./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.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_label47+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 099a6a574a6046de5acacffb386ced7bed15faed2715ea5faa9de06eb0c5ca5a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:01:48,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:01:48,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:01:48,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:01:48,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:01:48,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:01:48,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:01:48,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:01:48,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:01:48,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:01:48,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:01:48,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:01:48,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:01:48,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:01:48,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:01:48,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:01:48,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:01:48,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:01:48,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:01:48,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:01:48,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:01:48,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:01:48,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:01:48,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:01:48,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:01:48,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:01:48,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:01:48,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:01:48,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:01:48,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:01:48,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:01:48,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:01:48,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:01:48,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:01:48,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:01:48,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:01:48,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:01:48,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:01:48,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:01:48,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:01:48,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:01:48,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:01:48,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:01:48,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:01:48,918 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:01:48,918 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:01:48,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:01:48,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:01:48,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:01:48,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:01:48,920 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:01:48,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:01:48,921 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:01:48,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:01:48,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:01:48,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:01:48,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:01:48,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:01:48,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:01:48,923 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:01:48,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:01:48,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:01:48,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:01:48,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:01:48,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:01:48,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:01:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:48,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:01:48,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:01:48,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:01:48,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:01:48,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:01:48,927 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:01:48,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:01:48,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:01:48,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:01:48,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 099a6a574a6046de5acacffb386ced7bed15faed2715ea5faa9de06eb0c5ca5a [2021-12-16 02:01:49,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:01:49,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:01:49,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:01:49,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:01:49,173 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:01:49,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c [2021-12-16 02:01:49,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd4c8b1f/2ff0ba5629e144bb8b6273a5588d5aac/FLAG3968ab362 [2021-12-16 02:01:50,085 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:01:50,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c [2021-12-16 02:01:50,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd4c8b1f/2ff0ba5629e144bb8b6273a5588d5aac/FLAG3968ab362 [2021-12-16 02:01:50,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd4c8b1f/2ff0ba5629e144bb8b6273a5588d5aac [2021-12-16 02:01:50,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:01:50,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:01:50,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:50,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:01:50,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:01:50,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:50" (1/1) ... [2021-12-16 02:01:50,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54b43540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:50, skipping insertion in model container [2021-12-16 02:01:50,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:50" (1/1) ... [2021-12-16 02:01:50,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:01:50,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:01:52,043 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[377612,377625] [2021-12-16 02:01:52,078 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[383339,383352] [2021-12-16 02:01:52,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:52,293 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:01:53,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[377612,377625] [2021-12-16 02:01:53,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label47+token_ring.07.cil-1.c[383339,383352] [2021-12-16 02:01:53,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:53,165 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:01:53,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53 WrapperNode [2021-12-16 02:01:53,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:53,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:53,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:01:53,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:01:53,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,672 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-16 02:01:53,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:53,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:01:53,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:01:53,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:01:53,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:53,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:54,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:54,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:54,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:01:54,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:01:54,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:01:54,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:01:54,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (1/1) ... [2021-12-16 02:01:54,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:54,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:01:54,165 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) [2021-12-16 02:01:54,268 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 [2021-12-16 02:01:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:01:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:01:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:01:54,319 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:01:54,319 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:01:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:01:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:01:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:01:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:01:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:01:54,320 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:01:54,320 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:01:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:01:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:01:54,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:01:54,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:01:54,516 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:01:54,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:02:00,397 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:02:00,428 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:02:00,428 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-16 02:02:00,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:00 BoogieIcfgContainer [2021-12-16 02:02:00,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:02:00,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:02:00,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:02:00,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:02:00,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:01:50" (1/3) ... [2021-12-16 02:02:00,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb2cc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:00, skipping insertion in model container [2021-12-16 02:02:00,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:53" (2/3) ... [2021-12-16 02:02:00,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb2cc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:02:00, skipping insertion in model container [2021-12-16 02:02:00,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:02:00" (3/3) ... [2021-12-16 02:02:00,440 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.07.cil-1.c [2021-12-16 02:02:00,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:02:00,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:02:00,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:02:00,518 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 [2021-12-16 02:02:00,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:02:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 02:02:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:00,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:00,594 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] [2021-12-16 02:02:00,595 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:00,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:00,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-16 02:02:00,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377505934] [2021-12-16 02:02:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:00,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:01,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:01,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:01,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:01,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377505934] [2021-12-16 02:02:01,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377505934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:01,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:01,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:02:01,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123183627] [2021-12-16 02:02:01,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:01,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:02:01,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:02:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:02:01,093 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:02,258 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-16 02:02:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:02:02,261 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:02,290 INFO L225 Difference]: With dead ends: 4955 [2021-12-16 02:02:02,290 INFO L226 Difference]: Without dead ends: 2460 [2021-12-16 02:02:02,298 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 [2021-12-16 02:02:02,301 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:02,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:02:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-16 02:02:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-16 02:02:02,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-16 02:02:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-16 02:02:02,443 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-16 02:02:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:02,444 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-16 02:02:02,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-16 02:02:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:02,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:02,454 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] [2021-12-16 02:02:02,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:02:02,455 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-16 02:02:02,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:02,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403402402] [2021-12-16 02:02:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:02,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:02,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403402402] [2021-12-16 02:02:02,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403402402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:02,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:02,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:02:02,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778158692] [2021-12-16 02:02:02,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:02,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:02:02,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:02:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:02:02,615 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:04,457 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-16 02:02:04,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:02:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:04,506 INFO L225 Difference]: With dead ends: 3029 [2021-12-16 02:02:04,519 INFO L226 Difference]: Without dead ends: 2792 [2021-12-16 02:02:04,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:04,525 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:04,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-16 02:02:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-16 02:02:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-16 02:02:04,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-16 02:02:04,680 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-16 02:02:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:04,681 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-16 02:02:04,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-16 02:02:04,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:04,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:04,684 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] [2021-12-16 02:02:04,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:02:04,685 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-16 02:02:04,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:04,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355967340] [2021-12-16 02:02:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:04,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:04,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:04,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355967340] [2021-12-16 02:02:04,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355967340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:04,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:04,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:04,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136194449] [2021-12-16 02:02:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:04,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:04,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:04,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:04,842 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:07,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:07,142 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-16 02:02:07,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:02:07,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:07,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:07,162 INFO L225 Difference]: With dead ends: 3617 [2021-12-16 02:02:07,162 INFO L226 Difference]: Without dead ends: 3134 [2021-12-16 02:02:07,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:02:07,175 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21723 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:07,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21723 Invalid, 2010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 02:02:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-16 02:02:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-16 02:02:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-16 02:02:07,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-16 02:02:07,302 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-16 02:02:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:07,303 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-16 02:02:07,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:07,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-16 02:02:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:07,306 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:07,306 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] [2021-12-16 02:02:07,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:02:07,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-16 02:02:07,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:07,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013901120] [2021-12-16 02:02:07,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:07,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:07,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:07,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013901120] [2021-12-16 02:02:07,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013901120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:07,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:07,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:07,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051297520] [2021-12-16 02:02:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:07,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:07,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:07,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:07,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:07,456 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:09,577 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-16 02:02:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:02:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:09,597 INFO L225 Difference]: With dead ends: 4483 [2021-12-16 02:02:09,598 INFO L226 Difference]: Without dead ends: 3771 [2021-12-16 02:02:09,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:02:09,614 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1951 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21711 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:09,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21711 Invalid, 2019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1951 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:02:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-16 02:02:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-16 02:02:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-16 02:02:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-16 02:02:09,785 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-16 02:02:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:09,785 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-16 02:02:09,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-16 02:02:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:09,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:09,793 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] [2021-12-16 02:02:09,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:02:09,794 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:09,795 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-16 02:02:09,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:09,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351347536] [2021-12-16 02:02:09,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:09,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:09,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:09,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351347536] [2021-12-16 02:02:09,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351347536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:09,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:09,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:09,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875823734] [2021-12-16 02:02:09,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:09,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:09,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:09,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:09,929 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:11,902 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-16 02:02:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:02:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:11,924 INFO L225 Difference]: With dead ends: 6150 [2021-12-16 02:02:11,925 INFO L226 Difference]: Without dead ends: 4979 [2021-12-16 02:02:11,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:02:11,932 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21707 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:11,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21707 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-16 02:02:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-16 02:02:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-16 02:02:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-16 02:02:12,157 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-16 02:02:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:12,157 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-16 02:02:12,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-16 02:02:12,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:12,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:12,161 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] [2021-12-16 02:02:12,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:02:12,161 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-16 02:02:12,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:12,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028584955] [2021-12-16 02:02:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:12,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:12,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:12,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028584955] [2021-12-16 02:02:12,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028584955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:12,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:12,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:12,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667409778] [2021-12-16 02:02:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:12,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:12,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:12,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:12,276 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:14,278 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-16 02:02:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:02:14,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:14,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:14,312 INFO L225 Difference]: With dead ends: 9483 [2021-12-16 02:02:14,313 INFO L226 Difference]: Without dead ends: 7393 [2021-12-16 02:02:14,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:02:14,325 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21703 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:14,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21703 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-16 02:02:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-16 02:02:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-16 02:02:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-16 02:02:14,571 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-16 02:02:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:14,571 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-16 02:02:14,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-16 02:02:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:14,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:14,577 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] [2021-12-16 02:02:14,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:02:14,577 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-16 02:02:14,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578720506] [2021-12-16 02:02:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:14,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:14,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:14,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:14,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578720506] [2021-12-16 02:02:14,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578720506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:14,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:14,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:14,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248454960] [2021-12-16 02:02:14,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:14,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:14,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:14,706 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:16,714 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-16 02:02:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 02:02:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:16,760 INFO L225 Difference]: With dead ends: 16148 [2021-12-16 02:02:16,760 INFO L226 Difference]: Without dead ends: 12215 [2021-12-16 02:02:16,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 02:02:16,780 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21697 SdHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:16,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21697 Invalid, 2004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:02:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-16 02:02:17,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-16 02:02:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 02:02:17,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-16 02:02:17,259 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-16 02:02:17,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:17,260 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-16 02:02:17,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-16 02:02:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:17,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:17,282 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] [2021-12-16 02:02:17,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:02:17,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-16 02:02:17,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090861515] [2021-12-16 02:02:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:17,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090861515] [2021-12-16 02:02:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090861515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:17,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:17,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:17,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827390812] [2021-12-16 02:02:17,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:17,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:17,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:17,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:17,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:17,417 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:18,893 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-16 02:02:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:18,945 INFO L225 Difference]: With dead ends: 19942 [2021-12-16 02:02:18,946 INFO L226 Difference]: Without dead ends: 12310 [2021-12-16 02:02:18,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:18,976 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16707 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16707 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:02:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-16 02:02:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-16 02:02:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 02:02:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-16 02:02:19,416 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-16 02:02:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:19,416 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-16 02:02:19,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-16 02:02:19,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:19,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:19,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:19,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:02:19,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-16 02:02:19,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:19,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622228811] [2021-12-16 02:02:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:19,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:19,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:19,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:19,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622228811] [2021-12-16 02:02:19,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622228811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:19,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:19,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:19,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159310328] [2021-12-16 02:02:19,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:19,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:19,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:19,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:19,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:19,522 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:20,907 INFO L93 Difference]: Finished difference Result 19908 states and 32037 transitions. [2021-12-16 02:02:20,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:20,957 INFO L225 Difference]: With dead ends: 19908 [2021-12-16 02:02:20,957 INFO L226 Difference]: Without dead ends: 12276 [2021-12-16 02:02:20,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:20,983 INFO L933 BasicCegarLoop]: 4346 mSDtfsCounter, 4772 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4787 SdHoareTripleChecker+Valid, 16701 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:20,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4787 Valid, 16701 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 02:02:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2021-12-16 02:02:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 9768. [2021-12-16 02:02:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6070198822614683) internal successors, (14468), 9037 states have internal predecessors, (14468), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-16 02:02:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15809 transitions. [2021-12-16 02:02:21,418 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15809 transitions. Word has length 123 [2021-12-16 02:02:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:21,419 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15809 transitions. [2021-12-16 02:02:21,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15809 transitions. [2021-12-16 02:02:21,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:21,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:21,429 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] [2021-12-16 02:02:21,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:02:21,429 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:21,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-16 02:02:21,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:21,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232192823] [2021-12-16 02:02:21,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:21,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:21,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:21,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232192823] [2021-12-16 02:02:21,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232192823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:21,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:21,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:21,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134785517] [2021-12-16 02:02:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:21,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:21,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:21,568 INFO L87 Difference]: Start difference. First operand 9768 states and 15809 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:24,585 INFO L93 Difference]: Finished difference Result 32418 states and 51321 transitions. [2021-12-16 02:02:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:02:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:24,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:24,721 INFO L225 Difference]: With dead ends: 32418 [2021-12-16 02:02:24,721 INFO L226 Difference]: Without dead ends: 24786 [2021-12-16 02:02:24,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:02:24,756 INFO L933 BasicCegarLoop]: 4670 mSDtfsCounter, 4975 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 21771 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:24,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 21771 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 02:02:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24786 states. [2021-12-16 02:02:25,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24786 to 17038. [2021-12-16 02:02:25,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17038 states, 15569 states have (on average 1.5723553214721562) internal successors, (24480), 15635 states have internal predecessors, (24480), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-16 02:02:25,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27299 transitions. [2021-12-16 02:02:25,741 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27299 transitions. Word has length 123 [2021-12-16 02:02:25,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:25,741 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27299 transitions. [2021-12-16 02:02:25,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27299 transitions. [2021-12-16 02:02:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:25,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:25,754 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] [2021-12-16 02:02:25,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:02:25,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-16 02:02:25,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599802084] [2021-12-16 02:02:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:25,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:25,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:25,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599802084] [2021-12-16 02:02:25,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599802084] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:25,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:25,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:25,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870587913] [2021-12-16 02:02:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:25,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:25,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:25,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:25,878 INFO L87 Difference]: Start difference. First operand 17038 states and 27299 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:27,604 INFO L93 Difference]: Finished difference Result 36556 states and 58724 transitions. [2021-12-16 02:02:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:27,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:27,712 INFO L225 Difference]: With dead ends: 36556 [2021-12-16 02:02:27,712 INFO L226 Difference]: Without dead ends: 21654 [2021-12-16 02:02:27,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:27,763 INFO L933 BasicCegarLoop]: 4339 mSDtfsCounter, 4771 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16694 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:27,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16694 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 02:02:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21654 states. [2021-12-16 02:02:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21654 to 17038. [2021-12-16 02:02:28,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17038 states, 15569 states have (on average 1.5681803584045217) internal successors, (24415), 15635 states have internal predecessors, (24415), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-16 02:02:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17038 states to 17038 states and 27234 transitions. [2021-12-16 02:02:28,692 INFO L78 Accepts]: Start accepts. Automaton has 17038 states and 27234 transitions. Word has length 123 [2021-12-16 02:02:28,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:28,693 INFO L470 AbstractCegarLoop]: Abstraction has 17038 states and 27234 transitions. [2021-12-16 02:02:28,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:28,693 INFO L276 IsEmpty]: Start isEmpty. Operand 17038 states and 27234 transitions. [2021-12-16 02:02:28,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:28,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:28,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:28,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:02:28,709 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:28,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-16 02:02:28,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:28,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457469145] [2021-12-16 02:02:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:28,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:28,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:28,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:28,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457469145] [2021-12-16 02:02:28,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457469145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:28,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:28,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:28,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817875443] [2021-12-16 02:02:28,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:28,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:28,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:28,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:28,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:28,823 INFO L87 Difference]: Start difference. First operand 17038 states and 27234 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:32,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:32,478 INFO L93 Difference]: Finished difference Result 59560 states and 94345 transitions. [2021-12-16 02:02:32,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:02:32,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:32,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:32,665 INFO L225 Difference]: With dead ends: 59560 [2021-12-16 02:02:32,666 INFO L226 Difference]: Without dead ends: 44658 [2021-12-16 02:02:32,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 02:02:32,720 INFO L933 BasicCegarLoop]: 4552 mSDtfsCounter, 5079 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5101 SdHoareTripleChecker+Valid, 21656 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:32,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5101 Valid, 21656 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:02:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44658 states. [2021-12-16 02:02:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44658 to 31764. [2021-12-16 02:02:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31764 states, 28919 states have (on average 1.5462152909851654) internal successors, (44715), 29049 states have internal predecessors, (44715), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-16 02:02:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31764 states to 31764 states and 50912 transitions. [2021-12-16 02:02:34,492 INFO L78 Accepts]: Start accepts. Automaton has 31764 states and 50912 transitions. Word has length 123 [2021-12-16 02:02:34,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:34,492 INFO L470 AbstractCegarLoop]: Abstraction has 31764 states and 50912 transitions. [2021-12-16 02:02:34,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 31764 states and 50912 transitions. [2021-12-16 02:02:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-16 02:02:34,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:34,510 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] [2021-12-16 02:02:34,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:02:34,510 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-16 02:02:34,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:34,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568316489] [2021-12-16 02:02:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:34,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 02:02:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 02:02:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 02:02:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 02:02:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:34,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568316489] [2021-12-16 02:02:34,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568316489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:34,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:34,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:34,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128752971] [2021-12-16 02:02:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:34,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:34,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:34,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:34,628 INFO L87 Difference]: Start difference. First operand 31764 states and 50912 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:37,335 INFO L93 Difference]: Finished difference Result 69972 states and 113447 transitions. [2021-12-16 02:02:37,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:37,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-16 02:02:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:37,670 INFO L225 Difference]: With dead ends: 69972 [2021-12-16 02:02:37,670 INFO L226 Difference]: Without dead ends: 40344 [2021-12-16 02:02:37,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:37,743 INFO L933 BasicCegarLoop]: 4332 mSDtfsCounter, 4664 mSDsluCounter, 16442 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20774 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:37,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20774 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-16 02:02:37,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40344 states.