./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.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 b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:38:11,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:38:11,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:38:11,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:38:11,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:38:11,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:38:11,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:38:11,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:38:11,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:38:11,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:38:11,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:38:11,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:38:11,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:38:11,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:38:11,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:38:11,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:38:11,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:38:11,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:38:11,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:38:11,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:38:11,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:38:11,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:38:11,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:38:11,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:38:11,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:38:11,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:38:11,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:38:11,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:38:11,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:38:11,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:38:11,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:38:11,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:38:11,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:38:11,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:38:11,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:38:11,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:38:11,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:38:11,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:38:11,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:38:11,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:38:11,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:38:11,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:38:11,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:38:11,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:38:11,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:38:11,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:38:11,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:38:11,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:38:11,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:38:11,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:38:11,312 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:38:11,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:38:11,312 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:38:11,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:38:11,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:38:11,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:38:11,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:38:11,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:38:11,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:38:11,314 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:38:11,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:38:11,314 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:38:11,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:38:11,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:38:11,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:38:11,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:38:11,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:11,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:38:11,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:38:11,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:38:11,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:38:11,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:38:11,317 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:38:11,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:38:11,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:38:11,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:38:11,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5a8b3103e2d9faed499388786efbacaa303edd9c4d157d09b07735fe300c357 [2021-12-14 15:38:11,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:38:11,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:38:11,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:38:11,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:38:11,567 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:38:11,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2021-12-14 15:38:11,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d130879a/31476357cac845cf93afca56841f5dce/FLAGd12700908 [2021-12-14 15:38:12,425 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:38:12,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c [2021-12-14 15:38:12,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d130879a/31476357cac845cf93afca56841f5dce/FLAGd12700908 [2021-12-14 15:38:12,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d130879a/31476357cac845cf93afca56841f5dce [2021-12-14 15:38:12,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:38:12,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:38:12,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:12,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:38:12,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:38:12,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:12" (1/1) ... [2021-12-14 15:38:12,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcef181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:12, skipping insertion in model container [2021-12-14 15:38:12,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:38:12" (1/1) ... [2021-12-14 15:38:12,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:38:13,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:38:14,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[376251,376264] [2021-12-14 15:38:14,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[383339,383352] [2021-12-14 15:38:14,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:14,777 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:38:15,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[376251,376264] [2021-12-14 15:38:15,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label41+token_ring.08.cil-1.c[383339,383352] [2021-12-14 15:38:15,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:38:15,630 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:38:15,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15 WrapperNode [2021-12-14 15:38:15,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:38:15,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:15,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:38:15,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:38:15,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:15,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,143 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-12-14 15:38:16,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:38:16,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:38:16,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:38:16,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:38:16,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:38:16,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:38:16,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:38:16,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:38:16,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (1/1) ... [2021-12-14 15:38:16,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:38:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:38:16,649 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) [2021-12-14 15:38:16,676 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 [2021-12-14 15:38:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:38:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:38:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:38:16,690 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:38:16,690 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:38:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:38:16,691 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:38:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:38:16,691 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:38:16,691 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:38:16,691 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:38:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:38:16,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:38:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:38:16,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:38:16,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:38:16,809 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:38:16,811 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:38:22,638 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:38:22,671 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:38:22,671 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-14 15:38:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:22 BoogieIcfgContainer [2021-12-14 15:38:22,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:38:22,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:38:22,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:38:22,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:38:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:38:12" (1/3) ... [2021-12-14 15:38:22,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2692dbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:22, skipping insertion in model container [2021-12-14 15:38:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:38:15" (2/3) ... [2021-12-14 15:38:22,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2692dbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:38:22, skipping insertion in model container [2021-12-14 15:38:22,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:38:22" (3/3) ... [2021-12-14 15:38:22,686 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.08.cil-1.c [2021-12-14 15:38:22,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:38:22,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:38:22,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:38:22,754 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 [2021-12-14 15:38:22,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:38:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-14 15:38:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:22,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:22,829 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] [2021-12-14 15:38:22,830 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-12-14 15:38:22,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:22,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220501529] [2021-12-14 15:38:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:22,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:23,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220501529] [2021-12-14 15:38:23,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220501529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:23,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:23,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:38:23,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685358982] [2021-12-14 15:38:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:23,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:38:23,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:23,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:38:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:38:23,316 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:24,534 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-12-14 15:38:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:38:24,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:24,569 INFO L225 Difference]: With dead ends: 5022 [2021-12-14 15:38:24,569 INFO L226 Difference]: Without dead ends: 2496 [2021-12-14 15:38:24,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:38:24,586 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:24,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-12-14 15:38:24,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-12-14 15:38:24,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-14 15:38:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-12-14 15:38:24,731 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-12-14 15:38:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:24,731 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-12-14 15:38:24,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-12-14 15:38:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:24,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:24,737 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] [2021-12-14 15:38:24,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:38:24,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:24,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:24,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-12-14 15:38:24,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:24,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225228085] [2021-12-14 15:38:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:24,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:24,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:24,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225228085] [2021-12-14 15:38:24,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225228085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:24,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:24,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:38:24,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025076234] [2021-12-14 15:38:24,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:24,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:38:24,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:38:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:38:24,953 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:26,838 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-12-14 15:38:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:38:26,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:26,851 INFO L225 Difference]: With dead ends: 3126 [2021-12-14 15:38:26,852 INFO L226 Difference]: Without dead ends: 2865 [2021-12-14 15:38:26,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:26,855 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:26,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:38:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-12-14 15:38:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-12-14 15:38:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-14 15:38:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-12-14 15:38:26,939 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-12-14 15:38:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:26,940 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-12-14 15:38:26,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-12-14 15:38:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:26,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:26,943 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] [2021-12-14 15:38:26,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:38:26,944 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:26,944 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-12-14 15:38:26,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:26,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476859207] [2021-12-14 15:38:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:26,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:27,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:27,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476859207] [2021-12-14 15:38:27,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476859207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:27,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:27,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:27,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773846855] [2021-12-14 15:38:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:27,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:27,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:27,093 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:28,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:28,400 INFO L93 Difference]: Finished difference Result 3412 states and 6012 transitions. [2021-12-14 15:38:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:28,414 INFO L225 Difference]: With dead ends: 3412 [2021-12-14 15:38:28,414 INFO L226 Difference]: Without dead ends: 2879 [2021-12-14 15:38:28,417 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 [2021-12-14 15:38:28,419 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4746 mSDsluCounter, 16509 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20926 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:28,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20926 Invalid, 1150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 15:38:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-14 15:38:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2670. [2021-12-14 15:38:28,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8096330275229358) internal successors, (4734), 2619 states have internal predecessors, (4734), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-14 15:38:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4815 transitions. [2021-12-14 15:38:28,519 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4815 transitions. Word has length 134 [2021-12-14 15:38:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:28,520 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4815 transitions. [2021-12-14 15:38:28,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4815 transitions. [2021-12-14 15:38:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:28,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:28,522 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] [2021-12-14 15:38:28,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:38:28,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-12-14 15:38:28,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:28,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147533884] [2021-12-14 15:38:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:28,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:28,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:28,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147533884] [2021-12-14 15:38:28,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147533884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:28,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:28,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:28,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960432764] [2021-12-14 15:38:28,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:28,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:28,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:28,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:28,657 INFO L87 Difference]: Start difference. First operand 2670 states and 4815 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:30,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:30,946 INFO L93 Difference]: Finished difference Result 3775 states and 6579 transitions. [2021-12-14 15:38:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:30,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:30,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:30,961 INFO L225 Difference]: With dead ends: 3775 [2021-12-14 15:38:30,961 INFO L226 Difference]: Without dead ends: 3242 [2021-12-14 15:38:30,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:30,966 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 5127 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 21330 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:30,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5142 Valid, 21330 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:38:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2021-12-14 15:38:31,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2923. [2021-12-14 15:38:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.78804920913884) internal successors, (5087), 2849 states have internal predecessors, (5087), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-14 15:38:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5204 transitions. [2021-12-14 15:38:31,095 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5204 transitions. Word has length 134 [2021-12-14 15:38:31,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:31,097 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5204 transitions. [2021-12-14 15:38:31,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5204 transitions. [2021-12-14 15:38:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:31,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:31,106 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] [2021-12-14 15:38:31,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:38:31,106 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:31,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-12-14 15:38:31,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:31,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353730452] [2021-12-14 15:38:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:31,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:31,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:31,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353730452] [2021-12-14 15:38:31,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353730452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:31,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:31,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:31,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032956930] [2021-12-14 15:38:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:31,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:31,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:31,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:31,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:31,253 INFO L87 Difference]: Start difference. First operand 2923 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:33,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:33,572 INFO L93 Difference]: Finished difference Result 4734 states and 8088 transitions. [2021-12-14 15:38:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:33,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:33,599 INFO L225 Difference]: With dead ends: 4734 [2021-12-14 15:38:33,599 INFO L226 Difference]: Without dead ends: 3948 [2021-12-14 15:38:33,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:33,605 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 5060 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 21906 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:33,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 21906 Invalid, 2221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:38:33,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-12-14 15:38:33,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3431. [2021-12-14 15:38:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7537065052950076) internal successors, (5796), 3311 states have internal predecessors, (5796), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:38:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5989 transitions. [2021-12-14 15:38:33,752 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5989 transitions. Word has length 134 [2021-12-14 15:38:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:33,752 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5989 transitions. [2021-12-14 15:38:33,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5989 transitions. [2021-12-14 15:38:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:33,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:33,755 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] [2021-12-14 15:38:33,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:38:33,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:33,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-12-14 15:38:33,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:33,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381804420] [2021-12-14 15:38:33,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:33,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:34,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381804420] [2021-12-14 15:38:34,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381804420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:34,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:34,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:34,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358891291] [2021-12-14 15:38:34,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:34,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:34,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:34,011 INFO L87 Difference]: Start difference. First operand 3431 states and 5989 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:35,021 INFO L93 Difference]: Finished difference Result 5228 states and 8858 transitions. [2021-12-14 15:38:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:35,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:35,038 INFO L225 Difference]: With dead ends: 5228 [2021-12-14 15:38:35,038 INFO L226 Difference]: Without dead ends: 3934 [2021-12-14 15:38:35,044 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 [2021-12-14 15:38:35,045 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 4865 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 16810 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:35,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 16810 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:35,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-12-14 15:38:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3431. [2021-12-14 15:38:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7521936459909229) internal successors, (5791), 3311 states have internal predecessors, (5791), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:38:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5984 transitions. [2021-12-14 15:38:35,163 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5984 transitions. Word has length 134 [2021-12-14 15:38:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:35,164 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5984 transitions. [2021-12-14 15:38:35,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5984 transitions. [2021-12-14 15:38:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:35,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:35,166 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] [2021-12-14 15:38:35,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:38:35,167 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:35,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-12-14 15:38:35,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070421535] [2021-12-14 15:38:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:35,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:35,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:35,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070421535] [2021-12-14 15:38:35,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070421535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:35,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:35,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:35,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934586816] [2021-12-14 15:38:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:35,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:35,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:35,297 INFO L87 Difference]: Start difference. First operand 3431 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:36,358 INFO L93 Difference]: Finished difference Result 5222 states and 8831 transitions. [2021-12-14 15:38:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:36,385 INFO L225 Difference]: With dead ends: 5222 [2021-12-14 15:38:36,386 INFO L226 Difference]: Without dead ends: 3928 [2021-12-14 15:38:36,393 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 [2021-12-14 15:38:36,396 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4863 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 16806 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:36,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4879 Valid, 16806 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:36,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-12-14 15:38:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3431. [2021-12-14 15:38:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7506807866868381) internal successors, (5786), 3311 states have internal predecessors, (5786), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:38:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5979 transitions. [2021-12-14 15:38:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5979 transitions. Word has length 134 [2021-12-14 15:38:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:36,516 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5979 transitions. [2021-12-14 15:38:36,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5979 transitions. [2021-12-14 15:38:36,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:36,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:36,519 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] [2021-12-14 15:38:36,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:38:36,519 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:36,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-12-14 15:38:36,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:36,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346997428] [2021-12-14 15:38:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:36,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:36,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:36,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346997428] [2021-12-14 15:38:36,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346997428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:36,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:36,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:36,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702093031] [2021-12-14 15:38:36,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:36,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:36,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:36,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:36,644 INFO L87 Difference]: Start difference. First operand 3431 states and 5979 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:37,718 INFO L93 Difference]: Finished difference Result 5216 states and 8804 transitions. [2021-12-14 15:38:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:38:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:37,732 INFO L225 Difference]: With dead ends: 5216 [2021-12-14 15:38:37,732 INFO L226 Difference]: Without dead ends: 3922 [2021-12-14 15:38:37,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:38:37,738 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4743 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 20902 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:37,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 20902 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 15:38:37,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-12-14 15:38:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3431. [2021-12-14 15:38:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7491679273827534) internal successors, (5781), 3311 states have internal predecessors, (5781), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-14 15:38:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5974 transitions. [2021-12-14 15:38:37,850 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5974 transitions. Word has length 134 [2021-12-14 15:38:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:37,850 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5974 transitions. [2021-12-14 15:38:37,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5974 transitions. [2021-12-14 15:38:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:37,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:37,852 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] [2021-12-14 15:38:37,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:38:37,853 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:37,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-12-14 15:38:37,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:37,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637678094] [2021-12-14 15:38:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:37,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:37,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:37,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637678094] [2021-12-14 15:38:37,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637678094] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:37,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:37,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:37,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272463760] [2021-12-14 15:38:37,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:37,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:37,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:37,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:37,978 INFO L87 Difference]: Start difference. First operand 3431 states and 5974 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:40,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:40,152 INFO L93 Difference]: Finished difference Result 6562 states and 10871 transitions. [2021-12-14 15:38:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:38:40,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:40,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:40,168 INFO L225 Difference]: With dead ends: 6562 [2021-12-14 15:38:40,168 INFO L226 Difference]: Without dead ends: 5268 [2021-12-14 15:38:40,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:38:40,176 INFO L933 BasicCegarLoop]: 4635 mSDtfsCounter, 5029 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21878 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:40,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5044 Valid, 21878 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-12-14 15:38:40,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4469. [2021-12-14 15:38:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4247 states have (on average 1.6993171650576877) internal successors, (7217), 4257 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-14 15:38:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7568 transitions. [2021-12-14 15:38:40,348 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7568 transitions. Word has length 134 [2021-12-14 15:38:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:40,348 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 7568 transitions. [2021-12-14 15:38:40,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7568 transitions. [2021-12-14 15:38:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:40,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:40,352 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] [2021-12-14 15:38:40,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:38:40,352 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:40,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:40,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-12-14 15:38:40,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:40,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281358817] [2021-12-14 15:38:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:40,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:40,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281358817] [2021-12-14 15:38:40,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281358817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:40,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:40,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:40,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44187474] [2021-12-14 15:38:40,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:40,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:40,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:40,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:40,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:40,475 INFO L87 Difference]: Start difference. First operand 4469 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:42,948 INFO L93 Difference]: Finished difference Result 11236 states and 18097 transitions. [2021-12-14 15:38:42,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:42,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:42,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:42,982 INFO L225 Difference]: With dead ends: 11236 [2021-12-14 15:38:42,982 INFO L226 Difference]: Without dead ends: 8904 [2021-12-14 15:38:42,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:42,993 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5358 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5382 SdHoareTripleChecker+Valid, 21863 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:42,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5382 Valid, 21863 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-14 15:38:43,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2021-12-14 15:38:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 6520. [2021-12-14 15:38:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 6114 states have (on average 1.6465489041543997) internal successors, (10067), 6132 states have internal predecessors, (10067), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2021-12-14 15:38:43,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 10736 transitions. [2021-12-14 15:38:43,285 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 10736 transitions. Word has length 134 [2021-12-14 15:38:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:43,285 INFO L470 AbstractCegarLoop]: Abstraction has 6520 states and 10736 transitions. [2021-12-14 15:38:43,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:43,286 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 10736 transitions. [2021-12-14 15:38:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:43,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:43,290 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] [2021-12-14 15:38:43,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:38:43,290 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-12-14 15:38:43,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:43,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158549583] [2021-12-14 15:38:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:43,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:43,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:43,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158549583] [2021-12-14 15:38:43,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158549583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:43,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:43,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:43,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595377717] [2021-12-14 15:38:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:43,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:43,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:43,409 INFO L87 Difference]: Start difference. First operand 6520 states and 10736 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:46,471 INFO L93 Difference]: Finished difference Result 19345 states and 30719 transitions. [2021-12-14 15:38:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:46,521 INFO L225 Difference]: With dead ends: 19345 [2021-12-14 15:38:46,521 INFO L226 Difference]: Without dead ends: 14962 [2021-12-14 15:38:46,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:46,541 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 5162 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 21405 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:46,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 21405 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 15:38:46,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2021-12-14 15:38:47,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 10533. [2021-12-14 15:38:47,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 9767 states have (on average 1.6018224633971536) internal successors, (15645), 9801 states have internal predecessors, (15645), 534 states have call successors, (534), 198 states have call predecessors, (534), 230 states have return successors, (809), 565 states have call predecessors, (809), 534 states have call successors, (809) [2021-12-14 15:38:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 16988 transitions. [2021-12-14 15:38:47,240 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 16988 transitions. Word has length 134 [2021-12-14 15:38:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:47,241 INFO L470 AbstractCegarLoop]: Abstraction has 10533 states and 16988 transitions. [2021-12-14 15:38:47,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:47,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 16988 transitions. [2021-12-14 15:38:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:47,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:47,247 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] [2021-12-14 15:38:47,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:38:47,248 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-12-14 15:38:47,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643440784] [2021-12-14 15:38:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:47,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:47,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:47,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643440784] [2021-12-14 15:38:47,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643440784] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:47,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:47,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:47,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801989086] [2021-12-14 15:38:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:47,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:47,346 INFO L87 Difference]: Start difference. First operand 10533 states and 16988 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:50,650 INFO L93 Difference]: Finished difference Result 35028 states and 55309 transitions. [2021-12-14 15:38:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:50,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:50,758 INFO L225 Difference]: With dead ends: 35028 [2021-12-14 15:38:50,758 INFO L226 Difference]: Without dead ends: 26632 [2021-12-14 15:38:50,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:50,795 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5281 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5305 SdHoareTripleChecker+Valid, 21851 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:50,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5305 Valid, 21851 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2021-12-14 15:38:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 18622. [2021-12-14 15:38:51,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18622 states, 17152 states have (on average 1.5708372201492538) internal successors, (26943), 17218 states have internal predecessors, (26943), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2021-12-14 15:38:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18622 states to 18622 states and 29764 transitions. [2021-12-14 15:38:51,822 INFO L78 Accepts]: Start accepts. Automaton has 18622 states and 29764 transitions. Word has length 134 [2021-12-14 15:38:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:51,823 INFO L470 AbstractCegarLoop]: Abstraction has 18622 states and 29764 transitions. [2021-12-14 15:38:51,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18622 states and 29764 transitions. [2021-12-14 15:38:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:51,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:51,834 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] [2021-12-14 15:38:51,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:38:51,834 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:51,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:51,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-12-14 15:38:51,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:51,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173674632] [2021-12-14 15:38:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:51,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:51,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173674632] [2021-12-14 15:38:51,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173674632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:51,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:51,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:51,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317216008] [2021-12-14 15:38:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:51,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:51,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:51,950 INFO L87 Difference]: Start difference. First operand 18622 states and 29764 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:38:56,561 INFO L93 Difference]: Finished difference Result 65049 states and 103135 transitions. [2021-12-14 15:38:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:38:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-12-14 15:38:56,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:38:56,728 INFO L225 Difference]: With dead ends: 65049 [2021-12-14 15:38:56,729 INFO L226 Difference]: Without dead ends: 48564 [2021-12-14 15:38:56,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:38:56,781 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 5067 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21918 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:38:56,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 21918 Invalid, 2363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-14 15:38:56,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2021-12-14 15:38:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 34832. [2021-12-14 15:38:58,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5537735259175889) internal successors, (49699), 32116 states have internal predecessors, (49699), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-12-14 15:38:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55898 transitions. [2021-12-14 15:38:58,837 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55898 transitions. Word has length 134 [2021-12-14 15:38:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:38:58,837 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55898 transitions. [2021-12-14 15:38:58,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:38:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55898 transitions. [2021-12-14 15:38:58,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-14 15:38:58,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:38:58,859 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] [2021-12-14 15:38:58,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:38:58,859 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:38:58,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:38:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-12-14 15:38:58,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:38:58,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897563538] [2021-12-14 15:38:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:38:58,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:38:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:38:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 15:38:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 15:38:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-14 15:38:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-14 15:38:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:38:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:38:58,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:38:58,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897563538] [2021-12-14 15:38:58,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897563538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:38:58,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:38:58,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:38:58,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961156182] [2021-12-14 15:38:58,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:38:58,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:38:58,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:38:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:38:58,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:38:58,973 INFO L87 Difference]: Start difference. First operand 34832 states and 55898 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)