./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.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_label46+token_ring.15.cil.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 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:47:01,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:47:01,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:47:01,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:47:01,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:47:01,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:47:01,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:47:01,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:47:01,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:47:01,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:47:01,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:47:01,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:47:01,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:47:01,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:47:01,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:47:01,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:47:01,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:47:01,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:47:01,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:47:01,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:47:01,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:47:01,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:47:01,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:47:01,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:47:01,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:47:01,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:47:01,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:47:01,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:47:01,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:47:01,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:47:01,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:47:01,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:47:01,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:47:01,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:47:01,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:47:01,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:47:01,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:47:01,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:47:01,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:47:01,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:47:01,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:47:01,607 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:47:01,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:47:01,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:47:01,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:47:01,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:47:01,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:47:01,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:47:01,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:47:01,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:47:01,642 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:47:01,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:47:01,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:47:01,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:47:01,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:47:01,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:47:01,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:47:01,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:47:01,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:47:01,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:47:01,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:47:01,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:47:01,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:47:01,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:47:01,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:47:01,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:47:01,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:47:01,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:47:01,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:47:01,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:47:01,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:47:01,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a40438206222cb8b2973fadc665b92d328ce78e3a9921112a2f9717aab2538e [2021-12-14 15:47:01,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:47:01,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:47:01,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:47:01,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:47:01,931 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:47:01,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-14 15:47:02,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0af6a2f3/34be09d752494abdb80aaca75e3022ab/FLAG8f600cd4e [2021-12-14 15:47:02,861 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:47:02,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c [2021-12-14 15:47:02,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0af6a2f3/34be09d752494abdb80aaca75e3022ab/FLAG8f600cd4e [2021-12-14 15:47:03,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0af6a2f3/34be09d752494abdb80aaca75e3022ab [2021-12-14 15:47:03,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:47:03,319 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:47:03,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:47:03,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:47:03,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:47:03,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:03" (1/1) ... [2021-12-14 15:47:03,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fdfa01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:03, skipping insertion in model container [2021-12-14 15:47:03,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:47:03" (1/1) ... [2021-12-14 15:47:03,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:47:03,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:47:04,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2021-12-14 15:47:05,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2021-12-14 15:47:05,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:47:05,279 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:47:06,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[382357,382370] [2021-12-14 15:47:06,256 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.15.cil.c[383339,383352] [2021-12-14 15:47:06,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:47:06,346 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:47:06,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06 WrapperNode [2021-12-14 15:47:06,347 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:47:06,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:47:06,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:47:06,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:47:06,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:06,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:06,778 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2021-12-14 15:47:06,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:47:06,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:47:06,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:47:06,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:47:06,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:06,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:06,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:06,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:07,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:07,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:07,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:07,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:47:07,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:47:07,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:47:07,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:47:07,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (1/1) ... [2021-12-14 15:47:07,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:47:07,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:47:07,309 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 15:47:07,318 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 15:47:07,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:47:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:47:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:47:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:47:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:47:07,344 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:47:07,344 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:47:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-14 15:47:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-14 15:47:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:47:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:47:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:47:07,345 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:47:07,345 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:47:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:47:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:47:07,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:47:07,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:47:07,507 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:47:07,509 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:47:13,802 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:47:13,827 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:47:13,828 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-14 15:47:13,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:13 BoogieIcfgContainer [2021-12-14 15:47:13,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:47:13,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:47:13,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:47:13,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:47:13,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:47:03" (1/3) ... [2021-12-14 15:47:13,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8ecc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:13, skipping insertion in model container [2021-12-14 15:47:13,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:47:06" (2/3) ... [2021-12-14 15:47:13,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8ecc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:47:13, skipping insertion in model container [2021-12-14 15:47:13,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:47:13" (3/3) ... [2021-12-14 15:47:13,843 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.15.cil.c [2021-12-14 15:47:13,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:47:13,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:47:13,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:47:13,918 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 15:47:13,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:47:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-14 15:47:14,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:14,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:14,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:14,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:14,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash -842334402, now seen corresponding path program 1 times [2021-12-14 15:47:14,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:14,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883974504] [2021-12-14 15:47:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:14,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:14,607 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 15:47:14,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:14,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883974504] [2021-12-14 15:47:14,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883974504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:14,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:14,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:47:14,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528603299] [2021-12-14 15:47:14,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:14,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:47:14,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:47:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:47:14,645 INFO L87 Difference]: Start difference. First operand has 2596 states, 2557 states have (on average 1.8420023464998045) internal successors, (4710), 2562 states have internal predecessors, (4710), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:16,706 INFO L93 Difference]: Finished difference Result 5336 states and 9785 transitions. [2021-12-14 15:47:16,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:47:16,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:16,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:16,732 INFO L225 Difference]: With dead ends: 5336 [2021-12-14 15:47:16,732 INFO L226 Difference]: Without dead ends: 2681 [2021-12-14 15:47:16,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:47:16,743 INFO L933 BasicCegarLoop]: 4737 mSDtfsCounter, 1117 mSDsluCounter, 12522 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 17259 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:16,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 17259 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:47:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-14 15:47:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-14 15:47:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8245684464070655) internal successors, (4545), 2494 states have internal predecessors, (4545), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:47:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4601 transitions. [2021-12-14 15:47:16,879 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4601 transitions. Word has length 190 [2021-12-14 15:47:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:16,880 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4601 transitions. [2021-12-14 15:47:16,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4601 transitions. [2021-12-14 15:47:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:16,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:16,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:16,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:47:16,886 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:16,887 INFO L85 PathProgramCache]: Analyzing trace with hash -26287172, now seen corresponding path program 1 times [2021-12-14 15:47:16,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:16,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144519789] [2021-12-14 15:47:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:16,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:16,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:17,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:17,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:17,062 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 15:47:17,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:17,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144519789] [2021-12-14 15:47:17,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144519789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:17,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:17,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:47:17,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045359036] [2021-12-14 15:47:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:17,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:47:17,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:47:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:47:17,081 INFO L87 Difference]: Start difference. First operand 2528 states and 4601 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:18,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:18,685 INFO L93 Difference]: Finished difference Result 3071 states and 5479 transitions. [2021-12-14 15:47:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:47:18,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:18,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:18,701 INFO L225 Difference]: With dead ends: 3071 [2021-12-14 15:47:18,702 INFO L226 Difference]: Without dead ends: 2681 [2021-12-14 15:47:18,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:47:18,710 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 1103 mSDsluCounter, 12319 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 16986 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:18,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 16986 Invalid, 820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:47:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-14 15:47:18,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2528. [2021-12-14 15:47:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 2491 states have (on average 1.8241670012043356) internal successors, (4544), 2494 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-14 15:47:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 4600 transitions. [2021-12-14 15:47:18,799 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 4600 transitions. Word has length 190 [2021-12-14 15:47:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 4600 transitions. [2021-12-14 15:47:18,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 4600 transitions. [2021-12-14 15:47:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:18,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:18,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:18,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:47:18,808 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -674879942, now seen corresponding path program 1 times [2021-12-14 15:47:18,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:18,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008018226] [2021-12-14 15:47:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:18,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:18,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:19,015 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 15:47:19,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:19,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008018226] [2021-12-14 15:47:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008018226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:19,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:47:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653787473] [2021-12-14 15:47:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:47:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:47:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:47:19,018 INFO L87 Difference]: Start difference. First operand 2528 states and 4600 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:22,299 INFO L93 Difference]: Finished difference Result 3626 states and 6383 transitions. [2021-12-14 15:47:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:47:22,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:22,313 INFO L225 Difference]: With dead ends: 3626 [2021-12-14 15:47:22,314 INFO L226 Difference]: Without dead ends: 3240 [2021-12-14 15:47:22,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:47:22,317 INFO L933 BasicCegarLoop]: 4723 mSDtfsCounter, 5636 mSDsluCounter, 12966 mSDsCounter, 0 mSdLazyCounter, 2099 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 17689 SdHoareTripleChecker+Invalid, 2227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:22,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 17689 Invalid, 2227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 2099 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 15:47:22,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3240 states. [2021-12-14 15:47:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3240 to 2933. [2021-12-14 15:47:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.795256365538891) internal successors, (5147), 2871 states have internal predecessors, (5147), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:47:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5250 transitions. [2021-12-14 15:47:22,414 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5250 transitions. Word has length 190 [2021-12-14 15:47:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:22,415 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5250 transitions. [2021-12-14 15:47:22,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:22,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5250 transitions. [2021-12-14 15:47:22,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:22,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:22,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:22,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:47:22,418 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1773060918, now seen corresponding path program 1 times [2021-12-14 15:47:22,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:22,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384348545] [2021-12-14 15:47:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:22,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:22,611 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 15:47:22,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:22,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384348545] [2021-12-14 15:47:22,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384348545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:22,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:22,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:22,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911204822] [2021-12-14 15:47:22,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:22,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:22,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:22,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:22,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:22,614 INFO L87 Difference]: Start difference. First operand 2933 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:24,335 INFO L93 Difference]: Finished difference Result 4053 states and 7079 transitions. [2021-12-14 15:47:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:47:24,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:24,349 INFO L225 Difference]: With dead ends: 4053 [2021-12-14 15:47:24,349 INFO L226 Difference]: Without dead ends: 3262 [2021-12-14 15:47:24,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:47:24,355 INFO L933 BasicCegarLoop]: 4664 mSDtfsCounter, 5348 mSDsluCounter, 12677 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5369 SdHoareTripleChecker+Valid, 17341 SdHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:24,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5369 Valid, 17341 Invalid, 1558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:47:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-14 15:47:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2933. [2021-12-14 15:47:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2867 states have (on average 1.7945587722357865) internal successors, (5145), 2871 states have internal predecessors, (5145), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-14 15:47:24,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 5248 transitions. [2021-12-14 15:47:24,452 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 5248 transitions. Word has length 190 [2021-12-14 15:47:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:24,453 INFO L470 AbstractCegarLoop]: Abstraction has 2933 states and 5248 transitions. [2021-12-14 15:47:24,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:24,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 5248 transitions. [2021-12-14 15:47:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:24,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:24,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:24,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:47:24,456 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -150189512, now seen corresponding path program 1 times [2021-12-14 15:47:24,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:24,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029725929] [2021-12-14 15:47:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:24,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:24,631 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 15:47:24,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:24,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029725929] [2021-12-14 15:47:24,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029725929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:24,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:24,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:24,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745948345] [2021-12-14 15:47:24,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:24,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:24,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:24,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:24,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:24,634 INFO L87 Difference]: Start difference. First operand 2933 states and 5248 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:28,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:28,091 INFO L93 Difference]: Finished difference Result 4607 states and 7968 transitions. [2021-12-14 15:47:28,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:28,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:28,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:28,113 INFO L225 Difference]: With dead ends: 4607 [2021-12-14 15:47:28,114 INFO L226 Difference]: Without dead ends: 3816 [2021-12-14 15:47:28,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:28,124 INFO L933 BasicCegarLoop]: 5042 mSDtfsCounter, 5665 mSDsluCounter, 17946 mSDsCounter, 0 mSdLazyCounter, 3279 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5685 SdHoareTripleChecker+Valid, 22988 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 3279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:28,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5685 Valid, 22988 Invalid, 3368 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 3279 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 15:47:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2021-12-14 15:47:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3310. [2021-12-14 15:47:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3310 states, 3215 states have (on average 1.7701399688958008) internal successors, (5691), 3220 states have internal predecessors, (5691), 73 states have call successors, (73), 19 states have call predecessors, (73), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-14 15:47:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 5840 transitions. [2021-12-14 15:47:28,260 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 5840 transitions. Word has length 190 [2021-12-14 15:47:28,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:28,261 INFO L470 AbstractCegarLoop]: Abstraction has 3310 states and 5840 transitions. [2021-12-14 15:47:28,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 5840 transitions. [2021-12-14 15:47:28,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:28,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:28,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:28,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:47:28,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:28,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:28,265 INFO L85 PathProgramCache]: Analyzing trace with hash 348367290, now seen corresponding path program 1 times [2021-12-14 15:47:28,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:28,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470738074] [2021-12-14 15:47:28,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:28,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:28,455 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 15:47:28,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470738074] [2021-12-14 15:47:28,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470738074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:28,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:28,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:28,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350084228] [2021-12-14 15:47:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:28,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:28,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:28,458 INFO L87 Difference]: Start difference. First operand 3310 states and 5840 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:32,125 INFO L93 Difference]: Finished difference Result 6054 states and 10288 transitions. [2021-12-14 15:47:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:32,146 INFO L225 Difference]: With dead ends: 6054 [2021-12-14 15:47:32,147 INFO L226 Difference]: Without dead ends: 4886 [2021-12-14 15:47:32,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:32,154 INFO L933 BasicCegarLoop]: 5035 mSDtfsCounter, 5661 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5681 SdHoareTripleChecker+Valid, 22977 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:32,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5681 Valid, 22977 Invalid, 3353 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-14 15:47:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2021-12-14 15:47:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4067. [2021-12-14 15:47:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7342871742462953) internal successors, (6788), 3921 states have internal predecessors, (6788), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:47:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7033 transitions. [2021-12-14 15:47:32,369 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7033 transitions. Word has length 190 [2021-12-14 15:47:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:32,370 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7033 transitions. [2021-12-14 15:47:32,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7033 transitions. [2021-12-14 15:47:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:32,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:32,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:32,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:47:32,376 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 918639096, now seen corresponding path program 1 times [2021-12-14 15:47:32,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907696524] [2021-12-14 15:47:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:32,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:32,560 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 15:47:32,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:32,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907696524] [2021-12-14 15:47:32,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907696524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:32,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:32,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:32,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681088865] [2021-12-14 15:47:32,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:32,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:32,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:32,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:32,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:32,563 INFO L87 Difference]: Start difference. First operand 4067 states and 7033 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:34,149 INFO L93 Difference]: Finished difference Result 6799 states and 11470 transitions. [2021-12-14 15:47:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:47:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:34,170 INFO L225 Difference]: With dead ends: 6799 [2021-12-14 15:47:34,170 INFO L226 Difference]: Without dead ends: 4874 [2021-12-14 15:47:34,179 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 15:47:34,180 INFO L933 BasicCegarLoop]: 4651 mSDtfsCounter, 5345 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5366 SdHoareTripleChecker+Valid, 17327 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:34,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5366 Valid, 17327 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:47:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-12-14 15:47:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4067. [2021-12-14 15:47:34,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.733009708737864) internal successors, (6783), 3921 states have internal predecessors, (6783), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:47:34,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7028 transitions. [2021-12-14 15:47:34,357 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7028 transitions. Word has length 190 [2021-12-14 15:47:34,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:34,358 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7028 transitions. [2021-12-14 15:47:34,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:34,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7028 transitions. [2021-12-14 15:47:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:34,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:34,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:34,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:47:34,361 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:34,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1972459014, now seen corresponding path program 1 times [2021-12-14 15:47:34,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:34,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594310381] [2021-12-14 15:47:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:34,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:34,559 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 15:47:34,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:34,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594310381] [2021-12-14 15:47:34,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594310381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:34,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:34,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:34,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876302861] [2021-12-14 15:47:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:34,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:34,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:34,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:34,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:34,562 INFO L87 Difference]: Start difference. First operand 4067 states and 7028 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:36,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:36,124 INFO L93 Difference]: Finished difference Result 6793 states and 11443 transitions. [2021-12-14 15:47:36,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:47:36,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:36,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:36,141 INFO L225 Difference]: With dead ends: 6793 [2021-12-14 15:47:36,142 INFO L226 Difference]: Without dead ends: 4868 [2021-12-14 15:47:36,149 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 15:47:36,150 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 5429 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5450 SdHoareTripleChecker+Valid, 17278 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:36,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5450 Valid, 17278 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:47:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4868 states. [2021-12-14 15:47:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4868 to 4067. [2021-12-14 15:47:36,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7317322432294329) internal successors, (6778), 3921 states have internal predecessors, (6778), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:47:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7023 transitions. [2021-12-14 15:47:36,325 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7023 transitions. Word has length 190 [2021-12-14 15:47:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:36,325 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7023 transitions. [2021-12-14 15:47:36,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7023 transitions. [2021-12-14 15:47:36,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:36,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:36,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:36,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:47:36,330 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:36,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:36,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1536510392, now seen corresponding path program 1 times [2021-12-14 15:47:36,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:36,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263260631] [2021-12-14 15:47:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:36,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:36,490 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 15:47:36,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:36,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263260631] [2021-12-14 15:47:36,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263260631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:36,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:36,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:36,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941436713] [2021-12-14 15:47:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:36,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:36,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:36,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:36,495 INFO L87 Difference]: Start difference. First operand 4067 states and 7023 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:38,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:38,006 INFO L93 Difference]: Finished difference Result 6787 states and 11416 transitions. [2021-12-14 15:47:38,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:47:38,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:38,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:38,019 INFO L225 Difference]: With dead ends: 6787 [2021-12-14 15:47:38,019 INFO L226 Difference]: Without dead ends: 4862 [2021-12-14 15:47:38,026 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 15:47:38,026 INFO L933 BasicCegarLoop]: 4643 mSDtfsCounter, 5341 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5362 SdHoareTripleChecker+Valid, 17319 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:38,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5362 Valid, 17319 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:47:38,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2021-12-14 15:47:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4067. [2021-12-14 15:47:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4067 states, 3914 states have (on average 1.7304547777210015) internal successors, (6773), 3921 states have internal predecessors, (6773), 117 states have call successors, (117), 31 states have call predecessors, (117), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-14 15:47:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4067 states to 4067 states and 7018 transitions. [2021-12-14 15:47:38,183 INFO L78 Accepts]: Start accepts. Automaton has 4067 states and 7018 transitions. Word has length 190 [2021-12-14 15:47:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:38,183 INFO L470 AbstractCegarLoop]: Abstraction has 4067 states and 7018 transitions. [2021-12-14 15:47:38,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 4067 states and 7018 transitions. [2021-12-14 15:47:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:38,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:38,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:38,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:47:38,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:38,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2091075014, now seen corresponding path program 1 times [2021-12-14 15:47:38,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:38,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512305333] [2021-12-14 15:47:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:38,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:38,353 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 15:47:38,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:38,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512305333] [2021-12-14 15:47:38,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512305333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:38,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:38,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:38,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207664673] [2021-12-14 15:47:38,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:38,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:38,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:38,356 INFO L87 Difference]: Start difference. First operand 4067 states and 7018 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:41,964 INFO L93 Difference]: Finished difference Result 8829 states and 14633 transitions. [2021-12-14 15:47:41,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:41,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:41,989 INFO L225 Difference]: With dead ends: 8829 [2021-12-14 15:47:41,989 INFO L226 Difference]: Without dead ends: 6904 [2021-12-14 15:47:41,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:41,999 INFO L933 BasicCegarLoop]: 5012 mSDtfsCounter, 5639 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3198 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5659 SdHoareTripleChecker+Valid, 22954 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 3198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:42,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5659 Valid, 22954 Invalid, 3288 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 3198 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:47:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2021-12-14 15:47:42,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 5599. [2021-12-14 15:47:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 5330 states have (on average 1.6842401500938087) internal successors, (8977), 5341 states have internal predecessors, (8977), 205 states have call successors, (205), 55 states have call predecessors, (205), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-14 15:47:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 9420 transitions. [2021-12-14 15:47:42,276 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 9420 transitions. Word has length 190 [2021-12-14 15:47:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:42,277 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 9420 transitions. [2021-12-14 15:47:42,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 9420 transitions. [2021-12-14 15:47:42,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:42,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:42,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:42,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:47:42,282 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:42,282 INFO L85 PathProgramCache]: Analyzing trace with hash 8663416, now seen corresponding path program 1 times [2021-12-14 15:47:42,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:42,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68897428] [2021-12-14 15:47:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:42,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:42,472 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 15:47:42,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68897428] [2021-12-14 15:47:42,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68897428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:42,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:42,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:42,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33018191] [2021-12-14 15:47:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:42,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:42,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:42,474 INFO L87 Difference]: Start difference. First operand 5599 states and 9420 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:46,002 INFO L93 Difference]: Finished difference Result 14419 states and 23493 transitions. [2021-12-14 15:47:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:46,037 INFO L225 Difference]: With dead ends: 14419 [2021-12-14 15:47:46,038 INFO L226 Difference]: Without dead ends: 10962 [2021-12-14 15:47:46,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:46,055 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 5641 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 22947 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:46,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 22947 Invalid, 3280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-14 15:47:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10962 states. [2021-12-14 15:47:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10962 to 8664. [2021-12-14 15:47:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8664 states, 8163 states have (on average 1.6394707828004411) internal successors, (13383), 8182 states have internal predecessors, (13383), 381 states have call successors, (381), 103 states have call predecessors, (381), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-14 15:47:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8664 states to 8664 states and 14240 transitions. [2021-12-14 15:47:46,730 INFO L78 Accepts]: Start accepts. Automaton has 8664 states and 14240 transitions. Word has length 190 [2021-12-14 15:47:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:46,730 INFO L470 AbstractCegarLoop]: Abstraction has 8664 states and 14240 transitions. [2021-12-14 15:47:46,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 8664 states and 14240 transitions. [2021-12-14 15:47:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:46,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:46,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:47:46,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:47:46,737 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash 353491578, now seen corresponding path program 1 times [2021-12-14 15:47:46,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:46,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922799956] [2021-12-14 15:47:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:46,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:46,889 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 15:47:46,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:46,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922799956] [2021-12-14 15:47:46,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922799956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:46,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:46,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:46,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111489055] [2021-12-14 15:47:46,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:46,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:46,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:46,892 INFO L87 Difference]: Start difference. First operand 8664 states and 14240 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:51,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:47:51,149 INFO L93 Difference]: Finished difference Result 25576 states and 41227 transitions. [2021-12-14 15:47:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:47:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-14 15:47:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:47:51,210 INFO L225 Difference]: With dead ends: 25576 [2021-12-14 15:47:51,210 INFO L226 Difference]: Without dead ends: 19054 [2021-12-14 15:47:51,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:47:51,240 INFO L933 BasicCegarLoop]: 4996 mSDtfsCounter, 5636 mSDsluCounter, 17942 mSDsCounter, 0 mSdLazyCounter, 3169 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5656 SdHoareTripleChecker+Valid, 22938 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:47:51,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5656 Valid, 22938 Invalid, 3262 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3169 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 15:47:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19054 states. [2021-12-14 15:47:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19054 to 14826. [2021-12-14 15:47:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14826 states, 13861 states have (on average 1.6052954332299256) internal successors, (22251), 13896 states have internal predecessors, (22251), 733 states have call successors, (733), 199 states have call predecessors, (733), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-14 15:47:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14826 states to 14826 states and 23990 transitions. [2021-12-14 15:47:52,208 INFO L78 Accepts]: Start accepts. Automaton has 14826 states and 23990 transitions. Word has length 190 [2021-12-14 15:47:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:47:52,208 INFO L470 AbstractCegarLoop]: Abstraction has 14826 states and 23990 transitions. [2021-12-14 15:47:52,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:47:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 14826 states and 23990 transitions. [2021-12-14 15:47:52,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-14 15:47:52,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:47:52,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:47:52,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:47:52,219 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:47:52,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:47:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1415980036, now seen corresponding path program 1 times [2021-12-14 15:47:52,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:47:52,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129969669] [2021-12-14 15:47:52,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:47:52,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:47:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:47:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-14 15:47:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 15:47:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 15:47:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-14 15:47:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:47:52,375 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 15:47:52,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:47:52,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129969669] [2021-12-14 15:47:52,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129969669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:47:52,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:47:52,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:47:52,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382141470] [2021-12-14 15:47:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:47:52,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:47:52,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:47:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:47:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:47:52,377 INFO L87 Difference]: Start difference. First operand 14826 states and 23990 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)