./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39c77cf00428880e24d066dff5fe9610612ae1f22999f65a4af3f1456418d087 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:01:02,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:01:02,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:01:02,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:01:02,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:01:02,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:01:02,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:01:02,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:01:02,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:01:02,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:01:02,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:01:02,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:01:02,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:01:02,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:01:02,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:01:02,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:01:02,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:01:02,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:01:02,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:01:02,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:01:02,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:01:02,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:01:02,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:01:02,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:01:02,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:01:02,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:01:02,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:01:02,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:01:02,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:01:02,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:01:02,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:01:02,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:01:02,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:01:02,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:01:02,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:01:02,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:01:02,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:01:02,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:01:02,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:01:02,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:01:02,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:01:02,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:01:02,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:01:02,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:01:02,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:01:02,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:01:02,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:01:02,189 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:01:02,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:01:02,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:01:02,190 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:01:02,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:01:02,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:01:02,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:01:02,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:01:02,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:01:02,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:02,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:01:02,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:01:02,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:01:02,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39c77cf00428880e24d066dff5fe9610612ae1f22999f65a4af3f1456418d087 [2021-12-16 02:01:02,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:01:02,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:01:02,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:01:02,538 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:01:02,549 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:01:02,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c [2021-12-16 02:01:02,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622c96099/3a51289a58e84a9598100d4ce289276e/FLAG547800183 [2021-12-16 02:01:03,435 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:01:03,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c [2021-12-16 02:01:03,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622c96099/3a51289a58e84a9598100d4ce289276e/FLAG547800183 [2021-12-16 02:01:03,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/622c96099/3a51289a58e84a9598100d4ce289276e [2021-12-16 02:01:03,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:01:03,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:01:03,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:03,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:01:03,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:01:03,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:03" (1/1) ... [2021-12-16 02:01:03,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1077525b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:03, skipping insertion in model container [2021-12-16 02:01:03,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:01:03" (1/1) ... [2021-12-16 02:01:04,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:01:04,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:01:05,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c[382357,382370] [2021-12-16 02:01:05,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c[383339,383352] [2021-12-16 02:01:06,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:06,026 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:01:06,781 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c[382357,382370] [2021-12-16 02:01:06,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.13.cil-1.c[383339,383352] [2021-12-16 02:01:06,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:01:06,924 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:01:06,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06 WrapperNode [2021-12-16 02:01:06,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:01:06,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:06,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:01:06,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:01:06,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,431 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-16 02:01:07,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:01:07,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:01:07,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:01:07,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:01:07,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:07,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:01:07,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:01:07,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:01:07,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:01:07,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (1/1) ... [2021-12-16 02:01:08,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:01:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:01:08,054 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 02:01:08,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 02:01:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:01:08,102 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-16 02:01:08,103 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-16 02:01:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-16 02:01:08,103 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-16 02:01:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-16 02:01:08,103 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-16 02:01:08,103 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-16 02:01:08,104 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-16 02:01:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-16 02:01:08,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-16 02:01:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-16 02:01:08,104 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-16 02:01:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-16 02:01:08,104 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-16 02:01:08,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:01:08,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:01:08,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:01:08,285 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:01:08,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:01:13,972 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:01:13,993 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:01:13,993 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-16 02:01:13,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:13 BoogieIcfgContainer [2021-12-16 02:01:13,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:01:13,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:01:13,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:01:14,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:01:14,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:01:03" (1/3) ... [2021-12-16 02:01:14,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:14, skipping insertion in model container [2021-12-16 02:01:14,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:01:06" (2/3) ... [2021-12-16 02:01:14,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c3fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:01:14, skipping insertion in model container [2021-12-16 02:01:14,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:01:13" (3/3) ... [2021-12-16 02:01:14,003 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.13.cil-1.c [2021-12-16 02:01:14,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:01:14,007 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:01:14,067 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:01:14,086 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:01:14,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:01:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-16 02:01:14,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:14,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:14,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:14,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:14,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:14,232 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-16 02:01:14,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:14,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016321679] [2021-12-16 02:01:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:14,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:14,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016321679] [2021-12-16 02:01:14,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016321679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:14,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:14,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:01:14,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005975604] [2021-12-16 02:01:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:14,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:01:14,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:14,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:01:14,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:01:14,771 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:17,021 INFO L93 Difference]: Finished difference Result 5340 states and 9793 transitions. [2021-12-16 02:01:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:17,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:17,041 INFO L225 Difference]: With dead ends: 5340 [2021-12-16 02:01:17,042 INFO L226 Difference]: Without dead ends: 2683 [2021-12-16 02:01:17,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:17,051 INFO L933 BasicCegarLoop]: 4741 mSDtfsCounter, 1121 mSDsluCounter, 12530 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:17,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 17271 Invalid, 821 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:01:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-16 02:01:17,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-16 02:01:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2021-12-16 02:01:17,172 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2021-12-16 02:01:17,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:17,173 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2021-12-16 02:01:17,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2021-12-16 02:01:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:17,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:17,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:17,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:01:17,181 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:17,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:17,183 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2021-12-16 02:01:17,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:17,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368592533] [2021-12-16 02:01:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:17,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:17,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:17,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:17,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368592533] [2021-12-16 02:01:17,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368592533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:17,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:17,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:01:17,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813055599] [2021-12-16 02:01:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:17,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:01:17,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:17,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:01:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:01:17,437 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:19,005 INFO L93 Difference]: Finished difference Result 3075 states and 5487 transitions. [2021-12-16 02:01:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:19,022 INFO L225 Difference]: With dead ends: 3075 [2021-12-16 02:01:19,022 INFO L226 Difference]: Without dead ends: 2683 [2021-12-16 02:01:19,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:19,028 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 1107 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16998 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:19,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 16998 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-16 02:01:19,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-16 02:01:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2021-12-16 02:01:19,132 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2021-12-16 02:01:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:19,134 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2021-12-16 02:01:19,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2021-12-16 02:01:19,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:19,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:19,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:19,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:01:19,139 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2021-12-16 02:01:19,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:19,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338368630] [2021-12-16 02:01:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:19,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:19,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:19,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338368630] [2021-12-16 02:01:19,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338368630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:19,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:19,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:01:19,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040217119] [2021-12-16 02:01:19,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:19,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:01:19,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:01:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:01:19,367 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:21,318 INFO L93 Difference]: Finished difference Result 3070 states and 5479 transitions. [2021-12-16 02:01:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:21,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:21,330 INFO L225 Difference]: With dead ends: 3070 [2021-12-16 02:01:21,330 INFO L226 Difference]: Without dead ends: 2682 [2021-12-16 02:01:21,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-16 02:01:21,334 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 5056 mSDsluCounter, 12608 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 17233 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:21,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5077 Valid, 17233 Invalid, 1491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:01:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-16 02:01:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2530. [2021-12-16 02:01:21,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.823906939430405) internal successors, (4547), 2496 states have internal predecessors, (4547), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4603 transitions. [2021-12-16 02:01:21,432 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4603 transitions. Word has length 190 [2021-12-16 02:01:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:21,432 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4603 transitions. [2021-12-16 02:01:21,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4603 transitions. [2021-12-16 02:01:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:21,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:21,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:21,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:01:21,437 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:21,438 INFO L85 PathProgramCache]: Analyzing trace with hash 291765624, now seen corresponding path program 1 times [2021-12-16 02:01:21,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:21,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383716433] [2021-12-16 02:01:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:21,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:21,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:21,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383716433] [2021-12-16 02:01:21,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383716433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:21,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:21,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:21,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401691458] [2021-12-16 02:01:21,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:21,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:21,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:21,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:21,627 INFO L87 Difference]: Start difference. First operand 2530 states and 4603 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:23,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:23,094 INFO L93 Difference]: Finished difference Result 3069 states and 5477 transitions. [2021-12-16 02:01:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:01:23,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:23,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:23,107 INFO L225 Difference]: With dead ends: 3069 [2021-12-16 02:01:23,110 INFO L226 Difference]: Without dead ends: 2681 [2021-12-16 02:01:23,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 02:01:23,124 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5339 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:23,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5360 Valid, 17302 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-16 02:01:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2530. [2021-12-16 02:01:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8227035699959888) internal successors, (4544), 2496 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4600 transitions. [2021-12-16 02:01:23,219 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4600 transitions. Word has length 190 [2021-12-16 02:01:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:23,220 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4600 transitions. [2021-12-16 02:01:23,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4600 transitions. [2021-12-16 02:01:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:23,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:23,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:23,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:01:23,224 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1984573188, now seen corresponding path program 1 times [2021-12-16 02:01:23,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:23,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115012203] [2021-12-16 02:01:23,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:23,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:23,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115012203] [2021-12-16 02:01:23,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115012203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:23,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:23,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807570306] [2021-12-16 02:01:23,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:23,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:23,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:23,380 INFO L87 Difference]: Start difference. First operand 2530 states and 4600 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:25,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:25,114 INFO L93 Difference]: Finished difference Result 3095 states and 5519 transitions. [2021-12-16 02:01:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:25,140 INFO L225 Difference]: With dead ends: 3095 [2021-12-16 02:01:25,140 INFO L226 Difference]: Without dead ends: 2707 [2021-12-16 02:01:25,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:25,146 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 5333 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5354 SdHoareTripleChecker+Valid, 17348 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:25,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5354 Valid, 17348 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:01:25,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-12-16 02:01:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2530. [2021-12-16 02:01:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8223024468511833) internal successors, (4543), 2496 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:25,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4599 transitions. [2021-12-16 02:01:25,242 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4599 transitions. Word has length 190 [2021-12-16 02:01:25,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:25,242 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4599 transitions. [2021-12-16 02:01:25,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4599 transitions. [2021-12-16 02:01:25,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:25,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:25,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:25,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:01:25,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1486016386, now seen corresponding path program 1 times [2021-12-16 02:01:25,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:25,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879004711] [2021-12-16 02:01:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:25,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:25,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:25,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879004711] [2021-12-16 02:01:25,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879004711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:25,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:25,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:25,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479208894] [2021-12-16 02:01:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:25,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:25,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:25,405 INFO L87 Difference]: Start difference. First operand 2530 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:27,369 INFO L93 Difference]: Finished difference Result 3094 states and 5514 transitions. [2021-12-16 02:01:27,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:27,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:27,377 INFO L225 Difference]: With dead ends: 3094 [2021-12-16 02:01:27,377 INFO L226 Difference]: Without dead ends: 2706 [2021-12-16 02:01:27,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:27,380 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5153 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:27,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5174 Valid, 21517 Invalid, 1680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:01:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-12-16 02:01:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2530. [2021-12-16 02:01:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.821901323706378) internal successors, (4542), 2496 states have internal predecessors, (4542), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-16 02:01:27,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4598 transitions. [2021-12-16 02:01:27,426 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4598 transitions. Word has length 190 [2021-12-16 02:01:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:27,426 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4598 transitions. [2021-12-16 02:01:27,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:27,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4598 transitions. [2021-12-16 02:01:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:27,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:27,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:27,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:01:27,429 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -915744580, now seen corresponding path program 1 times [2021-12-16 02:01:27,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:27,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681924572] [2021-12-16 02:01:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:27,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:27,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:27,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681924572] [2021-12-16 02:01:27,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681924572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:27,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:27,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:01:27,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090902635] [2021-12-16 02:01:27,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:27,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:01:27,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:01:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:27,559 INFO L87 Difference]: Start difference. First operand 2530 states and 4598 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:31,392 INFO L93 Difference]: Finished difference Result 3654 states and 6411 transitions. [2021-12-16 02:01:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:01:31,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:31,403 INFO L225 Difference]: With dead ends: 3654 [2021-12-16 02:01:31,404 INFO L226 Difference]: Without dead ends: 3266 [2021-12-16 02:01:31,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:01:31,406 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 5809 mSDsluCounter, 22669 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5830 SdHoareTripleChecker+Valid, 27707 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:31,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5830 Valid, 27707 Invalid, 3460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-16 02:01:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2021-12-16 02:01:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2936. [2021-12-16 02:01:31,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7908678982223771) internal successors, (5138), 2873 states have internal predecessors, (5138), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5243 transitions. [2021-12-16 02:01:31,489 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5243 transitions. Word has length 190 [2021-12-16 02:01:31,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:31,489 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5243 transitions. [2021-12-16 02:01:31,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5243 transitions. [2021-12-16 02:01:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:31,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:31,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:31,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:01:31,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 488124606, now seen corresponding path program 1 times [2021-12-16 02:01:31,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:31,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899952540] [2021-12-16 02:01:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:31,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:31,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:31,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:31,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899952540] [2021-12-16 02:01:31,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899952540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:31,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:31,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:31,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142760885] [2021-12-16 02:01:31,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:31,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:31,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:31,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:31,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:31,618 INFO L87 Difference]: Start difference. First operand 2936 states and 5243 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:33,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:33,062 INFO L93 Difference]: Finished difference Result 4101 states and 7141 transitions. [2021-12-16 02:01:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:33,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:33,098 INFO L225 Difference]: With dead ends: 4101 [2021-12-16 02:01:33,099 INFO L226 Difference]: Without dead ends: 3307 [2021-12-16 02:01:33,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:33,130 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 5416 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 17289 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:33,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5437 Valid, 17289 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:33,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-12-16 02:01:33,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2936. [2021-12-16 02:01:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7901707912164517) internal successors, (5136), 2873 states have internal predecessors, (5136), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5241 transitions. [2021-12-16 02:01:33,214 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5241 transitions. Word has length 190 [2021-12-16 02:01:33,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:33,214 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5241 transitions. [2021-12-16 02:01:33,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:33,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5241 transitions. [2021-12-16 02:01:33,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:33,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:33,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:33,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:01:33,217 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash -297873284, now seen corresponding path program 1 times [2021-12-16 02:01:33,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:33,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356412183] [2021-12-16 02:01:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:33,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:33,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:33,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356412183] [2021-12-16 02:01:33,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356412183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:33,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:33,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:33,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67765924] [2021-12-16 02:01:33,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:33,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:33,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:33,350 INFO L87 Difference]: Start difference. First operand 2936 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:34,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:34,797 INFO L93 Difference]: Finished difference Result 4098 states and 7129 transitions. [2021-12-16 02:01:34,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:34,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:34,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:34,806 INFO L225 Difference]: With dead ends: 4098 [2021-12-16 02:01:34,807 INFO L226 Difference]: Without dead ends: 3304 [2021-12-16 02:01:34,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:34,814 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5328 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 17332 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:34,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 17332 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 02:01:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2021-12-16 02:01:34,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2936. [2021-12-16 02:01:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7894736842105263) internal successors, (5134), 2873 states have internal predecessors, (5134), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5239 transitions. [2021-12-16 02:01:34,996 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5239 transitions. Word has length 190 [2021-12-16 02:01:34,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:34,996 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5239 transitions. [2021-12-16 02:01:34,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5239 transitions. [2021-12-16 02:01:34,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:34,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:34,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:34,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:01:34,999 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:35,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:35,001 INFO L85 PathProgramCache]: Analyzing trace with hash 369508606, now seen corresponding path program 1 times [2021-12-16 02:01:35,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:35,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774656744] [2021-12-16 02:01:35,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:35,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:35,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774656744] [2021-12-16 02:01:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774656744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:35,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:35,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:35,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069453094] [2021-12-16 02:01:35,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:35,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:35,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:35,172 INFO L87 Difference]: Start difference. First operand 2936 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:36,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:36,958 INFO L93 Difference]: Finished difference Result 4095 states and 7117 transitions. [2021-12-16 02:01:36,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:36,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:36,965 INFO L225 Difference]: With dead ends: 4095 [2021-12-16 02:01:36,966 INFO L226 Difference]: Without dead ends: 3301 [2021-12-16 02:01:36,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:36,971 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5148 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:36,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 21501 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-16 02:01:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-12-16 02:01:37,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2936. [2021-12-16 02:01:37,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.788776577204601) internal successors, (5132), 2873 states have internal predecessors, (5132), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:37,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5237 transitions. [2021-12-16 02:01:37,047 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5237 transitions. Word has length 190 [2021-12-16 02:01:37,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:37,048 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5237 transitions. [2021-12-16 02:01:37,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5237 transitions. [2021-12-16 02:01:37,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:37,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:37,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:37,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:01:37,051 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1825720260, now seen corresponding path program 1 times [2021-12-16 02:01:37,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:37,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373363727] [2021-12-16 02:01:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:37,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:37,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:37,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373363727] [2021-12-16 02:01:37,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373363727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:37,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:37,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:37,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577504543] [2021-12-16 02:01:37,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:37,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:37,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:37,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:37,207 INFO L87 Difference]: Start difference. First operand 2936 states and 5237 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:38,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:38,484 INFO L93 Difference]: Finished difference Result 4092 states and 7105 transitions. [2021-12-16 02:01:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:38,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:38,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:38,492 INFO L225 Difference]: With dead ends: 4092 [2021-12-16 02:01:38,492 INFO L226 Difference]: Without dead ends: 3298 [2021-12-16 02:01:38,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:38,497 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 5327 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 17322 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:38,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 17322 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-12-16 02:01:38,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2936. [2021-12-16 02:01:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7880794701986755) internal successors, (5130), 2873 states have internal predecessors, (5130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5235 transitions. [2021-12-16 02:01:38,580 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5235 transitions. Word has length 190 [2021-12-16 02:01:38,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:38,581 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5235 transitions. [2021-12-16 02:01:38,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5235 transitions. [2021-12-16 02:01:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:38,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:38,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:38,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:01:38,584 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:38,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1480892098, now seen corresponding path program 1 times [2021-12-16 02:01:38,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:38,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806278295] [2021-12-16 02:01:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:38,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:38,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:38,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806278295] [2021-12-16 02:01:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806278295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:38,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:38,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369617092] [2021-12-16 02:01:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:38,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:38,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:38,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:38,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:38,711 INFO L87 Difference]: Start difference. First operand 2936 states and 5235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:40,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:40,764 INFO L93 Difference]: Finished difference Result 4086 states and 7087 transitions. [2021-12-16 02:01:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:40,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:40,773 INFO L225 Difference]: With dead ends: 4086 [2021-12-16 02:01:40,774 INFO L226 Difference]: Without dead ends: 3292 [2021-12-16 02:01:40,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:40,778 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5145 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 21489 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:40,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 21489 Invalid, 1608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-16 02:01:40,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-16 02:01:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2936. [2021-12-16 02:01:40,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7873823631927501) internal successors, (5128), 2873 states have internal predecessors, (5128), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:40,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5233 transitions. [2021-12-16 02:01:40,904 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5233 transitions. Word has length 190 [2021-12-16 02:01:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:40,905 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5233 transitions. [2021-12-16 02:01:40,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:40,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5233 transitions. [2021-12-16 02:01:40,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:40,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:40,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:40,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:01:40,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:40,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:40,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1044603584, now seen corresponding path program 1 times [2021-12-16 02:01:40,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:40,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600907611] [2021-12-16 02:01:40,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:40,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:40,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:41,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:41,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:41,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600907611] [2021-12-16 02:01:41,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600907611] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:41,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:41,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:41,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890326903] [2021-12-16 02:01:41,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:41,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:41,106 INFO L87 Difference]: Start difference. First operand 2936 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:43,027 INFO L93 Difference]: Finished difference Result 4083 states and 7075 transitions. [2021-12-16 02:01:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:43,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:43,060 INFO L225 Difference]: With dead ends: 4083 [2021-12-16 02:01:43,060 INFO L226 Difference]: Without dead ends: 3289 [2021-12-16 02:01:43,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:43,064 INFO L933 BasicCegarLoop]: 4626 mSDtfsCounter, 5143 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 21485 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:43,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 21485 Invalid, 1596 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:01:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-16 02:01:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2936. [2021-12-16 02:01:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7866852561868247) internal successors, (5126), 2873 states have internal predecessors, (5126), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5231 transitions. [2021-12-16 02:01:43,169 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5231 transitions. Word has length 190 [2021-12-16 02:01:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:43,170 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5231 transitions. [2021-12-16 02:01:43,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5231 transitions. [2021-12-16 02:01:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:43,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:43,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:43,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:01:43,173 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:43,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 433334526, now seen corresponding path program 1 times [2021-12-16 02:01:43,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:43,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013426513] [2021-12-16 02:01:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:43,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:43,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:43,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013426513] [2021-12-16 02:01:43,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013426513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:43,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:43,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:43,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335374970] [2021-12-16 02:01:43,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:43,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:43,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:43,323 INFO L87 Difference]: Start difference. First operand 2936 states and 5231 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:45,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:45,314 INFO L93 Difference]: Finished difference Result 4080 states and 7063 transitions. [2021-12-16 02:01:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:45,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:45,322 INFO L225 Difference]: With dead ends: 4080 [2021-12-16 02:01:45,323 INFO L226 Difference]: Without dead ends: 3286 [2021-12-16 02:01:45,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:45,327 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 5141 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:45,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21481 Invalid, 1584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-16 02:01:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-16 02:01:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2936. [2021-12-16 02:01:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7859881491808993) internal successors, (5124), 2873 states have internal predecessors, (5124), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5229 transitions. [2021-12-16 02:01:45,414 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5229 transitions. Word has length 190 [2021-12-16 02:01:45,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:45,414 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5229 transitions. [2021-12-16 02:01:45,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5229 transitions. [2021-12-16 02:01:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:45,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:45,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:45,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:01:45,417 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -971857152, now seen corresponding path program 1 times [2021-12-16 02:01:45,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:45,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326565691] [2021-12-16 02:01:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:45,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:45,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:45,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326565691] [2021-12-16 02:01:45,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326565691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:45,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:45,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:45,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802145520] [2021-12-16 02:01:45,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:45,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:45,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:45,559 INFO L87 Difference]: Start difference. First operand 2936 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:46,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:46,878 INFO L93 Difference]: Finished difference Result 4077 states and 7051 transitions. [2021-12-16 02:01:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:46,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:46,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:46,905 INFO L225 Difference]: With dead ends: 4077 [2021-12-16 02:01:46,915 INFO L226 Difference]: Without dead ends: 3283 [2021-12-16 02:01:46,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:46,921 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5369 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:46,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 17271 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 02:01:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-12-16 02:01:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2936. [2021-12-16 02:01:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.785291042174974) internal successors, (5122), 2873 states have internal predecessors, (5122), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5227 transitions. [2021-12-16 02:01:47,044 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5227 transitions. Word has length 190 [2021-12-16 02:01:47,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:47,044 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5227 transitions. [2021-12-16 02:01:47,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:47,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5227 transitions. [2021-12-16 02:01:47,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:47,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:47,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:47,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:01:47,047 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash 922476734, now seen corresponding path program 1 times [2021-12-16 02:01:47,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637741826] [2021-12-16 02:01:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:47,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:47,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:47,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:47,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637741826] [2021-12-16 02:01:47,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637741826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:47,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:47,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:47,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170119099] [2021-12-16 02:01:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:47,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:47,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:47,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:47,172 INFO L87 Difference]: Start difference. First operand 2936 states and 5227 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:48,611 INFO L93 Difference]: Finished difference Result 4074 states and 7039 transitions. [2021-12-16 02:01:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:48,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:48,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:48,619 INFO L225 Difference]: With dead ends: 4074 [2021-12-16 02:01:48,620 INFO L226 Difference]: Without dead ends: 3280 [2021-12-16 02:01:48,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:48,624 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5313 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17298 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:48,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17298 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-16 02:01:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2936. [2021-12-16 02:01:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7845939351690485) internal successors, (5120), 2873 states have internal predecessors, (5120), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5225 transitions. [2021-12-16 02:01:48,698 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5225 transitions. Word has length 190 [2021-12-16 02:01:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:48,699 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5225 transitions. [2021-12-16 02:01:48,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5225 transitions. [2021-12-16 02:01:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:48,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:48,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:48,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:01:48,701 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:48,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:48,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1925909696, now seen corresponding path program 1 times [2021-12-16 02:01:48,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:48,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062253523] [2021-12-16 02:01:48,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:48,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:48,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:48,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:48,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062253523] [2021-12-16 02:01:48,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062253523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:48,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:48,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:48,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357967893] [2021-12-16 02:01:48,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:48,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:48,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:48,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:48,824 INFO L87 Difference]: Start difference. First operand 2936 states and 5225 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:50,230 INFO L93 Difference]: Finished difference Result 4071 states and 7027 transitions. [2021-12-16 02:01:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:50,251 INFO L225 Difference]: With dead ends: 4071 [2021-12-16 02:01:50,251 INFO L226 Difference]: Without dead ends: 3277 [2021-12-16 02:01:50,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:50,254 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21467 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-16 02:01:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2936. [2021-12-16 02:01:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7838968281631231) internal successors, (5118), 2873 states have internal predecessors, (5118), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5223 transitions. [2021-12-16 02:01:50,327 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5223 transitions. Word has length 190 [2021-12-16 02:01:50,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:50,327 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5223 transitions. [2021-12-16 02:01:50,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5223 transitions. [2021-12-16 02:01:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:50,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:50,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:50,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:01:50,329 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1445890174, now seen corresponding path program 1 times [2021-12-16 02:01:50,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:50,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55147459] [2021-12-16 02:01:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:50,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:50,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:50,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55147459] [2021-12-16 02:01:50,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55147459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:50,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:50,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:50,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509326266] [2021-12-16 02:01:50,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:50,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:50,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:50,482 INFO L87 Difference]: Start difference. First operand 2936 states and 5223 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:52,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:52,413 INFO L93 Difference]: Finished difference Result 4068 states and 7015 transitions. [2021-12-16 02:01:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:52,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:52,421 INFO L225 Difference]: With dead ends: 4068 [2021-12-16 02:01:52,421 INFO L226 Difference]: Without dead ends: 3274 [2021-12-16 02:01:52,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:52,425 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:52,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21461 Invalid, 1540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:01:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-16 02:01:52,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2936. [2021-12-16 02:01:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7831997211571977) internal successors, (5116), 2873 states have internal predecessors, (5116), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5221 transitions. [2021-12-16 02:01:52,520 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5221 transitions. Word has length 190 [2021-12-16 02:01:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:52,520 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5221 transitions. [2021-12-16 02:01:52,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5221 transitions. [2021-12-16 02:01:52,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:52,523 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:52,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:52,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:01:52,523 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1831752576, now seen corresponding path program 1 times [2021-12-16 02:01:52,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:52,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281145409] [2021-12-16 02:01:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:52,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:52,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:52,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281145409] [2021-12-16 02:01:52,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281145409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:52,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:52,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:52,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120200294] [2021-12-16 02:01:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:52,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:52,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:52,701 INFO L87 Difference]: Start difference. First operand 2936 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:54,216 INFO L93 Difference]: Finished difference Result 4062 states and 6997 transitions. [2021-12-16 02:01:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:54,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:54,223 INFO L225 Difference]: With dead ends: 4062 [2021-12-16 02:01:54,223 INFO L226 Difference]: Without dead ends: 3268 [2021-12-16 02:01:54,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:54,227 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5308 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 17282 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:54,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 17282 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-16 02:01:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-16 02:01:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2936. [2021-12-16 02:01:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7825026141512723) internal successors, (5114), 2873 states have internal predecessors, (5114), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5219 transitions. [2021-12-16 02:01:54,335 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5219 transitions. Word has length 190 [2021-12-16 02:01:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:54,335 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5219 transitions. [2021-12-16 02:01:54,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5219 transitions. [2021-12-16 02:01:54,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:54,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:54,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:54,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:01:54,339 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:54,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:54,340 INFO L85 PathProgramCache]: Analyzing trace with hash -532089086, now seen corresponding path program 1 times [2021-12-16 02:01:54,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:54,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334988035] [2021-12-16 02:01:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:54,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:54,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:54,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334988035] [2021-12-16 02:01:54,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334988035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:54,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:54,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:01:54,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270334790] [2021-12-16 02:01:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:54,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:01:54,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:01:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:01:54,472 INFO L87 Difference]: Start difference. First operand 2936 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:01:56,385 INFO L93 Difference]: Finished difference Result 4059 states and 6985 transitions. [2021-12-16 02:01:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:01:56,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:01:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:01:56,391 INFO L225 Difference]: With dead ends: 4059 [2021-12-16 02:01:56,391 INFO L226 Difference]: Without dead ends: 3265 [2021-12-16 02:01:56,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:01:56,394 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 5128 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5149 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-16 02:01:56,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5149 Valid, 21451 Invalid, 1510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-16 02:01:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-16 02:01:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2936. [2021-12-16 02:01:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.781805507145347) internal successors, (5112), 2873 states have internal predecessors, (5112), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-16 02:01:56,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5217 transitions. [2021-12-16 02:01:56,482 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5217 transitions. Word has length 190 [2021-12-16 02:01:56,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:01:56,482 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5217 transitions. [2021-12-16 02:01:56,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:01:56,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5217 transitions. [2021-12-16 02:01:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:01:56,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:01:56,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:01:56,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 02:01:56,485 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:01:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:01:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1855268032, now seen corresponding path program 1 times [2021-12-16 02:01:56,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:01:56,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051653206] [2021-12-16 02:01:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:01:56,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:01:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:01:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:01:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:01:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:01:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:01:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:01:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:01:56,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:01:56,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051653206] [2021-12-16 02:01:56,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051653206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:01:56,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:01:56,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:01:56,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439039068] [2021-12-16 02:01:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:01:56,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:01:56,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:01:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:01:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:01:56,608 INFO L87 Difference]: Start difference. First operand 2936 states and 5217 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:00,654 INFO L93 Difference]: Finished difference Result 5358 states and 9027 transitions. [2021-12-16 02:02:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 02:02:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:02:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:00,663 INFO L225 Difference]: With dead ends: 5358 [2021-12-16 02:02:00,663 INFO L226 Difference]: Without dead ends: 4564 [2021-12-16 02:02:00,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:02:00,667 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5948 mSDsluCounter, 22653 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5984 SdHoareTripleChecker+Valid, 27592 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:00,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5984 Valid, 27592 Invalid, 3074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-16 02:02:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-16 02:02:00,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3742. [2021-12-16 02:02:00,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7336099585062241) internal successors, (6267), 3623 states have internal predecessors, (6267), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:02:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6472 transitions. [2021-12-16 02:02:00,815 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6472 transitions. Word has length 190 [2021-12-16 02:02:00,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:00,815 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6472 transitions. [2021-12-16 02:02:00,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:00,815 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6472 transitions. [2021-12-16 02:02:00,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:02:00,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:00,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:00,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 02:02:00,817 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:00,817 INFO L85 PathProgramCache]: Analyzing trace with hash 41711426, now seen corresponding path program 1 times [2021-12-16 02:02:00,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:00,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310764353] [2021-12-16 02:02:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:00,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:00,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:00,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:00,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310764353] [2021-12-16 02:02:00,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310764353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:00,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:00,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:00,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066007261] [2021-12-16 02:02:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:00,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:00,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:00,942 INFO L87 Difference]: Start difference. First operand 3742 states and 6472 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:02:02,892 INFO L93 Difference]: Finished difference Result 6009 states and 10036 transitions. [2021-12-16 02:02:02,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 02:02:02,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-16 02:02:02,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:02:02,899 INFO L225 Difference]: With dead ends: 6009 [2021-12-16 02:02:02,899 INFO L226 Difference]: Without dead ends: 4409 [2021-12-16 02:02:02,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-16 02:02:02,903 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5149 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21429 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-16 02:02:02,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 21429 Invalid, 1465 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-16 02:02:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2021-12-16 02:02:03,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3742. [2021-12-16 02:02:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7325034578146612) internal successors, (6263), 3623 states have internal predecessors, (6263), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-16 02:02:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6468 transitions. [2021-12-16 02:02:03,077 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6468 transitions. Word has length 190 [2021-12-16 02:02:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:02:03,077 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6468 transitions. [2021-12-16 02:02:03,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-16 02:02:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6468 transitions. [2021-12-16 02:02:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-16 02:02:03,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:02:03,079 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:02:03,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 02:02:03,079 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:02:03,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:02:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 379998976, now seen corresponding path program 1 times [2021-12-16 02:02:03,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:02:03,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792316607] [2021-12-16 02:02:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:02:03,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:02:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 02:02:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 02:02:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-16 02:02:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-16 02:02:03,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-16 02:02:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:02:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:02:03,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:02:03,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792316607] [2021-12-16 02:02:03,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792316607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:02:03,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:02:03,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:02:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656320647] [2021-12-16 02:02:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:02:03,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:02:03,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:02:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:02:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:02:03,210 INFO L87 Difference]: Start difference. First operand 3742 states and 6468 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)