./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_label45+token_ring.11.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 88d274727136b53784890e6d1e1bf78dc0f4647c470f9c2edec85a87ad689472 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:38:06,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:38:06,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:38:06,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:38:06,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:38:06,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:38:06,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:38:06,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:38:06,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:38:06,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:38:06,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:38:06,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:38:06,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:38:06,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:38:06,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:38:06,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:38:06,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:38:06,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:38:06,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:38:06,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:38:06,811 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:38:06,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:38:06,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:38:06,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:38:06,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:38:06,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:38:06,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:38:06,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:38:06,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:38:06,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:38:06,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:38:06,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:38:06,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:38:06,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:38:06,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:38:06,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:38:06,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:38:06,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:38:06,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:38:06,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:38:06,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:38:06,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:38:06,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:38:06,865 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:38:06,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:38:06,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:38:06,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:38:06,867 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:38:06,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:38:06,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:38:06,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:38:06,868 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:38:06,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:38:06,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:38:06,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:38:06,871 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:38:06,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:38:06,871 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:38:06,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:38:06,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:38:06,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:38:06,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:38:06,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:38:06,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:38:06,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:38:06,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:38:06,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:38:06,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:38:06,873 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:38:06,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:38:06,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:38:06,874 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d274727136b53784890e6d1e1bf78dc0f4647c470f9c2edec85a87ad689472 [2022-07-22 19:38:07,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:38:07,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:38:07,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:38:07,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:38:07,135 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:38:07,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-07-22 19:38:07,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2b05c73/4b6fdaae1ac6400189e0b81264c5734b/FLAGaed31d36e [2022-07-22 19:38:07,999 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:38:08,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.11.cil-1.c [2022-07-22 19:38:08,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2b05c73/4b6fdaae1ac6400189e0b81264c5734b/FLAGaed31d36e [2022-07-22 19:38:08,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d2b05c73/4b6fdaae1ac6400189e0b81264c5734b [2022-07-22 19:38:08,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:38:08,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:38:08,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:38:08,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:38:08,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:38:08,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:38:08" (1/1) ... [2022-07-22 19:38:08,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e0fbe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:08, skipping insertion in model container [2022-07-22 19:38:08,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:38:08" (1/1) ... [2022-07-22 19:38:08,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:38:08,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:38:10,204 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_label45+token_ring.11.cil-1.c[380323,380336] [2022-07-22 19:38:10,230 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_label45+token_ring.11.cil-1.c[383339,383352] [2022-07-22 19:38:10,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:38:10,505 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:38:11,249 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_label45+token_ring.11.cil-1.c[380323,380336] [2022-07-22 19:38:11,256 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_label45+token_ring.11.cil-1.c[383339,383352] [2022-07-22 19:38:11,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:38:11,337 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:38:11,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11 WrapperNode [2022-07-22 19:38:11,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:38:11,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:38:11,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:38:11,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:38:11,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:11,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:11,794 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2022-07-22 19:38:11,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:38:11,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:38:11,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:38:11,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:38:11,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:11,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:11,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:11,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:12,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:12,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:12,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:12,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:38:12,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:38:12,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:38:12,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:38:12,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (1/1) ... [2022-07-22 19:38:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:38:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:38:12,276 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) [2022-07-22 19:38:12,299 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 [2022-07-22 19:38:12,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:38:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:38:12,320 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:38:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:38:12,320 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:38:12,320 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:38:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:38:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:38:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:38:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:38:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:38:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:38:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:38:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:38:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:38:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:38:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:38:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:38:12,474 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:38:12,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:38:18,624 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:38:18,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:38:18,646 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-22 19:38:18,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:38:18 BoogieIcfgContainer [2022-07-22 19:38:18,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:38:18,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:38:18,651 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:38:18,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:38:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:38:08" (1/3) ... [2022-07-22 19:38:18,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2703e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:38:18, skipping insertion in model container [2022-07-22 19:38:18,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:38:11" (2/3) ... [2022-07-22 19:38:18,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2703e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:38:18, skipping insertion in model container [2022-07-22 19:38:18,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:38:18" (3/3) ... [2022-07-22 19:38:18,656 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.11.cil-1.c [2022-07-22 19:38:18,668 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:38:18,668 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:38:18,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:38:18,748 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@d81a92b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@783df20 [2022-07-22 19:38:18,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:38:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 19:38:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:18,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:18,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:18,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:18,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-07-22 19:38:18,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:18,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527921720] [2022-07-22 19:38:18,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:19,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:19,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527921720] [2022-07-22 19:38:19,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527921720] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:19,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:19,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:38:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960423205] [2022-07-22 19:38:19,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:38:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:38:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:38:19,341 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:21,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:21,138 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2022-07-22 19:38:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:38:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:21,165 INFO L225 Difference]: With dead ends: 5214 [2022-07-22 19:38:21,165 INFO L226 Difference]: Without dead ends: 2611 [2022-07-22 19:38:21,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:38:21,178 INFO L413 NwaCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17106 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:21,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 17106 Invalid, 732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:38:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-07-22 19:38:21,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2022-07-22 19:38:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 19:38:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-07-22 19:38:21,330 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-07-22 19:38:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:21,330 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-07-22 19:38:21,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-07-22 19:38:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:21,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:21,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:21,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:38:21,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-07-22 19:38:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:21,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843301050] [2022-07-22 19:38:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:21,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:21,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:21,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843301050] [2022-07-22 19:38:21,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843301050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:21,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:21,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:38:21,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975139922] [2022-07-22 19:38:21,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:21,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:38:21,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:38:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:38:21,638 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:24,443 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2022-07-22 19:38:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:38:24,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:24,458 INFO L225 Difference]: With dead ends: 3438 [2022-07-22 19:38:24,459 INFO L226 Difference]: Without dead ends: 3098 [2022-07-22 19:38:24,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:38:24,462 INFO L413 NwaCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12793 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17421 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:24,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5429 Valid, 17421 Invalid, 1993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 19:38:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-07-22 19:38:24,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2022-07-22 19:38:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-22 19:38:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2022-07-22 19:38:24,562 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2022-07-22 19:38:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:24,562 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2022-07-22 19:38:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2022-07-22 19:38:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:24,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:24,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:24,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:38:24,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-07-22 19:38:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:24,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550642623] [2022-07-22 19:38:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:24,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550642623] [2022-07-22 19:38:24,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550642623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:24,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:24,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:24,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63096806] [2022-07-22 19:38:24,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:24,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:24,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:24,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:24,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:24,755 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:27,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:27,888 INFO L93 Difference]: Finished difference Result 4296 states and 7459 transitions. [2022-07-22 19:38:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:27,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:27,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:27,904 INFO L225 Difference]: With dead ends: 4296 [2022-07-22 19:38:27,905 INFO L226 Difference]: Without dead ends: 3601 [2022-07-22 19:38:27,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:27,909 INFO L413 NwaCegarLoop]: 4919 mSDtfsCounter, 5434 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 22578 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:27,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 22578 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 19:38:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-07-22 19:38:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3165. [2022-07-22 19:38:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.7786085825747724) internal successors, (5471), 3081 states have internal predecessors, (5471), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-22 19:38:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5608 transitions. [2022-07-22 19:38:28,023 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5608 transitions. Word has length 168 [2022-07-22 19:38:28,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:28,023 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 5608 transitions. [2022-07-22 19:38:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5608 transitions. [2022-07-22 19:38:28,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:28,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:28,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:28,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:38:28,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:28,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:28,027 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2022-07-22 19:38:28,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:28,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61149053] [2022-07-22 19:38:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:28,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:28,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61149053] [2022-07-22 19:38:28,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61149053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:28,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:28,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:28,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289999443] [2022-07-22 19:38:28,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:28,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:28,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:28,180 INFO L87 Difference]: Start difference. First operand 3165 states and 5608 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:31,160 INFO L93 Difference]: Finished difference Result 5561 states and 9484 transitions. [2022-07-22 19:38:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:31,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:31,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:31,182 INFO L225 Difference]: With dead ends: 5561 [2022-07-22 19:38:31,182 INFO L226 Difference]: Without dead ends: 4536 [2022-07-22 19:38:31,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:31,189 INFO L413 NwaCegarLoop]: 4911 mSDtfsCounter, 5431 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5449 SdHoareTripleChecker+Valid, 22570 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:31,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5449 Valid, 22570 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:38:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-07-22 19:38:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3826. [2022-07-22 19:38:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3683 states have (on average 1.743687211512354) internal successors, (6422), 3690 states have internal predecessors, (6422), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-22 19:38:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 6647 transitions. [2022-07-22 19:38:31,346 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 6647 transitions. Word has length 168 [2022-07-22 19:38:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:31,352 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 6647 transitions. [2022-07-22 19:38:31,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:31,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 6647 transitions. [2022-07-22 19:38:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:31,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:31,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:31,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:38:31,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2022-07-22 19:38:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:31,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425613611] [2022-07-22 19:38:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:31,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:31,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425613611] [2022-07-22 19:38:31,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425613611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:31,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:31,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117277791] [2022-07-22 19:38:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:31,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:31,537 INFO L87 Difference]: Start difference. First operand 3826 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:34,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:34,478 INFO L93 Difference]: Finished difference Result 7994 states and 13355 transitions. [2022-07-22 19:38:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:34,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:34,507 INFO L225 Difference]: With dead ends: 7994 [2022-07-22 19:38:34,507 INFO L226 Difference]: Without dead ends: 6308 [2022-07-22 19:38:34,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:34,518 INFO L413 NwaCegarLoop]: 4907 mSDtfsCounter, 5427 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22566 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:34,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 22566 Invalid, 2995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 19:38:34,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2022-07-22 19:38:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5149. [2022-07-22 19:38:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 4898 states have (on average 1.699469171090241) internal successors, (8324), 4909 states have internal predecessors, (8324), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-22 19:38:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8731 transitions. [2022-07-22 19:38:34,763 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8731 transitions. Word has length 168 [2022-07-22 19:38:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:34,763 INFO L495 AbstractCegarLoop]: Abstraction has 5149 states and 8731 transitions. [2022-07-22 19:38:34,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:34,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8731 transitions. [2022-07-22 19:38:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:34,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:34,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:34,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:38:34,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:34,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2022-07-22 19:38:34,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:34,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721043113] [2022-07-22 19:38:34,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:34,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:34,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:34,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:34,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721043113] [2022-07-22 19:38:34,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721043113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:34,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:34,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:34,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661922889] [2022-07-22 19:38:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:34,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:34,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:34,966 INFO L87 Difference]: Start difference. First operand 5149 states and 8731 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:38,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:38,328 INFO L93 Difference]: Finished difference Result 12859 states and 21113 transitions. [2022-07-22 19:38:38,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:38,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:38,374 INFO L225 Difference]: With dead ends: 12859 [2022-07-22 19:38:38,374 INFO L226 Difference]: Without dead ends: 9850 [2022-07-22 19:38:38,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:38,392 INFO L413 NwaCegarLoop]: 4903 mSDtfsCounter, 5423 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22562 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:38,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5441 Valid, 22562 Invalid, 2990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 19:38:38,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2022-07-22 19:38:38,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 7800. [2022-07-22 19:38:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7333 states have (on average 1.654711577798991) internal successors, (12134), 7352 states have internal predecessors, (12134), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-22 19:38:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12923 transitions. [2022-07-22 19:38:38,851 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12923 transitions. Word has length 168 [2022-07-22 19:38:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:38,852 INFO L495 AbstractCegarLoop]: Abstraction has 7800 states and 12923 transitions. [2022-07-22 19:38:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12923 transitions. [2022-07-22 19:38:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:38,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:38,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:38,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:38:38,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:38,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:38,858 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2022-07-22 19:38:38,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449359358] [2022-07-22 19:38:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:38,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:38,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:38,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:39,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449359358] [2022-07-22 19:38:39,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449359358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:39,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:39,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136775277] [2022-07-22 19:38:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:39,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:39,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:39,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:39,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:39,004 INFO L87 Difference]: Start difference. First operand 7800 states and 12923 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:42,676 INFO L93 Difference]: Finished difference Result 22588 states and 36687 transitions. [2022-07-22 19:38:42,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:42,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:42,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:42,747 INFO L225 Difference]: With dead ends: 22588 [2022-07-22 19:38:42,747 INFO L226 Difference]: Without dead ends: 16928 [2022-07-22 19:38:42,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:42,776 INFO L413 NwaCegarLoop]: 4897 mSDtfsCounter, 5422 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22556 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:42,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 22556 Invalid, 2985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [83 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:38:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2022-07-22 19:38:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 13115. [2022-07-22 19:38:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6185330713817945) internal successors, (19772), 12251 states have internal predecessors, (19772), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-22 19:38:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21379 transitions. [2022-07-22 19:38:43,597 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21379 transitions. Word has length 168 [2022-07-22 19:38:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:43,597 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21379 transitions. [2022-07-22 19:38:43,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21379 transitions. [2022-07-22 19:38:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:43,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:43,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:38:43,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:43,614 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2022-07-22 19:38:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831973005] [2022-07-22 19:38:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:43,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:43,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831973005] [2022-07-22 19:38:43,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831973005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:43,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:43,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834599015] [2022-07-22 19:38:43,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:43,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:43,765 INFO L87 Difference]: Start difference. First operand 13115 states and 21379 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:45,984 INFO L93 Difference]: Finished difference Result 28108 states and 45760 transitions. [2022-07-22 19:38:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:38:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:46,046 INFO L225 Difference]: With dead ends: 28108 [2022-07-22 19:38:46,046 INFO L226 Difference]: Without dead ends: 17133 [2022-07-22 19:38:46,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:38:46,086 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5167 mSDsluCounter, 12587 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:46,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 17141 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:38:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17133 states. [2022-07-22 19:38:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17133 to 13115. [2022-07-22 19:38:46,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6158316961362147) internal successors, (19739), 12251 states have internal predecessors, (19739), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-22 19:38:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21346 transitions. [2022-07-22 19:38:46,808 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21346 transitions. Word has length 168 [2022-07-22 19:38:46,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:46,809 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21346 transitions. [2022-07-22 19:38:46,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:46,809 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21346 transitions. [2022-07-22 19:38:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:46,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:46,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:46,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:38:46,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2022-07-22 19:38:46,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:46,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652468862] [2022-07-22 19:38:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:46,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:46,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652468862] [2022-07-22 19:38:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652468862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:46,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:46,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881054312] [2022-07-22 19:38:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:46,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:46,956 INFO L87 Difference]: Start difference. First operand 13115 states and 21346 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:51,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:38:51,764 INFO L93 Difference]: Finished difference Result 41980 states and 67733 transitions. [2022-07-22 19:38:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:38:51,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:38:51,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:38:51,876 INFO L225 Difference]: With dead ends: 41980 [2022-07-22 19:38:51,876 INFO L226 Difference]: Without dead ends: 31005 [2022-07-22 19:38:51,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:38:51,917 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5410 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 22542 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 19:38:51,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 22542 Invalid, 2947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 19:38:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2022-07-22 19:38:53,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 23840. [2022-07-22 19:38:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 22077 states have (on average 1.5910223309326448) internal successors, (35125), 22144 states have internal predecessors, (35125), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-22 19:38:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 38530 transitions. [2022-07-22 19:38:53,455 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 38530 transitions. Word has length 168 [2022-07-22 19:38:53,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:38:53,455 INFO L495 AbstractCegarLoop]: Abstraction has 23840 states and 38530 transitions. [2022-07-22 19:38:53,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:38:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 38530 transitions. [2022-07-22 19:38:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:38:53,470 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:38:53,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:38:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:38:53,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:38:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:38:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2022-07-22 19:38:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:38:53,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152004375] [2022-07-22 19:38:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:38:53,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:38:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:38:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:38:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:38:53,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:38:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:38:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:38:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:38:53,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:38:53,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152004375] [2022-07-22 19:38:53,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152004375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:38:53,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:38:53,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:38:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988146918] [2022-07-22 19:38:53,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:38:53,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:38:53,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:38:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:38:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:38:53,629 INFO L87 Difference]: Start difference. First operand 23840 states and 38530 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:39:00,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:00,082 INFO L93 Difference]: Finished difference Result 80899 states and 130827 transitions. [2022-07-22 19:39:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:00,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:39:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:00,358 INFO L225 Difference]: With dead ends: 80899 [2022-07-22 19:39:00,358 INFO L226 Difference]: Without dead ends: 59199 [2022-07-22 19:39:00,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:39:00,432 INFO L413 NwaCegarLoop]: 4878 mSDtfsCounter, 5409 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22537 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:00,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22537 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 19:39:00,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59199 states. [2022-07-22 19:39:03,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59199 to 45349. [2022-07-22 19:39:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45349 states, 41858 states have (on average 1.5763533852549094) internal successors, (65983), 41989 states have internal predecessors, (65983), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-22 19:39:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45349 states to 45349 states and 73470 transitions. [2022-07-22 19:39:03,509 INFO L78 Accepts]: Start accepts. Automaton has 45349 states and 73470 transitions. Word has length 168 [2022-07-22 19:39:03,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:03,510 INFO L495 AbstractCegarLoop]: Abstraction has 45349 states and 73470 transitions. [2022-07-22 19:39:03,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:39:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 45349 states and 73470 transitions. [2022-07-22 19:39:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:39:03,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:03,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:03,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:39:03,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:03,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:03,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2022-07-22 19:39:03,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:03,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846323899] [2022-07-22 19:39:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:03,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:39:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:39:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:39:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:03,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:03,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846323899] [2022-07-22 19:39:03,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846323899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:03,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:03,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:03,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946073793] [2022-07-22 19:39:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:03,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:03,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:03,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:03,694 INFO L87 Difference]: Start difference. First operand 45349 states and 73470 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:39:14,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:14,841 INFO L93 Difference]: Finished difference Result 158734 states and 258857 transitions. [2022-07-22 19:39:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:39:14,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:39:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:15,422 INFO L225 Difference]: With dead ends: 158734 [2022-07-22 19:39:15,422 INFO L226 Difference]: Without dead ends: 115525 [2022-07-22 19:39:15,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:39:15,539 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22532 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:15,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22532 Invalid, 2931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 19:39:15,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115525 states. [2022-07-22 19:39:21,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115525 to 88494. [2022-07-22 19:39:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88494 states, 81547 states have (on average 1.5682857738482103) internal successors, (127889), 81806 states have internal predecessors, (127889), 5147 states have call successors, (5147), 1543 states have call predecessors, (5147), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-22 19:39:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88494 states to 88494 states and 144998 transitions. [2022-07-22 19:39:22,331 INFO L78 Accepts]: Start accepts. Automaton has 88494 states and 144998 transitions. Word has length 168 [2022-07-22 19:39:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:39:22,332 INFO L495 AbstractCegarLoop]: Abstraction has 88494 states and 144998 transitions. [2022-07-22 19:39:22,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:39:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 88494 states and 144998 transitions. [2022-07-22 19:39:22,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 19:39:22,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:39:22,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:39:22,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:39:22,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:39:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:39:22,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767897, now seen corresponding path program 1 times [2022-07-22 19:39:22,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:39:22,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285475173] [2022-07-22 19:39:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:39:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:39:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:39:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 19:39:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 19:39:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 19:39:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 19:39:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:39:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:39:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:39:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285475173] [2022-07-22 19:39:22,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285475173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:39:22,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:39:22,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:39:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706782918] [2022-07-22 19:39:22,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:39:22,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:39:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:39:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:39:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:39:22,512 INFO L87 Difference]: Start difference. First operand 88494 states and 144998 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:39:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:39:33,289 INFO L93 Difference]: Finished difference Result 203498 states and 339811 transitions. [2022-07-22 19:39:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:39:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-22 19:39:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:39:34,004 INFO L225 Difference]: With dead ends: 203498 [2022-07-22 19:39:34,005 INFO L226 Difference]: Without dead ends: 117144 [2022-07-22 19:39:34,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:39:34,218 INFO L413 NwaCegarLoop]: 4541 mSDtfsCounter, 5013 mSDsluCounter, 16735 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5032 SdHoareTripleChecker+Valid, 21276 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 19:39:34,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5032 Valid, 21276 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 19:39:34,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117144 states.