./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_label41+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:50:57,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:50:57,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:50:57,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:50:57,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:50:57,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:50:57,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:50:58,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:50:58,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:50:58,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:50:58,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:50:58,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:50:58,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:50:58,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:50:58,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:50:58,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:50:58,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:50:58,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:50:58,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:50:58,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:50:58,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:50:58,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:50:58,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:50:58,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:50:58,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:50:58,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:50:58,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:50:58,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:50:58,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:50:58,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:50:58,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:50:58,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:50:58,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:50:58,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:50:58,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:50:58,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:50:58,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:50:58,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:50:58,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:50:58,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:50:58,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:50:58,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:50:58,079 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:50:58,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:50:58,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:50:58,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:50:58,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:50:58,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:50:58,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:50:58,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:50:58,083 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:50:58,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:50:58,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:50:58,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:50:58,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:50:58,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:50:58,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:50:58,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:50:58,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:50:58,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:50:58,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:50:58,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:50:58,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:50:58,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:50:58,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:50:58,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:50:58,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:50:58,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:50:58,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:50:58,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:50:58,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:50:58,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:50:58,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:50:58,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:50:58,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:50:58,089 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1937875315099b80c98271a1c221b9887fc0d74aa97933e0962b57c2a2a9f37a [2021-12-28 01:50:58,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:50:58,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:50:58,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:50:58,443 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:50:58,444 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:50:58,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2021-12-28 01:50:58,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769aa7cd0/a73a2cc708e24677a8a310a61a4935f6/FLAGb00eecc6f [2021-12-28 01:50:59,414 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:50:59,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.07.cil-1.c [2021-12-28 01:50:59,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769aa7cd0/a73a2cc708e24677a8a310a61a4935f6/FLAGb00eecc6f [2021-12-28 01:50:59,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/769aa7cd0/a73a2cc708e24677a8a310a61a4935f6 [2021-12-28 01:50:59,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:50:59,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:50:59,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:50:59,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:50:59,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:50:59,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:50:59" (1/1) ... [2021-12-28 01:50:59,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76619a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:50:59, skipping insertion in model container [2021-12-28 01:50:59,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:50:59" (1/1) ... [2021-12-28 01:50:59,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:51:00,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:51:01,530 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_label41+token_ring.07.cil-1.c[376251,376264] [2021-12-28 01:51:01,562 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_label41+token_ring.07.cil-1.c[383339,383352] [2021-12-28 01:51:01,799 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:51:01,807 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:51:02,729 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_label41+token_ring.07.cil-1.c[376251,376264] [2021-12-28 01:51:02,737 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_label41+token_ring.07.cil-1.c[383339,383352] [2021-12-28 01:51:02,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:51:02,861 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:51:02,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02 WrapperNode [2021-12-28 01:51:02,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:51:02,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:51:02,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:51:02,863 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:51:02,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:02,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,301 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-28 01:51:03,302 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:51:03,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:51:03,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:51:03,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:51:03,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:51:03,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:51:03,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:51:03,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:51:03,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (1/1) ... [2021-12-28 01:51:03,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:51:03,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:51:03,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 01:51:04,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 01:51:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:51:04,083 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-28 01:51:04,083 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-28 01:51:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-28 01:51:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-28 01:51:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-28 01:51:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-28 01:51:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-28 01:51:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-28 01:51:04,084 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-28 01:51:04,084 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-28 01:51:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-28 01:51:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-28 01:51:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:51:04,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:51:04,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:51:04,210 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:51:04,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:51:10,240 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:51:10,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:51:10,270 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-28 01:51:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:51:10 BoogieIcfgContainer [2021-12-28 01:51:10,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:51:10,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:51:10,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:51:10,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:51:10,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:50:59" (1/3) ... [2021-12-28 01:51:10,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754a1ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:51:10, skipping insertion in model container [2021-12-28 01:51:10,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:51:02" (2/3) ... [2021-12-28 01:51:10,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754a1ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:51:10, skipping insertion in model container [2021-12-28 01:51:10,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:51:10" (3/3) ... [2021-12-28 01:51:10,281 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.07.cil-1.c [2021-12-28 01:51:10,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:51:10,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 01:51:10,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:51:10,418 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 01:51:10,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 01:51:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:51:10,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:10,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:10,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:10,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-28 01:51:10,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:10,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23069896] [2021-12-28 01:51:10,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:10,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:10,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:10,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23069896] [2021-12-28 01:51:10,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23069896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:10,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:10,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:51:10,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450740231] [2021-12-28 01:51:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:10,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:51:10,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:51:11,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:51:11,026 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:12,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:12,145 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-28 01:51:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 01:51:12,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:12,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:12,174 INFO L225 Difference]: With dead ends: 4955 [2021-12-28 01:51:12,174 INFO L226 Difference]: Without dead ends: 2460 [2021-12-28 01:51:12,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:51:12,187 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:12,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16788 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 01:51:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-28 01:51:12,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-28 01:51:12,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-28 01:51:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-28 01:51:12,315 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-28 01:51:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:12,315 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-28 01:51:12,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-28 01:51:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:12,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:12,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:12,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:51:12,320 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-28 01:51:12,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:12,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973871973] [2021-12-28 01:51:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:12,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:12,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:12,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973871973] [2021-12-28 01:51:12,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973871973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:12,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:12,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:51:12,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176899784] [2021-12-28 01:51:12,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:12,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:51:12,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:51:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:51:12,485 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:14,291 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-28 01:51:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 01:51:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:14,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:14,307 INFO L225 Difference]: With dead ends: 3029 [2021-12-28 01:51:14,307 INFO L226 Difference]: Without dead ends: 2792 [2021-12-28 01:51:14,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:51:14,313 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16919 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:14,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16919 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:51:14,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-28 01:51:14,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-28 01:51:14,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-28 01:51:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-28 01:51:14,399 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-28 01:51:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:14,401 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-28 01:51:14,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-28 01:51:14,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:14,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:14,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:14,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:51:14,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-28 01:51:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679552529] [2021-12-28 01:51:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:14,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:14,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:14,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679552529] [2021-12-28 01:51:14,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679552529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:14,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:14,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:14,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983122887] [2021-12-28 01:51:14,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:14,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:14,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:14,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:14,585 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:16,614 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2021-12-28 01:51:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:51:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:16,629 INFO L225 Difference]: With dead ends: 3617 [2021-12-28 01:51:16,629 INFO L226 Difference]: Without dead ends: 3134 [2021-12-28 01:51:16,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:51:16,634 INFO L933 BasicCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21671 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:16,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 21671 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:51:16,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-12-28 01:51:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2021-12-28 01:51:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-28 01:51:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2021-12-28 01:51:16,728 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2021-12-28 01:51:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:16,729 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2021-12-28 01:51:16,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2021-12-28 01:51:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:16,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:16,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:16,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:51:16,732 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-28 01:51:16,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:16,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430582583] [2021-12-28 01:51:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:16,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:16,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430582583] [2021-12-28 01:51:16,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430582583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:16,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:16,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:16,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740379985] [2021-12-28 01:51:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:16,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:16,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:16,884 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:19,014 INFO L93 Difference]: Finished difference Result 4483 states and 7682 transitions. [2021-12-28 01:51:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:51:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:19,034 INFO L225 Difference]: With dead ends: 4483 [2021-12-28 01:51:19,035 INFO L226 Difference]: Without dead ends: 3771 [2021-12-28 01:51:19,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:51:19,047 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4941 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 21663 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:19,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4955 Valid, 21663 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 01:51:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2021-12-28 01:51:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3307. [2021-12-28 01:51:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3186 states have (on average 1.7602008788449466) internal successors, (5608), 3192 states have internal predecessors, (5608), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-28 01:51:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 5791 transitions. [2021-12-28 01:51:19,200 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 5791 transitions. Word has length 123 [2021-12-28 01:51:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:19,200 INFO L470 AbstractCegarLoop]: Abstraction has 3307 states and 5791 transitions. [2021-12-28 01:51:19,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 5791 transitions. [2021-12-28 01:51:19,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:19,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:19,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:19,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:51:19,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-28 01:51:19,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:19,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890895209] [2021-12-28 01:51:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:19,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:19,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:19,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890895209] [2021-12-28 01:51:19,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890895209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:19,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:19,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:19,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826966518] [2021-12-28 01:51:19,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:19,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:19,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:19,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:19,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:19,347 INFO L87 Difference]: Start difference. First operand 3307 states and 5791 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:21,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:21,321 INFO L93 Difference]: Finished difference Result 6150 states and 10285 transitions. [2021-12-28 01:51:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:51:21,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:21,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:21,344 INFO L225 Difference]: With dead ends: 6150 [2021-12-28 01:51:21,345 INFO L226 Difference]: Without dead ends: 4979 [2021-12-28 01:51:21,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:51:21,351 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 4937 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4951 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:21,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4951 Valid, 21659 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:51:21,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4979 states. [2021-12-28 01:51:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4979 to 4226. [2021-12-28 01:51:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4013 states have (on average 1.7139297283827561) internal successors, (6878), 4023 states have internal predecessors, (6878), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-28 01:51:21,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 7211 transitions. [2021-12-28 01:51:21,549 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 7211 transitions. Word has length 123 [2021-12-28 01:51:21,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:21,549 INFO L470 AbstractCegarLoop]: Abstraction has 4226 states and 7211 transitions. [2021-12-28 01:51:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 7211 transitions. [2021-12-28 01:51:21,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:21,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:21,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:21,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:51:21,554 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:21,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-28 01:51:21,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:21,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622957515] [2021-12-28 01:51:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:21,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:21,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:21,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:21,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622957515] [2021-12-28 01:51:21,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622957515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:21,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:21,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:21,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110022599] [2021-12-28 01:51:21,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:21,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:21,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:21,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:21,690 INFO L87 Difference]: Start difference. First operand 4226 states and 7211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:23,837 INFO L93 Difference]: Finished difference Result 9483 states and 15507 transitions. [2021-12-28 01:51:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:51:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:23,887 INFO L225 Difference]: With dead ends: 9483 [2021-12-28 01:51:23,887 INFO L226 Difference]: Without dead ends: 7393 [2021-12-28 01:51:23,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:51:23,901 INFO L933 BasicCegarLoop]: 4591 mSDtfsCounter, 4933 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21655 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:23,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21655 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-28 01:51:23,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7393 states. [2021-12-28 01:51:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7393 to 6069. [2021-12-28 01:51:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 5672 states have (on average 1.6614950634696757) internal successors, (9424), 5690 states have internal predecessors, (9424), 277 states have call successors, (277), 102 states have call predecessors, (277), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2021-12-28 01:51:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10075 transitions. [2021-12-28 01:51:24,299 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10075 transitions. Word has length 123 [2021-12-28 01:51:24,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:24,300 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10075 transitions. [2021-12-28 01:51:24,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10075 transitions. [2021-12-28 01:51:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:24,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:24,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:24,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:51:24,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:24,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:24,306 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-28 01:51:24,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:24,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405866864] [2021-12-28 01:51:24,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:24,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:24,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:24,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405866864] [2021-12-28 01:51:24,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405866864] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:24,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:24,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:24,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575591479] [2021-12-28 01:51:24,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:24,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:24,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:24,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:24,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:24,420 INFO L87 Difference]: Start difference. First operand 6069 states and 10075 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:26,468 INFO L93 Difference]: Finished difference Result 16148 states and 26009 transitions. [2021-12-28 01:51:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:51:26,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:26,517 INFO L225 Difference]: With dead ends: 16148 [2021-12-28 01:51:26,517 INFO L226 Difference]: Without dead ends: 12215 [2021-12-28 01:51:26,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:51:26,537 INFO L933 BasicCegarLoop]: 4585 mSDtfsCounter, 4932 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21649 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:26,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21649 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:51:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12215 states. [2021-12-28 01:51:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12215 to 9768. [2021-12-28 01:51:27,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6143507719649006) internal successors, (14534), 9037 states have internal predecessors, (14534), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-28 01:51:27,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15875 transitions. [2021-12-28 01:51:27,074 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15875 transitions. Word has length 123 [2021-12-28 01:51:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:27,075 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15875 transitions. [2021-12-28 01:51:27,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:27,075 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15875 transitions. [2021-12-28 01:51:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:27,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:27,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:27,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:51:27,083 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:27,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-28 01:51:27,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:27,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524364561] [2021-12-28 01:51:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:27,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:27,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:27,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524364561] [2021-12-28 01:51:27,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524364561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:27,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:27,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:27,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204207076] [2021-12-28 01:51:27,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:27,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:27,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:27,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:27,220 INFO L87 Difference]: Start difference. First operand 9768 states and 15875 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:28,452 INFO L93 Difference]: Finished difference Result 19942 states and 32204 transitions. [2021-12-28 01:51:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 01:51:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:28,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:28,502 INFO L225 Difference]: With dead ends: 19942 [2021-12-28 01:51:28,502 INFO L226 Difference]: Without dead ends: 12310 [2021-12-28 01:51:28,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-28 01:51:28,532 INFO L933 BasicCegarLoop]: 4350 mSDtfsCounter, 4776 mSDsluCounter, 12356 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4791 SdHoareTripleChecker+Valid, 16706 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:28,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4791 Valid, 16706 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 01:51:28,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12310 states. [2021-12-28 01:51:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12310 to 9768. [2021-12-28 01:51:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9768 states, 9003 states have (on average 1.6106853271131845) internal successors, (14501), 9037 states have internal predecessors, (14501), 533 states have call successors, (533), 198 states have call predecessors, (533), 230 states have return successors, (808), 564 states have call predecessors, (808), 533 states have call successors, (808) [2021-12-28 01:51:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9768 states to 9768 states and 15842 transitions. [2021-12-28 01:51:28,994 INFO L78 Accepts]: Start accepts. Automaton has 9768 states and 15842 transitions. Word has length 123 [2021-12-28 01:51:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:28,994 INFO L470 AbstractCegarLoop]: Abstraction has 9768 states and 15842 transitions. [2021-12-28 01:51:28,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:28,995 INFO L276 IsEmpty]: Start isEmpty. Operand 9768 states and 15842 transitions. [2021-12-28 01:51:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:29,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:29,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:29,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:51:29,002 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-28 01:51:29,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:29,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955449138] [2021-12-28 01:51:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:29,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:29,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:29,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955449138] [2021-12-28 01:51:29,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955449138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:29,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:29,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:29,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376954133] [2021-12-28 01:51:29,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:29,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:29,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:29,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:29,112 INFO L87 Difference]: Start difference. First operand 9768 states and 15842 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:32,286 INFO L93 Difference]: Finished difference Result 32836 states and 52097 transitions. [2021-12-28 01:51:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:51:32,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:32,390 INFO L225 Difference]: With dead ends: 32836 [2021-12-28 01:51:32,391 INFO L226 Difference]: Without dead ends: 25204 [2021-12-28 01:51:32,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:51:32,425 INFO L933 BasicCegarLoop]: 4569 mSDtfsCounter, 5211 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5233 SdHoareTripleChecker+Valid, 21625 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:32,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5233 Valid, 21625 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:51:32,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25204 states. [2021-12-28 01:51:33,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25204 to 17165. [2021-12-28 01:51:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 15696 states have (on average 1.5779179408766564) internal successors, (24767), 15762 states have internal predecessors, (24767), 1013 states have call successors, (1013), 390 states have call predecessors, (1013), 454 states have return successors, (1806), 1076 states have call predecessors, (1806), 1013 states have call successors, (1806) [2021-12-28 01:51:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 27586 transitions. [2021-12-28 01:51:33,438 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 27586 transitions. Word has length 123 [2021-12-28 01:51:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:33,439 INFO L470 AbstractCegarLoop]: Abstraction has 17165 states and 27586 transitions. [2021-12-28 01:51:33,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 27586 transitions. [2021-12-28 01:51:33,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:33,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:33,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:33,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:51:33,452 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:33,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:33,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-28 01:51:33,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:33,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155620578] [2021-12-28 01:51:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:33,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:33,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:33,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155620578] [2021-12-28 01:51:33,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155620578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:33,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:33,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:33,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622035266] [2021-12-28 01:51:33,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:33,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:33,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:33,573 INFO L87 Difference]: Start difference. First operand 17165 states and 27586 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:38,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:38,594 INFO L93 Difference]: Finished difference Result 61867 states and 98487 transitions. [2021-12-28 01:51:38,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:51:38,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:38,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:38,780 INFO L225 Difference]: With dead ends: 61867 [2021-12-28 01:51:38,780 INFO L226 Difference]: Without dead ends: 46838 [2021-12-28 01:51:38,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:51:38,822 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 4981 mSDsluCounter, 17053 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4994 SdHoareTripleChecker+Valid, 21724 SdHoareTripleChecker+Invalid, 2324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:38,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4994 Valid, 21724 Invalid, 2324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 01:51:38,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2021-12-28 01:51:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 31602. [2021-12-28 01:51:41,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31602 states, 28757 states have (on average 1.5581945265500574) internal successors, (44809), 28887 states have internal predecessors, (44809), 1941 states have call successors, (1941), 774 states have call predecessors, (1941), 902 states have return successors, (4256), 2068 states have call predecessors, (4256), 1941 states have call successors, (4256) [2021-12-28 01:51:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31602 states to 31602 states and 51006 transitions. [2021-12-28 01:51:41,166 INFO L78 Accepts]: Start accepts. Automaton has 31602 states and 51006 transitions. Word has length 123 [2021-12-28 01:51:41,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:51:41,166 INFO L470 AbstractCegarLoop]: Abstraction has 31602 states and 51006 transitions. [2021-12-28 01:51:41,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:41,167 INFO L276 IsEmpty]: Start isEmpty. Operand 31602 states and 51006 transitions. [2021-12-28 01:51:41,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 01:51:41,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:51:41,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:51:41,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:51:41,189 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 01:51:41,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:51:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-28 01:51:41,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:51:41,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800753224] [2021-12-28 01:51:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:51:41,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:51:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-28 01:51:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-28 01:51:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 01:51:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 01:51:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 01:51:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:51:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:51:41,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:51:41,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800753224] [2021-12-28 01:51:41,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800753224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:51:41,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:51:41,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:51:41,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033456164] [2021-12-28 01:51:41,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:51:41,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:51:41,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:51:41,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:51:41,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:51:41,305 INFO L87 Difference]: Start difference. First operand 31602 states and 51006 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 01:51:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:51:49,051 INFO L93 Difference]: Finished difference Result 117782 states and 189717 transitions. [2021-12-28 01:51:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:51:49,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-28 01:51:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:51:49,478 INFO L225 Difference]: With dead ends: 117782 [2021-12-28 01:51:49,478 INFO L226 Difference]: Without dead ends: 88316 [2021-12-28 01:51:49,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 01:51:49,592 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 5131 mSDsluCounter, 17056 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5153 SdHoareTripleChecker+Valid, 21615 SdHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:51:49,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5153 Valid, 21615 Invalid, 1996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 01:51:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88316 states.