./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.06.cil-2.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 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:07:08,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:07:08,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:07:08,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:07:08,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:07:08,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:07:08,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:07:08,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:07:08,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:07:08,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:07:08,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:07:08,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:07:08,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:07:08,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:07:08,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:07:08,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:07:08,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:07:08,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:07:08,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:07:08,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:07:08,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:07:08,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:07:08,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:07:08,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:07:08,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:07:08,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:07:08,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:07:08,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:07:08,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:07:08,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:07:08,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:07:08,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:07:08,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:07:08,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:07:08,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:07:08,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:07:08,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:07:08,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:07:08,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:07:08,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:07:08,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:07:08,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:07:08,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:07:08,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:07:08,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:07:08,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:07:08,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:07:08,974 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:07:08,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:07:08,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:07:08,974 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:07:08,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:07:08,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:07:08,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:07:08,977 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:07:08,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:07:08,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:07:08,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:07:08,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:07:08,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:07:08,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:07:08,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:07:08,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:07:08,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:07:08,979 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d0fbec14d1477738cb6d25ea9b61fc7005f787f2c8a0ac2c555d7e4fa1dbf47 [2021-12-16 01:07:09,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:07:09,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:07:09,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:07:09,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:07:09,195 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:07:09,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2021-12-16 01:07:09,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2d12714/c0189bd494274d76bf51b4a51262fb74/FLAG3933cc6ac [2021-12-16 01:07:09,620 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:07:09,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-2.c [2021-12-16 01:07:09,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2d12714/c0189bd494274d76bf51b4a51262fb74/FLAG3933cc6ac [2021-12-16 01:07:09,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c2d12714/c0189bd494274d76bf51b4a51262fb74 [2021-12-16 01:07:09,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:07:09,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:07:09,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:07:09,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:07:09,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:07:09,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:09,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a64f072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09, skipping insertion in model container [2021-12-16 01:07:09,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:09,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:07:09,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:07:09,822 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/systemc/token_ring.06.cil-2.c[671,684] [2021-12-16 01:07:09,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:07:09,930 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:07:09,942 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/systemc/token_ring.06.cil-2.c[671,684] [2021-12-16 01:07:09,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:07:09,988 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:07:09,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09 WrapperNode [2021-12-16 01:07:09,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:07:09,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:07:09,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:07:09,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:07:10,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,042 INFO L137 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 505 [2021-12-16 01:07:10,043 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:07:10,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:07:10,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:07:10,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:07:10,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:07:10,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:07:10,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:07:10,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:07:10,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (1/1) ... [2021-12-16 01:07:10,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:07:10,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:07:10,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 01:07:10,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 01:07:10,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:07:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 01:07:10,129 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 01:07:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 01:07:10,129 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 01:07:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 01:07:10,129 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 01:07:10,129 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 01:07:10,129 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 01:07:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 01:07:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 01:07:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:07:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 01:07:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 01:07:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:07:10,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:07:10,197 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:07:10,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:07:10,612 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:07:10,620 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:07:10,622 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-16 01:07:10,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:10 BoogieIcfgContainer [2021-12-16 01:07:10,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:07:10,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:07:10,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:07:10,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:07:10,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:07:09" (1/3) ... [2021-12-16 01:07:10,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2024e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:10, skipping insertion in model container [2021-12-16 01:07:10,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:07:09" (2/3) ... [2021-12-16 01:07:10,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f2024e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:07:10, skipping insertion in model container [2021-12-16 01:07:10,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:07:10" (3/3) ... [2021-12-16 01:07:10,633 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.c [2021-12-16 01:07:10,636 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:07:10,637 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:07:10,673 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:07:10,678 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 01:07:10,678 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:07:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 01:07:10,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:10,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:10,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:07:10,716 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1459493847, now seen corresponding path program 1 times [2021-12-16 01:07:10,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:10,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864570082] [2021-12-16 01:07:10,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:10,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:11,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:11,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864570082] [2021-12-16 01:07:11,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864570082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:11,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:11,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:07:11,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973473687] [2021-12-16 01:07:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:11,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:07:11,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:07:11,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:07:11,059 INFO L87 Difference]: Start difference. First operand has 232 states, 204 states have (on average 1.6323529411764706) internal successors, (333), 206 states have internal predecessors, (333), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:11,708 INFO L93 Difference]: Finished difference Result 533 states and 868 transitions. [2021-12-16 01:07:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:07:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:11,720 INFO L225 Difference]: With dead ends: 533 [2021-12-16 01:07:11,720 INFO L226 Difference]: Without dead ends: 303 [2021-12-16 01:07:11,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:07:11,727 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 584 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:11,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 639 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:07:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-16 01:07:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 227. [2021-12-16 01:07:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 200 states have (on average 1.54) internal successors, (308), 201 states have internal predecessors, (308), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 01:07:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 348 transitions. [2021-12-16 01:07:11,781 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 348 transitions. Word has length 111 [2021-12-16 01:07:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 348 transitions. [2021-12-16 01:07:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 348 transitions. [2021-12-16 01:07:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:11,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:11,784 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] [2021-12-16 01:07:11,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:07:11,785 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:11,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1446179435, now seen corresponding path program 1 times [2021-12-16 01:07:11,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:11,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120363361] [2021-12-16 01:07:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:11,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:11,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:11,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:11,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120363361] [2021-12-16 01:07:11,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120363361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:11,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:11,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:07:11,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461534715] [2021-12-16 01:07:11,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:11,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:07:11,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:11,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:07:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:07:11,925 INFO L87 Difference]: Start difference. First operand 227 states and 348 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:13,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:13,071 INFO L93 Difference]: Finished difference Result 811 states and 1275 transitions. [2021-12-16 01:07:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:07:13,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:13,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:13,076 INFO L225 Difference]: With dead ends: 811 [2021-12-16 01:07:13,079 INFO L226 Difference]: Without dead ends: 598 [2021-12-16 01:07:13,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:07:13,088 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 863 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:13,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1100 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:07:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-16 01:07:13,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 447. [2021-12-16 01:07:13,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 398 states have (on average 1.5527638190954773) internal successors, (618), 400 states have internal predecessors, (618), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-12-16 01:07:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 691 transitions. [2021-12-16 01:07:13,128 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 691 transitions. Word has length 111 [2021-12-16 01:07:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:13,129 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 691 transitions. [2021-12-16 01:07:13,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 691 transitions. [2021-12-16 01:07:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:13,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:13,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:07:13,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:07:13,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1569789201, now seen corresponding path program 1 times [2021-12-16 01:07:13,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:13,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336117065] [2021-12-16 01:07:13,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:13,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:13,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:13,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:13,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336117065] [2021-12-16 01:07:13,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336117065] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:13,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:13,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:13,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195343791] [2021-12-16 01:07:13,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:13,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:13,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:13,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:13,271 INFO L87 Difference]: Start difference. First operand 447 states and 691 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:14,609 INFO L93 Difference]: Finished difference Result 1334 states and 2095 transitions. [2021-12-16 01:07:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:07:14,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:14,615 INFO L225 Difference]: With dead ends: 1334 [2021-12-16 01:07:14,615 INFO L226 Difference]: Without dead ends: 901 [2021-12-16 01:07:14,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:07:14,617 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 869 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:14,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 1728 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:07:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2021-12-16 01:07:14,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 652. [2021-12-16 01:07:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 581 states have (on average 1.5456110154905336) internal successors, (898), 584 states have internal predecessors, (898), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2021-12-16 01:07:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1003 transitions. [2021-12-16 01:07:14,662 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1003 transitions. Word has length 111 [2021-12-16 01:07:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:14,663 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1003 transitions. [2021-12-16 01:07:14,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1003 transitions. [2021-12-16 01:07:14,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:14,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:14,665 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] [2021-12-16 01:07:14,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:07:14,666 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:14,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1106203181, now seen corresponding path program 1 times [2021-12-16 01:07:14,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:14,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697982096] [2021-12-16 01:07:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:14,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:14,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:14,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697982096] [2021-12-16 01:07:14,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697982096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:14,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:14,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:14,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963352555] [2021-12-16 01:07:14,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:14,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:14,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:14,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:14,755 INFO L87 Difference]: Start difference. First operand 652 states and 1003 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:16,013 INFO L93 Difference]: Finished difference Result 2104 states and 3295 transitions. [2021-12-16 01:07:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:07:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:16,019 INFO L225 Difference]: With dead ends: 2104 [2021-12-16 01:07:16,020 INFO L226 Difference]: Without dead ends: 1466 [2021-12-16 01:07:16,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:07:16,022 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 933 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:16,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 1210 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:07:16,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-12-16 01:07:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1063. [2021-12-16 01:07:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 948 states have (on average 1.5390295358649788) internal successors, (1459), 953 states have internal predecessors, (1459), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2021-12-16 01:07:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1632 transitions. [2021-12-16 01:07:16,078 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1632 transitions. Word has length 111 [2021-12-16 01:07:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:16,078 INFO L470 AbstractCegarLoop]: Abstraction has 1063 states and 1632 transitions. [2021-12-16 01:07:16,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:16,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1632 transitions. [2021-12-16 01:07:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:16,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:16,080 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] [2021-12-16 01:07:16,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:07:16,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash 222694191, now seen corresponding path program 1 times [2021-12-16 01:07:16,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:16,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764572060] [2021-12-16 01:07:16,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:16,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:16,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:16,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:16,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764572060] [2021-12-16 01:07:16,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764572060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:16,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:16,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:16,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396256664] [2021-12-16 01:07:16,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:16,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:16,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:16,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:16,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:16,179 INFO L87 Difference]: Start difference. First operand 1063 states and 1632 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:17,492 INFO L93 Difference]: Finished difference Result 3584 states and 5592 transitions. [2021-12-16 01:07:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:07:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:17,504 INFO L225 Difference]: With dead ends: 3584 [2021-12-16 01:07:17,504 INFO L226 Difference]: Without dead ends: 2535 [2021-12-16 01:07:17,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:07:17,510 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 863 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:17,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1708 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:07:17,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2021-12-16 01:07:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 1891. [2021-12-16 01:07:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1688 states have (on average 1.5349526066350712) internal successors, (2591), 1697 states have internal predecessors, (2591), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2021-12-16 01:07:17,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2906 transitions. [2021-12-16 01:07:17,602 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2906 transitions. Word has length 111 [2021-12-16 01:07:17,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:17,603 INFO L470 AbstractCegarLoop]: Abstraction has 1891 states and 2906 transitions. [2021-12-16 01:07:17,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2906 transitions. [2021-12-16 01:07:17,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:17,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:17,607 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] [2021-12-16 01:07:17,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:07:17,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:17,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:17,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1717887823, now seen corresponding path program 1 times [2021-12-16 01:07:17,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772719192] [2021-12-16 01:07:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:17,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:17,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:17,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:17,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772719192] [2021-12-16 01:07:17,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772719192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:17,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:17,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:17,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351226935] [2021-12-16 01:07:17,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:17,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:17,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:17,713 INFO L87 Difference]: Start difference. First operand 1891 states and 2906 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:19,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:19,119 INFO L93 Difference]: Finished difference Result 6554 states and 10220 transitions. [2021-12-16 01:07:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:07:19,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:19,136 INFO L225 Difference]: With dead ends: 6554 [2021-12-16 01:07:19,137 INFO L226 Difference]: Without dead ends: 4677 [2021-12-16 01:07:19,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:07:19,143 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 862 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:19,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 1703 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:07:19,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4677 states. [2021-12-16 01:07:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4677 to 3552. [2021-12-16 01:07:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3552 states, 3173 states have (on average 1.5319886542704066) internal successors, (4861), 3190 states have internal predecessors, (4861), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2021-12-16 01:07:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 5478 transitions. [2021-12-16 01:07:19,288 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 5478 transitions. Word has length 111 [2021-12-16 01:07:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:19,288 INFO L470 AbstractCegarLoop]: Abstraction has 3552 states and 5478 transitions. [2021-12-16 01:07:19,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 5478 transitions. [2021-12-16 01:07:19,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:19,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:19,291 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] [2021-12-16 01:07:19,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 01:07:19,292 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 159175407, now seen corresponding path program 1 times [2021-12-16 01:07:19,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377527127] [2021-12-16 01:07:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:19,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:19,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:19,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:19,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377527127] [2021-12-16 01:07:19,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377527127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:19,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:19,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:19,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122026105] [2021-12-16 01:07:19,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:19,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:19,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:19,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:19,382 INFO L87 Difference]: Start difference. First operand 3552 states and 5478 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:20,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:20,910 INFO L93 Difference]: Finished difference Result 12493 states and 19534 transitions. [2021-12-16 01:07:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 01:07:20,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:20,949 INFO L225 Difference]: With dead ends: 12493 [2021-12-16 01:07:20,950 INFO L226 Difference]: Without dead ends: 8955 [2021-12-16 01:07:20,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-16 01:07:20,964 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 861 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:20,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 1698 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1688 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:07:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8955 states. [2021-12-16 01:07:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8955 to 6889. [2021-12-16 01:07:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6889 states, 6158 states have (on average 1.5302046118869763) internal successors, (9423), 6191 states have internal predecessors, (9423), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2021-12-16 01:07:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10698 transitions. [2021-12-16 01:07:21,291 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10698 transitions. Word has length 111 [2021-12-16 01:07:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:21,291 INFO L470 AbstractCegarLoop]: Abstraction has 6889 states and 10698 transitions. [2021-12-16 01:07:21,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10698 transitions. [2021-12-16 01:07:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:21,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:21,297 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] [2021-12-16 01:07:21,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:07:21,298 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -611558159, now seen corresponding path program 1 times [2021-12-16 01:07:21,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493811077] [2021-12-16 01:07:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:21,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:21,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:21,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493811077] [2021-12-16 01:07:21,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493811077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:21,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:21,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:21,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902720262] [2021-12-16 01:07:21,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:21,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:21,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:21,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:21,413 INFO L87 Difference]: Start difference. First operand 6889 states and 10698 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:23,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:23,402 INFO L93 Difference]: Finished difference Result 27348 states and 42838 transitions. [2021-12-16 01:07:23,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:07:23,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:23,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:23,501 INFO L225 Difference]: With dead ends: 27348 [2021-12-16 01:07:23,502 INFO L226 Difference]: Without dead ends: 20473 [2021-12-16 01:07:23,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:07:23,532 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1112 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:23,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 1683 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 01:07:23,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20473 states. [2021-12-16 01:07:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20473 to 13498. [2021-12-16 01:07:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13498 states, 12095 states have (on average 1.5319553534518395) internal successors, (18529), 12160 states have internal predecessors, (18529), 948 states have call successors, (948), 390 states have call predecessors, (948), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2021-12-16 01:07:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13498 states to 13498 states and 21218 transitions. [2021-12-16 01:07:24,198 INFO L78 Accepts]: Start accepts. Automaton has 13498 states and 21218 transitions. Word has length 111 [2021-12-16 01:07:24,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:24,198 INFO L470 AbstractCegarLoop]: Abstraction has 13498 states and 21218 transitions. [2021-12-16 01:07:24,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:24,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13498 states and 21218 transitions. [2021-12-16 01:07:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:24,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:24,209 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] [2021-12-16 01:07:24,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:07:24,209 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1606251857, now seen corresponding path program 1 times [2021-12-16 01:07:24,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:24,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221572723] [2021-12-16 01:07:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:24,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:24,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:24,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:24,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221572723] [2021-12-16 01:07:24,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221572723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:24,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:24,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:24,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800144621] [2021-12-16 01:07:24,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:24,293 INFO L87 Difference]: Start difference. First operand 13498 states and 21218 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:27,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:27,108 INFO L93 Difference]: Finished difference Result 53027 states and 83964 transitions. [2021-12-16 01:07:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:07:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:27,304 INFO L225 Difference]: With dead ends: 53027 [2021-12-16 01:07:27,304 INFO L226 Difference]: Without dead ends: 39543 [2021-12-16 01:07:27,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:07:27,349 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 911 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:27,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1766 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:07:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39543 states. [2021-12-16 01:07:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39543 to 26363. [2021-12-16 01:07:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26363 states, 23648 states have (on average 1.5332797699594045) internal successors, (36259), 23777 states have internal predecessors, (36259), 1812 states have call successors, (1812), 774 states have call predecessors, (1812), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2021-12-16 01:07:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26363 states to 26363 states and 42198 transitions. [2021-12-16 01:07:28,486 INFO L78 Accepts]: Start accepts. Automaton has 26363 states and 42198 transitions. Word has length 111 [2021-12-16 01:07:28,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:28,486 INFO L470 AbstractCegarLoop]: Abstraction has 26363 states and 42198 transitions. [2021-12-16 01:07:28,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 26363 states and 42198 transitions. [2021-12-16 01:07:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:28,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:28,503 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] [2021-12-16 01:07:28,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:07:28,504 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:28,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:28,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2102439217, now seen corresponding path program 1 times [2021-12-16 01:07:28,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:28,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079291037] [2021-12-16 01:07:28,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:28,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:28,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:28,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079291037] [2021-12-16 01:07:28,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079291037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:28,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:28,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:28,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550403919] [2021-12-16 01:07:28,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:28,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:28,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:28,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:28,584 INFO L87 Difference]: Start difference. First operand 26363 states and 42198 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:32,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:32,785 INFO L93 Difference]: Finished difference Result 102242 states and 164674 transitions. [2021-12-16 01:07:32,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:07:32,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:32,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:33,067 INFO L225 Difference]: With dead ends: 102242 [2021-12-16 01:07:33,067 INFO L226 Difference]: Without dead ends: 75893 [2021-12-16 01:07:33,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:07:33,157 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 1032 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:33,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 1673 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 01:07:33,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75893 states. [2021-12-16 01:07:35,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75893 to 52348. [2021-12-16 01:07:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52348 states, 47073 states have (on average 1.5357636012151339) internal successors, (72293), 47330 states have internal predecessors, (72293), 3476 states have call successors, (3476), 1542 states have call predecessors, (3476), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2021-12-16 01:07:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52348 states to 52348 states and 86062 transitions. [2021-12-16 01:07:36,056 INFO L78 Accepts]: Start accepts. Automaton has 52348 states and 86062 transitions. Word has length 111 [2021-12-16 01:07:36,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:36,056 INFO L470 AbstractCegarLoop]: Abstraction has 52348 states and 86062 transitions. [2021-12-16 01:07:36,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 52348 states and 86062 transitions. [2021-12-16 01:07:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:36,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:36,085 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] [2021-12-16 01:07:36,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:07:36,085 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:36,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash 143864431, now seen corresponding path program 1 times [2021-12-16 01:07:36,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:36,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058668494] [2021-12-16 01:07:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:36,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:36,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:36,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:36,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058668494] [2021-12-16 01:07:36,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058668494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:36,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:36,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:36,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252241438] [2021-12-16 01:07:36,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:36,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:36,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:36,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:36,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:36,153 INFO L87 Difference]: Start difference. First operand 52348 states and 86062 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:07:43,239 INFO L93 Difference]: Finished difference Result 199137 states and 329560 transitions. [2021-12-16 01:07:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 01:07:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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 111 [2021-12-16 01:07:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:07:43,799 INFO L225 Difference]: With dead ends: 199137 [2021-12-16 01:07:43,800 INFO L226 Difference]: Without dead ends: 146803 [2021-12-16 01:07:43,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:07:43,960 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 1046 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:07:43,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 1181 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:07:44,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146803 states. [2021-12-16 01:07:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146803 to 104189. [2021-12-16 01:07:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104189 states, 93922 states have (on average 1.5383722663486723) internal successors, (144487), 94435 states have internal predecessors, (144487), 6676 states have call successors, (6676), 3078 states have call predecessors, (6676), 3590 states have return successors, (26871), 7187 states have call predecessors, (26871), 6676 states have call successors, (26871) [2021-12-16 01:07:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104189 states to 104189 states and 178034 transitions. [2021-12-16 01:07:49,333 INFO L78 Accepts]: Start accepts. Automaton has 104189 states and 178034 transitions. Word has length 111 [2021-12-16 01:07:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:07:49,333 INFO L470 AbstractCegarLoop]: Abstraction has 104189 states and 178034 transitions. [2021-12-16 01:07:49,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 01:07:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 104189 states and 178034 transitions. [2021-12-16 01:07:49,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 01:07:49,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:07:49,392 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] [2021-12-16 01:07:49,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:07:49,393 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:07:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:07:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2020347249, now seen corresponding path program 1 times [2021-12-16 01:07:49,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:07:49,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505561200] [2021-12-16 01:07:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:07:49,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:07:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:07:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:07:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 01:07:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 01:07:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 01:07:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:07:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:07:49,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:07:49,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505561200] [2021-12-16 01:07:49,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505561200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:07:49,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:07:49,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:07:49,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614383888] [2021-12-16 01:07:49,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:07:49,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:07:49,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:07:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:07:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:07:49,461 INFO L87 Difference]: Start difference. First operand 104189 states and 178034 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 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)