./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.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 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:07:20,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:07:20,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:07:20,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:07:20,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:07:20,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:07:20,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:07:20,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:07:20,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:07:20,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:07:20,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:07:20,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:07:20,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:07:20,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:07:20,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:07:21,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:07:21,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:07:21,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:07:21,005 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:07:21,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:07:21,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:07:21,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:07:21,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:07:21,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:07:21,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:07:21,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:07:21,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:07:21,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:07:21,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:07:21,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:07:21,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:07:21,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:07:21,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:07:21,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:07:21,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:07:21,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:07:21,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:07:21,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:07:21,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:07:21,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:07:21,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:07:21,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:07:21,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:07:21,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:07:21,053 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:07:21,053 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:07:21,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:07:21,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:07:21,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:07:21,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:07:21,054 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:07:21,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:07:21,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:07:21,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:07:21,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:07:21,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:07:21,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:07:21,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:07:21,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:07:21,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:07:21,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:07:21,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:21,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:07:21,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:07:21,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:07:21,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:07:21,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:07:21,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:07:21,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:07:21,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:07:21,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:07:21,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38a1f42f3cb7a9f66fd0bd1b473ab60f2efbe0fc9c998d9f18da86c331297566 [2021-12-17 19:07:21,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:07:21,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:07:21,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:07:21,327 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:07:21,328 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:07:21,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2021-12-17 19:07:21,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d331ddcf8/dec440ea64674c7a823102d1b6ce01b5/FLAGff2ac7284 [2021-12-17 19:07:22,116 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:07:22,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c [2021-12-17 19:07:22,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d331ddcf8/dec440ea64674c7a823102d1b6ce01b5/FLAGff2ac7284 [2021-12-17 19:07:22,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d331ddcf8/dec440ea64674c7a823102d1b6ce01b5 [2021-12-17 19:07:22,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:07:22,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:07:22,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:22,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:07:22,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:07:22,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:22" (1/1) ... [2021-12-17 19:07:22,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad4ce29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:22, skipping insertion in model container [2021-12-17 19:07:22,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:22" (1/1) ... [2021-12-17 19:07:22,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:07:22,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:07:23,894 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2021-12-17 19:07:23,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2021-12-17 19:07:24,144 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:24,157 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:07:24,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[380593,380606] [2021-12-17 19:07:24,743 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.14.cil.c[383339,383352] [2021-12-17 19:07:24,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:24,822 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:07:24,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24 WrapperNode [2021-12-17 19:07:24,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:24,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:24,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:07:24,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:07:24,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:24,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,156 INFO L137 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13202 [2021-12-17 19:07:25,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:25,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:07:25,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:07:25,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:07:25,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,214 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:07:25,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:07:25,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:07:25,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:07:25,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (1/1) ... [2021-12-17 19:07:25,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:25,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:07:25,653 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) [2021-12-17 19:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:07:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:07:25,679 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:07:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 19:07:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 19:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:07:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:07:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:07:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:07:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:07:25,687 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 [2021-12-17 19:07:25,831 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:07:25,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:07:30,770 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:07:30,791 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:07:30,792 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-17 19:07:30,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:30 BoogieIcfgContainer [2021-12-17 19:07:30,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:07:30,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:07:30,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:07:30,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:07:30,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:07:22" (1/3) ... [2021-12-17 19:07:30,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83f5214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:30, skipping insertion in model container [2021-12-17 19:07:30,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:24" (2/3) ... [2021-12-17 19:07:30,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@83f5214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:30, skipping insertion in model container [2021-12-17 19:07:30,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:30" (3/3) ... [2021-12-17 19:07:30,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.14.cil.c [2021-12-17 19:07:30,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:07:30,805 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:07:30,859 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:07:30,881 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 [2021-12-17 19:07:30,881 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:07:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-17 19:07:30,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:30,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:30,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:30,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:30,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:30,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1261108038, now seen corresponding path program 1 times [2021-12-17 19:07:30,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:30,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083829421] [2021-12-17 19:07:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:30,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:31,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:31,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083829421] [2021-12-17 19:07:31,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083829421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:31,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:31,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:31,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307344446] [2021-12-17 19:07:31,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:31,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:31,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:31,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:31,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:31,486 INFO L87 Difference]: Start difference. First operand has 2571 states, 2533 states have (on average 1.843268851164627) internal successors, (4669), 2538 states have internal predecessors, (4669), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:32,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:32,843 INFO L93 Difference]: Finished difference Result 5277 states and 9684 transitions. [2021-12-17 19:07:32,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:32,862 INFO L225 Difference]: With dead ends: 5277 [2021-12-17 19:07:32,862 INFO L226 Difference]: Without dead ends: 2645 [2021-12-17 19:07:32,868 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 [2021-12-17 19:07:32,870 INFO L933 BasicCegarLoop]: 4691 mSDtfsCounter, 1044 mSDsluCounter, 12495 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 17186 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:32,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 17186 Invalid, 767 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:07:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-17 19:07:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-17 19:07:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8265099310903932) internal successors, (4506), 2470 states have internal predecessors, (4506), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 19:07:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4560 transitions. [2021-12-17 19:07:32,957 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4560 transitions. Word has length 179 [2021-12-17 19:07:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:32,957 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4560 transitions. [2021-12-17 19:07:32,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4560 transitions. [2021-12-17 19:07:32,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:32,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:32,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:32,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:07:32,964 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1530760952, now seen corresponding path program 1 times [2021-12-17 19:07:32,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371221593] [2021-12-17 19:07:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:32,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:33,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:33,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371221593] [2021-12-17 19:07:33,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371221593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:33,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:33,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:33,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282123209] [2021-12-17 19:07:33,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:33,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:33,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:33,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:33,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:33,097 INFO L87 Difference]: Start difference. First operand 2503 states and 4560 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:34,454 INFO L93 Difference]: Finished difference Result 3012 states and 5382 transitions. [2021-12-17 19:07:34,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:34,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:34,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:34,463 INFO L225 Difference]: With dead ends: 3012 [2021-12-17 19:07:34,463 INFO L226 Difference]: Without dead ends: 2645 [2021-12-17 19:07:34,465 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 [2021-12-17 19:07:34,466 INFO L933 BasicCegarLoop]: 4621 mSDtfsCounter, 1030 mSDsluCounter, 12292 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 16913 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:34,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 16913 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:34,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-12-17 19:07:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2503. [2021-12-17 19:07:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2467 states have (on average 1.8261045804620997) internal successors, (4505), 2470 states have internal predecessors, (4505), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-12-17 19:07:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4559 transitions. [2021-12-17 19:07:34,514 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4559 transitions. Word has length 179 [2021-12-17 19:07:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:34,514 INFO L470 AbstractCegarLoop]: Abstraction has 2503 states and 4559 transitions. [2021-12-17 19:07:34,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4559 transitions. [2021-12-17 19:07:34,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:34,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:34,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:34,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:07:34,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:34,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:34,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2101032758, now seen corresponding path program 1 times [2021-12-17 19:07:34,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:34,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597479964] [2021-12-17 19:07:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:34,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:34,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597479964] [2021-12-17 19:07:34,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597479964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:34,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:34,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:07:34,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962256580] [2021-12-17 19:07:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:34,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:07:34,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:07:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:07:34,651 INFO L87 Difference]: Start difference. First operand 2503 states and 4559 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:36,953 INFO L93 Difference]: Finished difference Result 3529 states and 6222 transitions. [2021-12-17 19:07:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:07:36,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:36,966 INFO L225 Difference]: With dead ends: 3529 [2021-12-17 19:07:36,966 INFO L226 Difference]: Without dead ends: 3167 [2021-12-17 19:07:36,968 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 [2021-12-17 19:07:36,968 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 5521 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5540 SdHoareTripleChecker+Valid, 17573 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:36,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5540 Valid, 17573 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 19:07:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-12-17 19:07:37,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 2882. [2021-12-17 19:07:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2818 states have (on average 1.798083747338538) internal successors, (5067), 2822 states have internal predecessors, (5067), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-12-17 19:07:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 5166 transitions. [2021-12-17 19:07:37,074 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 5166 transitions. Word has length 179 [2021-12-17 19:07:37,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:37,075 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 5166 transitions. [2021-12-17 19:07:37,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 5166 transitions. [2021-12-17 19:07:37,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:37,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:37,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:37,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:07:37,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:37,078 INFO L85 PathProgramCache]: Analyzing trace with hash 808194758, now seen corresponding path program 1 times [2021-12-17 19:07:37,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:37,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445124282] [2021-12-17 19:07:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:37,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:37,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:37,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445124282] [2021-12-17 19:07:37,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445124282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:37,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:37,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:37,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450619527] [2021-12-17 19:07:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:37,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:37,250 INFO L87 Difference]: Start difference. First operand 2882 states and 5166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:40,328 INFO L93 Difference]: Finished difference Result 4448 states and 7708 transitions. [2021-12-17 19:07:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:07:40,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:40,358 INFO L225 Difference]: With dead ends: 4448 [2021-12-17 19:07:40,360 INFO L226 Difference]: Without dead ends: 3707 [2021-12-17 19:07:40,363 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 [2021-12-17 19:07:40,372 INFO L933 BasicCegarLoop]: 4980 mSDtfsCounter, 5549 mSDsluCounter, 17815 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5568 SdHoareTripleChecker+Valid, 22795 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:40,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5568 Valid, 22795 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 19:07:40,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2021-12-17 19:07:40,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 3234. [2021-12-17 19:07:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3142 states have (on average 1.7743475493316359) internal successors, (5575), 3147 states have internal predecessors, (5575), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2021-12-17 19:07:40,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 5718 transitions. [2021-12-17 19:07:40,562 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 5718 transitions. Word has length 179 [2021-12-17 19:07:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:40,567 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 5718 transitions. [2021-12-17 19:07:40,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:40,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 5718 transitions. [2021-12-17 19:07:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:40,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:40,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:40,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:07:40,571 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -961276856, now seen corresponding path program 1 times [2021-12-17 19:07:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:40,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479838396] [2021-12-17 19:07:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:40,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:40,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:40,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:40,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479838396] [2021-12-17 19:07:40,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479838396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:40,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:40,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:40,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578426940] [2021-12-17 19:07:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:40,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:40,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:40,710 INFO L87 Difference]: Start difference. First operand 3234 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:43,572 INFO L93 Difference]: Finished difference Result 5803 states and 9880 transitions. [2021-12-17 19:07:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:07:43,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:43,589 INFO L225 Difference]: With dead ends: 5803 [2021-12-17 19:07:43,590 INFO L226 Difference]: Without dead ends: 4710 [2021-12-17 19:07:43,595 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 [2021-12-17 19:07:43,596 INFO L933 BasicCegarLoop]: 4717 mSDtfsCounter, 5660 mSDsluCounter, 17150 mSDsCounter, 0 mSdLazyCounter, 2725 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5679 SdHoareTripleChecker+Valid, 21867 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:43,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5679 Valid, 21867 Invalid, 2848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 2725 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 19:07:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4710 states. [2021-12-17 19:07:43,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4710 to 3939. [2021-12-17 19:07:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3939 states, 3791 states have (on average 1.738855183328937) internal successors, (6592), 3798 states have internal predecessors, (6592), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2021-12-17 19:07:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3939 states to 3939 states and 6827 transitions. [2021-12-17 19:07:43,729 INFO L78 Accepts]: Start accepts. Automaton has 3939 states and 6827 transitions. Word has length 179 [2021-12-17 19:07:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:43,729 INFO L470 AbstractCegarLoop]: Abstraction has 3939 states and 6827 transitions. [2021-12-17 19:07:43,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3939 states and 6827 transitions. [2021-12-17 19:07:43,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:43,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:43,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:43,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:07:43,733 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1572545914, now seen corresponding path program 1 times [2021-12-17 19:07:43,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:43,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477920367] [2021-12-17 19:07:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:43,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:43,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:43,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477920367] [2021-12-17 19:07:43,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477920367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:43,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:43,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:43,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839630856] [2021-12-17 19:07:43,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:43,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:43,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:43,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:43,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:43,878 INFO L87 Difference]: Start difference. First operand 3939 states and 6827 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:46,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:46,753 INFO L93 Difference]: Finished difference Result 8408 states and 14029 transitions. [2021-12-17 19:07:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:07:46,754 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:46,815 INFO L225 Difference]: With dead ends: 8408 [2021-12-17 19:07:46,830 INFO L226 Difference]: Without dead ends: 6610 [2021-12-17 19:07:46,837 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 [2021-12-17 19:07:46,839 INFO L933 BasicCegarLoop]: 4968 mSDtfsCounter, 5544 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5563 SdHoareTripleChecker+Valid, 22779 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:46,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5563 Valid, 22779 Invalid, 3160 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 19:07:46,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2021-12-17 19:07:46,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 5350. [2021-12-17 19:07:46,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5090 states have (on average 1.694695481335953) internal successors, (8626), 5101 states have internal predecessors, (8626), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2021-12-17 19:07:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 9051 transitions. [2021-12-17 19:07:46,999 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 9051 transitions. Word has length 179 [2021-12-17 19:07:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:47,000 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 9051 transitions. [2021-12-17 19:07:47,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 9051 transitions. [2021-12-17 19:07:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:47,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:47,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:47,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:07:47,003 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:47,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1317229704, now seen corresponding path program 1 times [2021-12-17 19:07:47,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:47,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774504844] [2021-12-17 19:07:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:47,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:47,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774504844] [2021-12-17 19:07:47,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774504844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:47,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:47,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:47,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803282306] [2021-12-17 19:07:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:47,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:47,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:47,152 INFO L87 Difference]: Start difference. First operand 5350 states and 9051 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:50,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:50,385 INFO L93 Difference]: Finished difference Result 13610 states and 22331 transitions. [2021-12-17 19:07:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:07:50,385 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:50,413 INFO L225 Difference]: With dead ends: 13610 [2021-12-17 19:07:50,413 INFO L226 Difference]: Without dead ends: 10401 [2021-12-17 19:07:50,423 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 [2021-12-17 19:07:50,424 INFO L933 BasicCegarLoop]: 4960 mSDtfsCounter, 5539 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3055 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:50,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5558 Valid, 22771 Invalid, 3141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3055 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-17 19:07:50,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-12-17 19:07:50,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 8186. [2021-12-17 19:07:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8186 states, 7702 states have (on average 1.6512594131394442) internal successors, (12718), 7721 states have internal predecessors, (12718), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2021-12-17 19:07:50,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8186 states to 8186 states and 13541 transitions. [2021-12-17 19:07:50,704 INFO L78 Accepts]: Start accepts. Automaton has 8186 states and 13541 transitions. Word has length 179 [2021-12-17 19:07:50,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:50,704 INFO L470 AbstractCegarLoop]: Abstraction has 8186 states and 13541 transitions. [2021-12-17 19:07:50,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:50,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8186 states and 13541 transitions. [2021-12-17 19:07:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:50,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:50,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:50,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:07:50,711 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:50,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:50,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1531156726, now seen corresponding path program 1 times [2021-12-17 19:07:50,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:50,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215343890] [2021-12-17 19:07:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:50,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:50,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:50,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215343890] [2021-12-17 19:07:50,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215343890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:50,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:50,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:50,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620348780] [2021-12-17 19:07:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:50,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:50,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:50,837 INFO L87 Difference]: Start difference. First operand 8186 states and 13541 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:53,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:53,711 INFO L93 Difference]: Finished difference Result 24032 states and 39027 transitions. [2021-12-17 19:07:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:07:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:53,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:53,772 INFO L225 Difference]: With dead ends: 24032 [2021-12-17 19:07:53,773 INFO L226 Difference]: Without dead ends: 17987 [2021-12-17 19:07:53,794 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 [2021-12-17 19:07:53,794 INFO L933 BasicCegarLoop]: 4955 mSDtfsCounter, 5538 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3047 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5557 SdHoareTripleChecker+Valid, 22766 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:53,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5557 Valid, 22766 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3047 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 19:07:53,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-12-17 19:07:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 13871. [2021-12-17 19:07:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6168173738310534) internal successors, (20920), 12974 states have internal predecessors, (20920), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 19:07:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22593 transitions. [2021-12-17 19:07:54,455 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22593 transitions. Word has length 179 [2021-12-17 19:07:54,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:54,456 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22593 transitions. [2021-12-17 19:07:54,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22593 transitions. [2021-12-17 19:07:54,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:54,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:54,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:54,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:07:54,465 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:54,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:54,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1840643144, now seen corresponding path program 1 times [2021-12-17 19:07:54,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:54,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811837388] [2021-12-17 19:07:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:54,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:54,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:54,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:54,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811837388] [2021-12-17 19:07:54,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811837388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:54,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:54,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:54,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249891147] [2021-12-17 19:07:54,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:54,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:54,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:54,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:54,594 INFO L87 Difference]: Start difference. First operand 13871 states and 22593 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:56,701 INFO L93 Difference]: Finished difference Result 29968 states and 48786 transitions. [2021-12-17 19:07:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:56,701 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:56,743 INFO L225 Difference]: With dead ends: 29968 [2021-12-17 19:07:56,743 INFO L226 Difference]: Without dead ends: 18238 [2021-12-17 19:07:56,771 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 [2021-12-17 19:07:56,773 INFO L933 BasicCegarLoop]: 4597 mSDtfsCounter, 5089 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5109 SdHoareTripleChecker+Valid, 21378 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:56,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5109 Valid, 21378 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2021-12-17 19:07:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 13871. [2021-12-17 19:07:57,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6142669448952778) internal successors, (20887), 12974 states have internal predecessors, (20887), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 19:07:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22560 transitions. [2021-12-17 19:07:57,278 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22560 transitions. Word has length 179 [2021-12-17 19:07:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:57,278 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22560 transitions. [2021-12-17 19:07:57,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22560 transitions. [2021-12-17 19:07:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:07:57,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:57,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:57,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:07:57,287 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:57,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:57,289 INFO L85 PathProgramCache]: Analyzing trace with hash -2068461750, now seen corresponding path program 1 times [2021-12-17 19:07:57,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:57,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781071392] [2021-12-17 19:07:57,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:57,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:07:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:07:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:07:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:07:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:57,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781071392] [2021-12-17 19:07:57,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781071392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:57,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:57,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:57,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456280128] [2021-12-17 19:07:57,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:57,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:57,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:57,411 INFO L87 Difference]: Start difference. First operand 13871 states and 22560 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:07:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:59,409 INFO L93 Difference]: Finished difference Result 29934 states and 48619 transitions. [2021-12-17 19:07:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:59,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:07:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:59,478 INFO L225 Difference]: With dead ends: 29934 [2021-12-17 19:07:59,479 INFO L226 Difference]: Without dead ends: 18204 [2021-12-17 19:07:59,504 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 [2021-12-17 19:07:59,504 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 5087 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5107 SdHoareTripleChecker+Valid, 21374 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:59,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5107 Valid, 21374 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1465 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:59,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-12-17 19:08:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 13871. [2021-12-17 19:08:00,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 12939 states have (on average 1.6117165159595024) internal successors, (20854), 12974 states have internal predecessors, (20854), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2021-12-17 19:08:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 22527 transitions. [2021-12-17 19:08:00,112 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 22527 transitions. Word has length 179 [2021-12-17 19:08:00,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:00,112 INFO L470 AbstractCegarLoop]: Abstraction has 13871 states and 22527 transitions. [2021-12-17 19:08:00,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:00,112 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 22527 transitions. [2021-12-17 19:08:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:00,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:00,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:00,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:08:00,119 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:00,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1961858056, now seen corresponding path program 1 times [2021-12-17 19:08:00,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634407117] [2021-12-17 19:08:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:00,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:00,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:00,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634407117] [2021-12-17 19:08:00,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634407117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:00,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:00,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:00,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425159904] [2021-12-17 19:08:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:00,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:00,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:00,246 INFO L87 Difference]: Start difference. First operand 13871 states and 22527 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:04,193 INFO L93 Difference]: Finished difference Result 44807 states and 72145 transitions. [2021-12-17 19:08:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:08:04,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:04,287 INFO L225 Difference]: With dead ends: 44807 [2021-12-17 19:08:04,287 INFO L226 Difference]: Without dead ends: 33077 [2021-12-17 19:08:04,318 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 [2021-12-17 19:08:04,318 INFO L933 BasicCegarLoop]: 4938 mSDtfsCounter, 5523 mSDsluCounter, 17811 mSDsCounter, 0 mSdLazyCounter, 3001 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5542 SdHoareTripleChecker+Valid, 22749 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:04,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5542 Valid, 22749 Invalid, 3087 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 3001 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 19:08:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33077 states. [2021-12-17 19:08:05,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33077 to 25338. [2021-12-17 19:08:05,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5868991918332624) internal successors, (37308), 23577 states have internal predecessors, (37308), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 19:08:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40843 transitions. [2021-12-17 19:08:05,535 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40843 transitions. Word has length 179 [2021-12-17 19:08:05,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:05,536 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40843 transitions. [2021-12-17 19:08:05,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40843 transitions. [2021-12-17 19:08:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:05,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:05,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:05,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:08:05,548 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:05,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash -401983606, now seen corresponding path program 1 times [2021-12-17 19:08:05,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718700235] [2021-12-17 19:08:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:05,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:05,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718700235] [2021-12-17 19:08:05,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718700235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:05,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:05,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:05,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72737075] [2021-12-17 19:08:05,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:05,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:05,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:05,687 INFO L87 Difference]: Start difference. First operand 25338 states and 40843 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:08,516 INFO L93 Difference]: Finished difference Result 56736 states and 92030 transitions. [2021-12-17 19:08:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:08,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:08,674 INFO L225 Difference]: With dead ends: 56736 [2021-12-17 19:08:08,675 INFO L226 Difference]: Without dead ends: 33539 [2021-12-17 19:08:08,768 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 [2021-12-17 19:08:08,769 INFO L933 BasicCegarLoop]: 4554 mSDtfsCounter, 5148 mSDsluCounter, 16780 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5168 SdHoareTripleChecker+Valid, 21334 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:08,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5168 Valid, 21334 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:08:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33539 states. [2021-12-17 19:08:10,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33539 to 25338. [2021-12-17 19:08:10,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5841344108889834) internal successors, (37243), 23577 states have internal predecessors, (37243), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 19:08:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40778 transitions. [2021-12-17 19:08:10,116 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40778 transitions. Word has length 179 [2021-12-17 19:08:10,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:10,117 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40778 transitions. [2021-12-17 19:08:10,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40778 transitions. [2021-12-17 19:08:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:10,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:10,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:10,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:08:10,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:10,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:10,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1725162552, now seen corresponding path program 1 times [2021-12-17 19:08:10,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:10,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531887316] [2021-12-17 19:08:10,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:10,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:10,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:10,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531887316] [2021-12-17 19:08:10,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531887316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:10,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:10,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:10,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91334457] [2021-12-17 19:08:10,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:10,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:10,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:10,246 INFO L87 Difference]: Start difference. First operand 25338 states and 40778 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:13,304 INFO L93 Difference]: Finished difference Result 56670 states and 91703 transitions. [2021-12-17 19:08:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:13,392 INFO L225 Difference]: With dead ends: 56670 [2021-12-17 19:08:13,392 INFO L226 Difference]: Without dead ends: 33473 [2021-12-17 19:08:13,446 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 [2021-12-17 19:08:13,457 INFO L933 BasicCegarLoop]: 4580 mSDtfsCounter, 5086 mSDsluCounter, 16781 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5106 SdHoareTripleChecker+Valid, 21361 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:13,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5106 Valid, 21361 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33473 states. [2021-12-17 19:08:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33473 to 25338. [2021-12-17 19:08:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5813696299447044) internal successors, (37178), 23577 states have internal predecessors, (37178), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 19:08:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40713 transitions. [2021-12-17 19:08:15,158 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40713 transitions. Word has length 179 [2021-12-17 19:08:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:15,159 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40713 transitions. [2021-12-17 19:08:15,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40713 transitions. [2021-12-17 19:08:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:15,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:15,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:15,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 19:08:15,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:15,170 INFO L85 PathProgramCache]: Analyzing trace with hash 171816906, now seen corresponding path program 1 times [2021-12-17 19:08:15,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:15,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485567826] [2021-12-17 19:08:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:15,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:15,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485567826] [2021-12-17 19:08:15,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485567826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:15,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:15,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:15,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144957676] [2021-12-17 19:08:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:15,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:15,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:15,299 INFO L87 Difference]: Start difference. First operand 25338 states and 40713 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:18,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:18,549 INFO L93 Difference]: Finished difference Result 56538 states and 91244 transitions. [2021-12-17 19:08:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:18,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:18,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:18,634 INFO L225 Difference]: With dead ends: 56538 [2021-12-17 19:08:18,635 INFO L226 Difference]: Without dead ends: 33341 [2021-12-17 19:08:18,677 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 [2021-12-17 19:08:18,677 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5081 mSDsluCounter, 16779 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 21353 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:18,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5101 Valid, 21353 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:08:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33341 states. [2021-12-17 19:08:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33341 to 25338. [2021-12-17 19:08:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25338 states, 23510 states have (on average 1.5786048490004254) internal successors, (37113), 23577 states have internal predecessors, (37113), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2021-12-17 19:08:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25338 states to 25338 states and 40648 transitions. [2021-12-17 19:08:20,135 INFO L78 Accepts]: Start accepts. Automaton has 25338 states and 40648 transitions. Word has length 179 [2021-12-17 19:08:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:20,136 INFO L470 AbstractCegarLoop]: Abstraction has 25338 states and 40648 transitions. [2021-12-17 19:08:20,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 25338 states and 40648 transitions. [2021-12-17 19:08:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:20,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:20,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:20,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 19:08:20,147 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:20,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 598371404, now seen corresponding path program 1 times [2021-12-17 19:08:20,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:20,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336732968] [2021-12-17 19:08:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:20,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:20,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:20,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336732968] [2021-12-17 19:08:20,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336732968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:20,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:20,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:20,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276843109] [2021-12-17 19:08:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:20,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:20,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:20,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:20,280 INFO L87 Difference]: Start difference. First operand 25338 states and 40648 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:28,172 INFO L93 Difference]: Finished difference Result 96792 states and 154353 transitions. [2021-12-17 19:08:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:08:28,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:28,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:28,391 INFO L225 Difference]: With dead ends: 96792 [2021-12-17 19:08:28,391 INFO L226 Difference]: Without dead ends: 73595 [2021-12-17 19:08:28,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:08:28,456 INFO L933 BasicCegarLoop]: 5094 mSDtfsCounter, 5612 mSDsluCounter, 17800 mSDsCounter, 0 mSdLazyCounter, 3464 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5630 SdHoareTripleChecker+Valid, 22894 SdHoareTripleChecker+Invalid, 3555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:28,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5630 Valid, 22894 Invalid, 3555 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 3464 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-17 19:08:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73595 states. [2021-12-17 19:08:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73595 to 47887. [2021-12-17 19:08:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47887 states, 44331 states have (on average 1.5614130066996008) internal successors, (69219), 44462 states have internal predecessors, (69219), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 19:08:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47887 states to 47887 states and 76836 transitions. [2021-12-17 19:08:31,220 INFO L78 Accepts]: Start accepts. Automaton has 47887 states and 76836 transitions. Word has length 179 [2021-12-17 19:08:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:31,220 INFO L470 AbstractCegarLoop]: Abstraction has 47887 states and 76836 transitions. [2021-12-17 19:08:31,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 47887 states and 76836 transitions. [2021-12-17 19:08:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:31,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:31,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:31,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 19:08:31,236 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash 57941898, now seen corresponding path program 1 times [2021-12-17 19:08:31,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:31,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48342485] [2021-12-17 19:08:31,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:31,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:31,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48342485] [2021-12-17 19:08:31,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48342485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:31,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:31,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:31,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107777255] [2021-12-17 19:08:31,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:31,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:31,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:31,360 INFO L87 Difference]: Start difference. First operand 47887 states and 76836 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:36,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:36,545 INFO L93 Difference]: Finished difference Result 108736 states and 176331 transitions. [2021-12-17 19:08:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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 179 [2021-12-17 19:08:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:36,730 INFO L225 Difference]: With dead ends: 108736 [2021-12-17 19:08:36,731 INFO L226 Difference]: Without dead ends: 62990 [2021-12-17 19:08:36,821 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 [2021-12-17 19:08:36,823 INFO L933 BasicCegarLoop]: 4567 mSDtfsCounter, 5247 mSDsluCounter, 12623 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 17190 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:36,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5267 Valid, 17190 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:08:36,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62990 states. [2021-12-17 19:08:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62990 to 47887. [2021-12-17 19:08:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47887 states, 44331 states have (on average 1.5585030791094268) internal successors, (69090), 44462 states have internal predecessors, (69090), 2652 states have call successors, (2652), 775 states have call predecessors, (2652), 902 states have return successors, (4965), 2777 states have call predecessors, (4965), 2650 states have call successors, (4965) [2021-12-17 19:08:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47887 states to 47887 states and 76707 transitions. [2021-12-17 19:08:39,946 INFO L78 Accepts]: Start accepts. Automaton has 47887 states and 76707 transitions. Word has length 179 [2021-12-17 19:08:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:39,947 INFO L470 AbstractCegarLoop]: Abstraction has 47887 states and 76707 transitions. [2021-12-17 19:08:39,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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) [2021-12-17 19:08:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 47887 states and 76707 transitions. [2021-12-17 19:08:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-17 19:08:39,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:39,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:39,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 19:08:39,962 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash -98038644, now seen corresponding path program 1 times [2021-12-17 19:08:39,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:39,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103425706] [2021-12-17 19:08:39,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:39,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 19:08:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-17 19:08:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 19:08:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-17 19:08:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:40,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:40,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103425706] [2021-12-17 19:08:40,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103425706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:40,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:40,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:08:40,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796651253] [2021-12-17 19:08:40,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:40,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:08:40,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:40,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:08:40,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:08:40,124 INFO L87 Difference]: Start difference. First operand 47887 states and 76707 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (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)