion in model container [2021-12-14 15:41:42,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:41:42" (1/1) ... [2021-12-14 15:41:42,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:41:42,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:41:44,071 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c[381679,381692] [2021-12-14 15:41:44,097 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c[383339,383352] [2021-12-14 15:41:44,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:41:44,296 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:41:44,866 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c[381679,381692] [2021-12-14 15:41:44,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.11.cil-1.c[383339,383352] [2021-12-14 15:41:44,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:41:44,942 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:41:44,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44 WrapperNode [2021-12-14 15:41:44,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:41:44,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:41:44,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:41:44,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:41:44,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,344 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2021-12-14 15:41:45,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:41:45,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:41:45,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:41:45,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:41:45,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:41:45,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:41:45,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:41:45,772 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:41:45,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (1/1) ... [2021-12-14 15:41:45,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:41:45,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:41:45,852 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 15:41:45,870 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 15:41:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:41:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:41:45,893 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:41:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:41:45,893 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:41:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:41:45,894 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:41:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:41:45,894 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:41:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:41:45,894 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:41:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:41:45,894 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:41:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:41:45,895 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:41:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:41:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:41:45,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:41:46,031 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:41:46,032 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:41:50,836 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:41:50,873 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:41:50,874 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-12-14 15:41:50,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:50 BoogieIcfgContainer [2021-12-14 15:41:50,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:41:50,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:41:50,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:41:50,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:41:50,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:41:42" (1/3) ... [2021-12-14 15:41:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604f0cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:50, skipping insertion in model container [2021-12-14 15:41:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:41:44" (2/3) ... [2021-12-14 15:41:50,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@604f0cf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:41:50, skipping insertion in model container [2021-12-14 15:41:50,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:41:50" (3/3) ... [2021-12-14 15:41:50,886 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.11.cil-1.c [2021-12-14 15:41:50,893 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:41:50,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:41:50,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:41:50,946 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 15:41:50,947 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:41:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:41:51,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:41:51,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:51,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:51,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2021-12-14 15:41:51,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:51,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287792775] [2021-12-14 15:41:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:51,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:51,472 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 15:41:51,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:51,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287792775] [2021-12-14 15:41:51,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287792775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:51,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:51,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:41:51,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239768857] [2021-12-14 15:41:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:51,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:41:51,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:41:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:41:51,511 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 15:41:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:41:52,586 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2021-12-14 15:41:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:41:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 168 [2021-12-14 15:41:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:41:52,608 INFO L225 Difference]: With dead ends: 5214 [2021-12-14 15:41:52,608 INFO L226 Difference]: Without dead ends: 2611 [2021-12-14 15:41:52,615 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 15:41:52,617 INFO L933 BasicCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12476 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17125 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:41:52,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 17125 Invalid, 713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:41:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-12-14 15:41:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2021-12-14 15:41:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-14 15:41:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2021-12-14 15:41:52,712 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2021-12-14 15:41:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:41:52,712 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2021-12-14 15:41:52,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 15:41:52,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2021-12-14 15:41:52,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:41:52,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:52,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:52,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:41:52,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2021-12-14 15:41:52,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:52,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759222860] [2021-12-14 15:41:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:52,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:52,957 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 15:41:52,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:52,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759222860] [2021-12-14 15:41:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759222860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:52,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:52,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:41:52,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401662405] [2021-12-14 15:41:52,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:52,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:41:52,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:52,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:41:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:41:52,961 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 15:41:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:41:55,506 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2021-12-14 15:41:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:41:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 168 [2021-12-14 15:41:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:41:55,519 INFO L225 Difference]: With dead ends: 3438 [2021-12-14 15:41:55,519 INFO L226 Difference]: Without dead ends: 3098 [2021-12-14 15:41:55,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:41:55,523 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12852 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17480 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:41:55,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 17480 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:41:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-12-14 15:41:55,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2021-12-14 15:41:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:41:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2021-12-14 15:41:55,697 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2021-12-14 15:41:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:41:55,697 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2021-12-14 15:41:55,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 15:41:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2021-12-14 15:41:55,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:41:55,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:55,700 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, 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 15:41:55,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:41:55,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:55,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:55,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2021-12-14 15:41:55,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:55,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848943055] [2021-12-14 15:41:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:55,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:55,884 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 15:41:55,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:55,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848943055] [2021-12-14 15:41:55,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848943055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:55,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:55,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:41:55,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098142251] [2021-12-14 15:41:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:55,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:41:55,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:41:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:41:55,886 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:41:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:41:57,169 INFO L93 Difference]: Finished difference Result 3811 states and 6680 transitions. [2021-12-14 15:41:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:41:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:41:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:41:57,181 INFO L225 Difference]: With dead ends: 3811 [2021-12-14 15:41:57,182 INFO L226 Difference]: Without dead ends: 3116 [2021-12-14 15:41:57,185 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 15:41:57,186 INFO L933 BasicCegarLoop]: 4575 mSDtfsCounter, 5162 mSDsluCounter, 12589 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5181 SdHoareTripleChecker+Valid, 17164 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:41:57,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5181 Valid, 17164 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:41:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2021-12-14 15:41:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2835. [2021-12-14 15:41:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8009376126938335) internal successors, (4994), 2777 states have internal predecessors, (4994), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-12-14 15:41:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5089 transitions. [2021-12-14 15:41:57,268 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5089 transitions. Word has length 168 [2021-12-14 15:41:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:41:57,269 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 5089 transitions. [2021-12-14 15:41:57,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:41:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5089 transitions. [2021-12-14 15:41:57,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:41:57,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:41:57,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:41:57,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:41:57,272 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:41:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:41:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2021-12-14 15:41:57,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:41:57,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002397635] [2021-12-14 15:41:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:41:57,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:41:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:41:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:41:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:41:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:41:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:41:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:41:57,403 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 15:41:57,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:41:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002397635] [2021-12-14 15:41:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002397635] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:41:57,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:41:57,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:41:57,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309728118] [2021-12-14 15:41:57,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:41:57,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:41:57,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:41:57,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:41:57,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:41:57,406 INFO L87 Difference]: Start difference. First operand 2835 states and 5089 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:00,123 INFO L93 Difference]: Finished difference Result 4292 states and 7445 transitions. [2021-12-14 15:42:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:00,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:00,149 INFO L225 Difference]: With dead ends: 4292 [2021-12-14 15:42:00,152 INFO L226 Difference]: Without dead ends: 3597 [2021-12-14 15:42:00,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:00,158 INFO L933 BasicCegarLoop]: 4913 mSDtfsCounter, 5425 mSDsluCounter, 17723 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5443 SdHoareTripleChecker+Valid, 22636 SdHoareTripleChecker+Invalid, 2919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:00,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5443 Valid, 22636 Invalid, 2919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2021-12-14 15:42:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3165. [2021-12-14 15:42:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.777633289986996) internal successors, (5468), 3081 states have internal predecessors, (5468), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-12-14 15:42:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5605 transitions. [2021-12-14 15:42:00,244 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5605 transitions. Word has length 168 [2021-12-14 15:42:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:00,245 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 5605 transitions. [2021-12-14 15:42:00,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5605 transitions. [2021-12-14 15:42:00,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:00,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:00,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:00,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:42:00,247 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:00,248 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2021-12-14 15:42:00,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:00,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937472591] [2021-12-14 15:42:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:00,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:00,347 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 15:42:00,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:00,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937472591] [2021-12-14 15:42:00,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937472591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:00,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:00,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:00,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035381034] [2021-12-14 15:42:00,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:00,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:00,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:00,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:00,349 INFO L87 Difference]: Start difference. First operand 3165 states and 5605 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:03,033 INFO L93 Difference]: Finished difference Result 5554 states and 9461 transitions. [2021-12-14 15:42:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:03,060 INFO L225 Difference]: With dead ends: 5554 [2021-12-14 15:42:03,061 INFO L226 Difference]: Without dead ends: 4529 [2021-12-14 15:42:03,064 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 15:42:03,067 INFO L933 BasicCegarLoop]: 4905 mSDtfsCounter, 5422 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22624 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:03,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5440 Valid, 22624 Invalid, 2920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2021-12-14 15:42:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 3827. [2021-12-14 15:42:03,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3827 states, 3684 states have (on average 1.742399565689468) internal successors, (6419), 3691 states have internal predecessors, (6419), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-12-14 15:42:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3827 states to 3827 states and 6644 transitions. [2021-12-14 15:42:03,178 INFO L78 Accepts]: Start accepts. Automaton has 3827 states and 6644 transitions. Word has length 168 [2021-12-14 15:42:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:03,178 INFO L470 AbstractCegarLoop]: Abstraction has 3827 states and 6644 transitions. [2021-12-14 15:42:03,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:03,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3827 states and 6644 transitions. [2021-12-14 15:42:03,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:03,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:03,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:03,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:42:03,181 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2021-12-14 15:42:03,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985870886] [2021-12-14 15:42:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:03,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:03,319 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 15:42:03,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:03,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985870886] [2021-12-14 15:42:03,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985870886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:03,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:03,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:03,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251834245] [2021-12-14 15:42:03,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:03,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:03,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:03,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:03,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:03,322 INFO L87 Difference]: Start difference. First operand 3827 states and 6644 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:05,824 INFO L93 Difference]: Finished difference Result 7986 states and 13324 transitions. [2021-12-14 15:42:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:05,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:05,845 INFO L225 Difference]: With dead ends: 7986 [2021-12-14 15:42:05,845 INFO L226 Difference]: Without dead ends: 6299 [2021-12-14 15:42:05,851 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 15:42:05,852 INFO L933 BasicCegarLoop]: 4901 mSDtfsCounter, 5418 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5436 SdHoareTripleChecker+Valid, 22620 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:05,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5436 Valid, 22620 Invalid, 2915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-14 15:42:05,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2021-12-14 15:42:06,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 5153. [2021-12-14 15:42:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6978784169726642) internal successors, (8323), 4913 states have internal predecessors, (8323), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8730 transitions. [2021-12-14 15:42:06,083 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8730 transitions. Word has length 168 [2021-12-14 15:42:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:06,084 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8730 transitions. [2021-12-14 15:42:06,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8730 transitions. [2021-12-14 15:42:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:06,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:06,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:06,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:42:06,088 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2021-12-14 15:42:06,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:06,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370559494] [2021-12-14 15:42:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:06,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:06,231 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 15:42:06,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:06,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370559494] [2021-12-14 15:42:06,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370559494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:06,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:06,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:06,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852566659] [2021-12-14 15:42:06,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:06,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:06,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:06,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:06,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:06,242 INFO L87 Difference]: Start difference. First operand 5153 states and 8730 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:07,544 INFO L93 Difference]: Finished difference Result 9338 states and 15489 transitions. [2021-12-14 15:42:07,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:07,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:07,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:07,561 INFO L225 Difference]: With dead ends: 9338 [2021-12-14 15:42:07,561 INFO L226 Difference]: Without dead ends: 6325 [2021-12-14 15:42:07,568 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 15:42:07,568 INFO L933 BasicCegarLoop]: 4558 mSDtfsCounter, 5165 mSDsluCounter, 12588 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5184 SdHoareTripleChecker+Valid, 17146 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:07,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5184 Valid, 17146 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 15:42:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6325 states. [2021-12-14 15:42:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6325 to 5153. [2021-12-14 15:42:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6960424316605467) internal successors, (8314), 4913 states have internal predecessors, (8314), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8721 transitions. [2021-12-14 15:42:07,718 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8721 transitions. Word has length 168 [2021-12-14 15:42:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:07,718 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8721 transitions. [2021-12-14 15:42:07,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8721 transitions. [2021-12-14 15:42:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:07,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:07,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:07,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:42:07,721 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:07,722 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2021-12-14 15:42:07,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:07,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919283229] [2021-12-14 15:42:07,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:07,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:07,837 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 15:42:07,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:07,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919283229] [2021-12-14 15:42:07,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919283229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:07,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:07,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:07,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711212587] [2021-12-14 15:42:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:07,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:07,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:07,839 INFO L87 Difference]: Start difference. First operand 5153 states and 8721 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:09,378 INFO L93 Difference]: Finished difference Result 9318 states and 15423 transitions. [2021-12-14 15:42:09,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:42:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:09,393 INFO L225 Difference]: With dead ends: 9318 [2021-12-14 15:42:09,394 INFO L226 Difference]: Without dead ends: 6305 [2021-12-14 15:42:09,402 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 15:42:09,403 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 5006 mSDsluCounter, 16736 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 21288 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:09,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5025 Valid, 21288 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:42:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6305 states. [2021-12-14 15:42:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6305 to 5153. [2021-12-14 15:42:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5153 states, 4902 states have (on average 1.6942064463484292) internal successors, (8305), 4913 states have internal predecessors, (8305), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-12-14 15:42:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5153 states to 5153 states and 8712 transitions. [2021-12-14 15:42:09,617 INFO L78 Accepts]: Start accepts. Automaton has 5153 states and 8712 transitions. Word has length 168 [2021-12-14 15:42:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:09,618 INFO L470 AbstractCegarLoop]: Abstraction has 5153 states and 8712 transitions. [2021-12-14 15:42:09,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 5153 states and 8712 transitions. [2021-12-14 15:42:09,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:09,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:09,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:09,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:42:09,624 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2021-12-14 15:42:09,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827701898] [2021-12-14 15:42:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:09,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:09,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:09,757 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 15:42:09,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827701898] [2021-12-14 15:42:09,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827701898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:09,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:09,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:09,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163923643] [2021-12-14 15:42:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:09,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:09,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:09,762 INFO L87 Difference]: Start difference. First operand 5153 states and 8712 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:12,641 INFO L93 Difference]: Finished difference Result 12820 states and 20924 transitions. [2021-12-14 15:42:12,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:12,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:12,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:12,662 INFO L225 Difference]: With dead ends: 12820 [2021-12-14 15:42:12,663 INFO L226 Difference]: Without dead ends: 9807 [2021-12-14 15:42:12,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:12,672 INFO L933 BasicCegarLoop]: 4879 mSDtfsCounter, 5401 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5419 SdHoareTripleChecker+Valid, 22598 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:12,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5419 Valid, 22598 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9807 states. [2021-12-14 15:42:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9807 to 7837. [2021-12-14 15:42:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7837 states, 7370 states have (on average 1.6474898236092266) internal successors, (12142), 7389 states have internal predecessors, (12142), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-12-14 15:42:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7837 states to 7837 states and 12931 transitions. [2021-12-14 15:42:12,936 INFO L78 Accepts]: Start accepts. Automaton has 7837 states and 12931 transitions. Word has length 168 [2021-12-14 15:42:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:12,937 INFO L470 AbstractCegarLoop]: Abstraction has 7837 states and 12931 transitions. [2021-12-14 15:42:12,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7837 states and 12931 transitions. [2021-12-14 15:42:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:12,941 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:12,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:12,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:42:12,941 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:12,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:12,943 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2021-12-14 15:42:12,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:12,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130703903] [2021-12-14 15:42:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:12,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:13,063 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 15:42:13,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:13,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130703903] [2021-12-14 15:42:13,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130703903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:13,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:13,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:13,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509790120] [2021-12-14 15:42:13,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:13,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:13,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:13,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:13,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:13,066 INFO L87 Difference]: Start difference. First operand 7837 states and 12931 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:16,206 INFO L93 Difference]: Finished difference Result 22550 states and 36383 transitions. [2021-12-14 15:42:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:16,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:16,252 INFO L225 Difference]: With dead ends: 22550 [2021-12-14 15:42:16,252 INFO L226 Difference]: Without dead ends: 16853 [2021-12-14 15:42:16,272 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 15:42:16,273 INFO L933 BasicCegarLoop]: 4874 mSDtfsCounter, 5400 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5418 SdHoareTripleChecker+Valid, 22593 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:16,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5418 Valid, 22593 Invalid, 2851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16853 states. [2021-12-14 15:42:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16853 to 13214. [2021-12-14 15:42:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13214 states, 12315 states have (on average 1.6099066179455948) internal successors, (19826), 12350 states have internal predecessors, (19826), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-12-14 15:42:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13214 states to 13214 states and 21433 transitions. [2021-12-14 15:42:16,797 INFO L78 Accepts]: Start accepts. Automaton has 13214 states and 21433 transitions. Word has length 168 [2021-12-14 15:42:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:16,797 INFO L470 AbstractCegarLoop]: Abstraction has 13214 states and 21433 transitions. [2021-12-14 15:42:16,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 13214 states and 21433 transitions. [2021-12-14 15:42:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:16,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:16,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:16,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:42:16,804 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2021-12-14 15:42:16,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:16,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950468950] [2021-12-14 15:42:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:16,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:16,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:17,004 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 15:42:17,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950468950] [2021-12-14 15:42:17,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950468950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:17,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:17,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:17,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901533408] [2021-12-14 15:42:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:17,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:17,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:17,007 INFO L87 Difference]: Start difference. First operand 13214 states and 21433 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:20,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:20,739 INFO L93 Difference]: Finished difference Result 42005 states and 67483 transitions. [2021-12-14 15:42:20,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:20,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:20,832 INFO L225 Difference]: With dead ends: 42005 [2021-12-14 15:42:20,832 INFO L226 Difference]: Without dead ends: 30931 [2021-12-14 15:42:20,868 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 15:42:20,869 INFO L933 BasicCegarLoop]: 4869 mSDtfsCounter, 5399 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2759 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 22588 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:20,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5417 Valid, 22588 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2759 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30931 states. [2021-12-14 15:42:21,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30931 to 23999. [2021-12-14 15:42:22,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23999 states, 22236 states have (on average 1.5848174132038135) internal successors, (35240), 22303 states have internal predecessors, (35240), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-12-14 15:42:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23999 states to 23999 states and 38645 transitions. [2021-12-14 15:42:22,059 INFO L78 Accepts]: Start accepts. Automaton has 23999 states and 38645 transitions. Word has length 168 [2021-12-14 15:42:22,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:22,059 INFO L470 AbstractCegarLoop]: Abstraction has 23999 states and 38645 transitions. [2021-12-14 15:42:22,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 23999 states and 38645 transitions. [2021-12-14 15:42:22,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:22,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:22,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:22,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:42:22,070 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:22,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767897, now seen corresponding path program 1 times [2021-12-14 15:42:22,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469796526] [2021-12-14 15:42:22,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:22,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:22,189 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 15:42:22,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:22,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469796526] [2021-12-14 15:42:22,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469796526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:22,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:22,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:22,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215119868] [2021-12-14 15:42:22,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:22,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:22,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:22,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:22,191 INFO L87 Difference]: Start difference. First operand 23999 states and 38645 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:27,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:27,419 INFO L93 Difference]: Finished difference Result 80916 states and 130285 transitions. [2021-12-14 15:42:27,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:42:27,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:27,615 INFO L225 Difference]: With dead ends: 80916 [2021-12-14 15:42:27,615 INFO L226 Difference]: Without dead ends: 59057 [2021-12-14 15:42:27,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:42:27,671 INFO L933 BasicCegarLoop]: 4864 mSDtfsCounter, 5398 mSDsluCounter, 17719 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5416 SdHoareTripleChecker+Valid, 22583 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:27,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5416 Valid, 22583 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-14 15:42:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59057 states. [2021-12-14 15:42:30,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59057 to 45632. [2021-12-14 15:42:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45632 states, 42141 states have (on average 1.5700149498113476) internal successors, (66162), 42272 states have internal predecessors, (66162), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2021-12-14 15:42:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45632 states to 45632 states and 73649 transitions. [2021-12-14 15:42:30,237 INFO L78 Accepts]: Start accepts. Automaton has 45632 states and 73649 transitions. Word has length 168 [2021-12-14 15:42:30,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:42:30,237 INFO L470 AbstractCegarLoop]: Abstraction has 45632 states and 73649 transitions. [2021-12-14 15:42:30,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 45632 states and 73649 transitions. [2021-12-14 15:42:30,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 15:42:30,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:42:30,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:42:30,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:42:30,259 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:42:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:42:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1475245797, now seen corresponding path program 1 times [2021-12-14 15:42:30,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:42:30,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551854596] [2021-12-14 15:42:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:42:30,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:42:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:42:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 15:42:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 15:42:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-14 15:42:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-14 15:42:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:42:30,366 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 15:42:30,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:42:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551854596] [2021-12-14 15:42:30,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551854596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:42:30,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:42:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:42:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077752637] [2021-12-14 15:42:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:42:30,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:42:30,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:42:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:42:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:42:30,368 INFO L87 Difference]: Start difference. First operand 45632 states and 73649 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 15:42:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:42:41,814 INFO L93 Difference]: Finished difference Result 179603 states and 289741 transitions. [2021-12-14 15:42:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:42:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 168 [2021-12-14 15:42:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:42:42,478 INFO L225 Difference]: With dead ends: 179603 [2021-12-14 15:42:42,478 INFO L226 Difference]: Without dead ends: 136111 [2021-12-14 15:42:42,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:42:42,573 INFO L933 BasicCegarLoop]: 4857 mSDtfsCounter, 5844 mSDsluCounter, 17711 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5874 SdHoareTripleChecker+Valid, 22568 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:42:42,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5874 Valid, 22568 Invalid, 2825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 15:42:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136111 states.