./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.07.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23a748a14ab5667159adb09776d3545981eaa20034460211a51a13329e4251e4 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:45:52,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:45:52,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:45:52,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:45:52,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:45:52,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:45:52,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:45:52,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:45:52,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:45:52,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:45:52,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:45:52,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:45:52,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:45:52,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:45:52,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:45:52,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:45:52,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:45:52,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:45:52,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:45:52,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:45:52,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:45:52,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:45:52,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:45:52,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:45:52,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:45:52,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:45:52,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:45:52,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:45:52,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:45:52,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:45:52,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:45:52,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:45:52,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:45:52,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:45:52,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:45:52,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:45:52,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:45:52,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:45:52,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:45:52,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:45:52,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:45:52,542 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:45:52,556 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:45:52,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:45:52,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:45:52,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:45:52,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:45:52,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:45:52,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:45:52,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:45:52,559 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:45:52,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:45:52,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:45:52,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:45:52,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:45:52,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:45:52,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:45:52,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:45:52,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:45:52,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:45:52,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:45:52,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:45:52,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:45:52,561 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:45:52,562 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:45:52,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23a748a14ab5667159adb09776d3545981eaa20034460211a51a13329e4251e4 [2021-12-14 15:45:52,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:45:52,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:45:52,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:45:52,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:45:52,773 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:45:52,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.07.cil-1.c [2021-12-14 15:45:52,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74731c856/12ed834f5186470e98c154f98718df9f/FLAG3c32d76e3 [2021-12-14 15:45:53,602 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:45:53,603 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.07.cil-1.c [2021-12-14 15:45:53,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74731c856/12ed834f5186470e98c154f98718df9f/FLAG3c32d76e3 [2021-12-14 15:45:53,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74731c856/12ed834f5186470e98c154f98718df9f [2021-12-14 15:45:53,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:45:53,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:45:53,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:45:53,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:45:53,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:45:53,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:45:53" (1/1) ... [2021-12-14 15:45:53,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfae8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:53, skipping insertion in model container [2021-12-14 15:45:53,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:45:53" (1/1) ... [2021-12-14 15:45:53,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:45:53,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:45:55,194 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.07.cil-1.c[382357,382370] [2021-12-14 15:45:55,213 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.07.cil-1.c[383339,383352] [2021-12-14 15:45:55,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:45:55,398 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:45:56,089 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.07.cil-1.c[382357,382370] [2021-12-14 15:45:56,093 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.07.cil-1.c[383339,383352] [2021-12-14 15:45:56,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:45:56,162 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:45:56,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56 WrapperNode [2021-12-14 15:45:56,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:45:56,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:45:56,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:45:56,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:45:56,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,600 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-12-14 15:45:56,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:45:56,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:45:56,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:45:56,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:45:56,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:45:56,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:45:56,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:45:56,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:45:56,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (1/1) ... [2021-12-14 15:45:56,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:45:56,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:45:56,980 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 15:45:56,986 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 15:45:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:45:57,007 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-14 15:45:57,007 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-14 15:45:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 15:45:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 15:45:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-14 15:45:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-14 15:45:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-14 15:45:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-14 15:45:57,008 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-14 15:45:57,008 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-14 15:45:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-14 15:45:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-14 15:45:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:45:57,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:45:57,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:45:57,146 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:45:57,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:46:01,704 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:46:01,729 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:46:01,729 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-14 15:46:01,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:46:01 BoogieIcfgContainer [2021-12-14 15:46:01,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:46:01,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:46:01,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:46:01,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:46:01,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:45:53" (1/3) ... [2021-12-14 15:46:01,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c122a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:46:01, skipping insertion in model container [2021-12-14 15:46:01,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:45:56" (2/3) ... [2021-12-14 15:46:01,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c122a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:46:01, skipping insertion in model container [2021-12-14 15:46:01,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:46:01" (3/3) ... [2021-12-14 15:46:01,738 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.07.cil-1.c [2021-12-14 15:46:01,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:46:01,741 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 15:46:01,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:46:01,778 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 15:46:01,778 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 15:46:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-14 15:46:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:01,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:01,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:01,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:01,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-12-14 15:46:01,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:01,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490005251] [2021-12-14 15:46:01,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:01,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:02,221 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 15:46:02,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:02,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490005251] [2021-12-14 15:46:02,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490005251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:02,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:02,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:46:02,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544051791] [2021-12-14 15:46:02,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:02,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:46:02,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:46:02,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:46:02,260 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:03,190 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-12-14 15:46:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 15:46:03,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:03,209 INFO L225 Difference]: With dead ends: 4955 [2021-12-14 15:46:03,210 INFO L226 Difference]: Without dead ends: 2460 [2021-12-14 15:46:03,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:46:03,219 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:03,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:46:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-12-14 15:46:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-12-14 15:46:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-12-14 15:46:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-12-14 15:46:03,349 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-12-14 15:46:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:03,350 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-12-14 15:46:03,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-12-14 15:46:03,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:03,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:03,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:03,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:46:03,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-12-14 15:46:03,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:03,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620281991] [2021-12-14 15:46:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:03,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:03,496 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 15:46:03,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:03,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620281991] [2021-12-14 15:46:03,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620281991] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:03,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:03,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:46:03,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514049393] [2021-12-14 15:46:03,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:03,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:46:03,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:03,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:46:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:46:03,499 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:04,842 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-12-14 15:46:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 15:46:04,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:04,853 INFO L225 Difference]: With dead ends: 3029 [2021-12-14 15:46:04,853 INFO L226 Difference]: Without dead ends: 2792 [2021-12-14 15:46:04,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:46:04,856 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:04,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 15:46:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-12-14 15:46:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-12-14 15:46:04,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-14 15:46:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-12-14 15:46:04,908 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-12-14 15:46:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:04,908 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-12-14 15:46:04,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-12-14 15:46:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:04,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:04,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:04,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:46:04,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:04,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-12-14 15:46:04,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:04,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439389103] [2021-12-14 15:46:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:04,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:04,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:05,055 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 15:46:05,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:05,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439389103] [2021-12-14 15:46:05,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439389103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:05,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:05,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:05,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625487417] [2021-12-14 15:46:05,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:05,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:05,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:05,058 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:05,936 INFO L93 Difference]: Finished difference Result 3287 states and 5804 transitions. [2021-12-14 15:46:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:46:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:05,948 INFO L225 Difference]: With dead ends: 3287 [2021-12-14 15:46:05,949 INFO L226 Difference]: Without dead ends: 2804 [2021-12-14 15:46:05,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:46:05,957 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4771 mSDsluCounter, 12358 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16729 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:05,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16729 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:46:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-12-14 15:46:06,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2619. [2021-12-14 15:46:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8130112972341255) internal successors, (4654), 2570 states have internal predecessors, (4654), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-14 15:46:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2021-12-14 15:46:06,036 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2021-12-14 15:46:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:06,036 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2021-12-14 15:46:06,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2021-12-14 15:46:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:06,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:06,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:06,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:46:06,039 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-12-14 15:46:06,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:06,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727162438] [2021-12-14 15:46:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:06,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:06,183 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 15:46:06,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:06,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727162438] [2021-12-14 15:46:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727162438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:06,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:06,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:06,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885949819] [2021-12-14 15:46:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:06,185 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:07,881 INFO L93 Difference]: Finished difference Result 3613 states and 6309 transitions. [2021-12-14 15:46:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:46:07,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:07,893 INFO L225 Difference]: With dead ends: 3613 [2021-12-14 15:46:07,893 INFO L226 Difference]: Without dead ends: 3130 [2021-12-14 15:46:07,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:46:07,897 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4935 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:07,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 21717 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 15:46:07,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2021-12-14 15:46:07,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2848. [2021-12-14 15:46:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7922827262892174) internal successors, (4970), 2777 states have internal predecessors, (4970), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-12-14 15:46:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5081 transitions. [2021-12-14 15:46:07,973 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5081 transitions. Word has length 123 [2021-12-14 15:46:07,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:07,973 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5081 transitions. [2021-12-14 15:46:07,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:07,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5081 transitions. [2021-12-14 15:46:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:07,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:07,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:07,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:46:07,976 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-12-14 15:46:07,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:07,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547143775] [2021-12-14 15:46:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:07,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:08,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:08,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:08,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:08,064 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 15:46:08,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:08,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547143775] [2021-12-14 15:46:08,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547143775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:08,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:08,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:08,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402420407] [2021-12-14 15:46:08,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:08,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:08,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:08,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:08,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:08,067 INFO L87 Difference]: Start difference. First operand 2848 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:09,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:09,830 INFO L93 Difference]: Finished difference Result 4476 states and 7659 transitions. [2021-12-14 15:46:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:46:09,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:09,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:09,845 INFO L225 Difference]: With dead ends: 4476 [2021-12-14 15:46:09,845 INFO L226 Difference]: Without dead ends: 3764 [2021-12-14 15:46:09,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:46:09,849 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21705 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:09,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21705 Invalid, 1999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:46:09,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-12-14 15:46:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3308. [2021-12-14 15:46:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3187 states have (on average 1.7587072481957955) internal successors, (5605), 3193 states have internal predecessors, (5605), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-12-14 15:46:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 5788 transitions. [2021-12-14 15:46:09,928 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 5788 transitions. Word has length 123 [2021-12-14 15:46:09,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:09,928 INFO L470 AbstractCegarLoop]: Abstraction has 3308 states and 5788 transitions. [2021-12-14 15:46:09,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:09,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 5788 transitions. [2021-12-14 15:46:09,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:09,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:09,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:09,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:46:09,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:09,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:09,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-12-14 15:46:09,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:09,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594239726] [2021-12-14 15:46:09,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:09,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:10,008 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 15:46:10,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:10,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594239726] [2021-12-14 15:46:10,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594239726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:10,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:10,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:10,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933927653] [2021-12-14 15:46:10,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:10,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:10,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:10,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:10,011 INFO L87 Difference]: Start difference. First operand 3308 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:11,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:11,645 INFO L93 Difference]: Finished difference Result 6142 states and 10254 transitions. [2021-12-14 15:46:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:46:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:11,662 INFO L225 Difference]: With dead ends: 6142 [2021-12-14 15:46:11,663 INFO L226 Difference]: Without dead ends: 4970 [2021-12-14 15:46:11,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 15:46:11,668 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 4928 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4942 SdHoareTripleChecker+Valid, 21701 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:11,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4942 Valid, 21701 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:46:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-12-14 15:46:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4230. [2021-12-14 15:46:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.7119741100323624) internal successors, (6877), 4027 states have internal predecessors, (6877), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:46:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7210 transitions. [2021-12-14 15:46:11,775 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7210 transitions. Word has length 123 [2021-12-14 15:46:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:11,775 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7210 transitions. [2021-12-14 15:46:11,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:11,776 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7210 transitions. [2021-12-14 15:46:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:11,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:11,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:11,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:46:11,778 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:11,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-12-14 15:46:11,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:11,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243389160] [2021-12-14 15:46:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:11,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:11,903 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 15:46:11,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:11,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243389160] [2021-12-14 15:46:11,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243389160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:11,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:11,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:11,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759797009] [2021-12-14 15:46:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:11,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:11,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:11,913 INFO L87 Difference]: Start difference. First operand 4230 states and 7210 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:12,695 INFO L93 Difference]: Finished difference Result 7076 states and 11725 transitions. [2021-12-14 15:46:12,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:46:12,696 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:12,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:12,712 INFO L225 Difference]: With dead ends: 7076 [2021-12-14 15:46:12,712 INFO L226 Difference]: Without dead ends: 4982 [2021-12-14 15:46:12,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:46:12,719 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4774 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16711 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:12,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16711 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:46:12,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-12-14 15:46:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4230. [2021-12-14 15:46:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.709733632063729) internal successors, (6868), 4027 states have internal predecessors, (6868), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:46:12,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7201 transitions. [2021-12-14 15:46:12,829 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7201 transitions. Word has length 123 [2021-12-14 15:46:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:12,829 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7201 transitions. [2021-12-14 15:46:12,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:12,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7201 transitions. [2021-12-14 15:46:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:12,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:12,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:12,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:46:12,832 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-12-14 15:46:12,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:12,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028785167] [2021-12-14 15:46:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:12,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:12,912 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 15:46:12,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:12,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028785167] [2021-12-14 15:46:12,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028785167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:12,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:12,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:12,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317030409] [2021-12-14 15:46:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:12,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:12,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:12,914 INFO L87 Difference]: Start difference. First operand 4230 states and 7201 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:13,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:13,834 INFO L93 Difference]: Finished difference Result 7056 states and 11659 transitions. [2021-12-14 15:46:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:46:13,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:13,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:13,860 INFO L225 Difference]: With dead ends: 7056 [2021-12-14 15:46:13,860 INFO L226 Difference]: Without dead ends: 4962 [2021-12-14 15:46:13,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:46:13,866 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4664 mSDsluCounter, 16444 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20792 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:13,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20792 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:46:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-12-14 15:46:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4230. [2021-12-14 15:46:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.707493154095096) internal successors, (6859), 4027 states have internal predecessors, (6859), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-12-14 15:46:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7192 transitions. [2021-12-14 15:46:13,992 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7192 transitions. Word has length 123 [2021-12-14 15:46:13,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:13,992 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7192 transitions. [2021-12-14 15:46:13,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7192 transitions. [2021-12-14 15:46:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:13,995 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:13,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:13,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:46:13,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:13,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-12-14 15:46:13,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:13,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205046631] [2021-12-14 15:46:13,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:13,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:14,085 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 15:46:14,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205046631] [2021-12-14 15:46:14,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205046631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:14,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:14,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:14,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154057598] [2021-12-14 15:46:14,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:14,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:14,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:14,088 INFO L87 Difference]: Start difference. First operand 4230 states and 7192 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:15,876 INFO L93 Difference]: Finished difference Result 10300 states and 16616 transitions. [2021-12-14 15:46:15,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:46:15,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:15,898 INFO L225 Difference]: With dead ends: 10300 [2021-12-14 15:46:15,898 INFO L226 Difference]: Without dead ends: 8206 [2021-12-14 15:46:15,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:46:15,907 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 5202 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 21669 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:15,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5224 Valid, 21669 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:46:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2021-12-14 15:46:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 6082. [2021-12-14 15:46:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 5693 states have (on average 1.6539610047426665) internal successors, (9416), 5711 states have internal predecessors, (9416), 269 states have call successors, (269), 102 states have call predecessors, (269), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2021-12-14 15:46:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 10051 transitions. [2021-12-14 15:46:16,159 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 10051 transitions. Word has length 123 [2021-12-14 15:46:16,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:16,159 INFO L470 AbstractCegarLoop]: Abstraction has 6082 states and 10051 transitions. [2021-12-14 15:46:16,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:16,159 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 10051 transitions. [2021-12-14 15:46:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:16,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:16,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:16,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:46:16,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:16,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-12-14 15:46:16,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:16,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95795853] [2021-12-14 15:46:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:16,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:16,255 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 15:46:16,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:16,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95795853] [2021-12-14 15:46:16,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95795853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:16,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:16,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:16,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138596025] [2021-12-14 15:46:16,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:16,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:16,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:16,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:16,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:16,257 INFO L87 Difference]: Start difference. First operand 6082 states and 10051 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:18,416 INFO L93 Difference]: Finished difference Result 17558 states and 27899 transitions. [2021-12-14 15:46:18,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:46:18,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:18,453 INFO L225 Difference]: With dead ends: 17558 [2021-12-14 15:46:18,453 INFO L226 Difference]: Without dead ends: 13612 [2021-12-14 15:46:18,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:46:18,469 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4972 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 21768 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:18,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 21768 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 15:46:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13612 states. [2021-12-14 15:46:18,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13612 to 9691. [2021-12-14 15:46:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 8958 states have (on average 1.6070551462379996) internal successors, (14396), 8992 states have internal predecessors, (14396), 501 states have call successors, (501), 198 states have call predecessors, (501), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2021-12-14 15:46:18,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 15673 transitions. [2021-12-14 15:46:19,000 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 15673 transitions. Word has length 123 [2021-12-14 15:46:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:19,000 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 15673 transitions. [2021-12-14 15:46:19,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 15673 transitions. [2021-12-14 15:46:19,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:19,006 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:19,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:19,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:46:19,006 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:19,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:19,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-12-14 15:46:19,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:19,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385331746] [2021-12-14 15:46:19,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:19,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:19,094 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 15:46:19,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:19,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385331746] [2021-12-14 15:46:19,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385331746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:19,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:19,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:19,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306764636] [2021-12-14 15:46:19,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:19,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:19,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:19,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:19,097 INFO L87 Difference]: Start difference. First operand 9691 states and 15673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:21,604 INFO L93 Difference]: Finished difference Result 31533 states and 49799 transitions. [2021-12-14 15:46:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:46:21,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:21,677 INFO L225 Difference]: With dead ends: 31533 [2021-12-14 15:46:21,677 INFO L226 Difference]: Without dead ends: 23978 [2021-12-14 15:46:21,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:46:21,702 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 5122 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:21,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 21659 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:46:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23978 states. [2021-12-14 15:46:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23978 to 16972. [2021-12-14 15:46:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16972 states, 15567 states have (on average 1.5737136249759105) internal successors, (24498), 15633 states have internal predecessors, (24498), 949 states have call successors, (949), 390 states have call predecessors, (949), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2021-12-14 15:46:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 27189 transitions. [2021-12-14 15:46:22,520 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 27189 transitions. Word has length 123 [2021-12-14 15:46:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:22,520 INFO L470 AbstractCegarLoop]: Abstraction has 16972 states and 27189 transitions. [2021-12-14 15:46:22,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 27189 transitions. [2021-12-14 15:46:22,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:22,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:22,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:22,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:46:22,530 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:22,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:22,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-12-14 15:46:22,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:22,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863764089] [2021-12-14 15:46:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:22,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:22,611 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 15:46:22,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:22,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863764089] [2021-12-14 15:46:22,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863764089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:22,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:22,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:22,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069802115] [2021-12-14 15:46:22,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:22,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:22,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:22,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:22,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:22,613 INFO L87 Difference]: Start difference. First operand 16972 states and 27189 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:26,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:26,302 INFO L93 Difference]: Finished difference Result 59100 states and 93657 transitions. [2021-12-14 15:46:26,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:46:26,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:26,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:26,447 INFO L225 Difference]: With dead ends: 59100 [2021-12-14 15:46:26,447 INFO L226 Difference]: Without dead ends: 44264 [2021-12-14 15:46:26,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:46:26,491 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 5082 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:26,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5104 Valid, 21654 Invalid, 1912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 15:46:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44264 states. [2021-12-14 15:46:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44264 to 31501. [2021-12-14 15:46:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 28784 states have (on average 1.5540578098943858) internal successors, (44732), 28914 states have internal predecessors, (44732), 1813 states have call successors, (1813), 774 states have call predecessors, (1813), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2021-12-14 15:46:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 50673 transitions. [2021-12-14 15:46:28,061 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 50673 transitions. Word has length 123 [2021-12-14 15:46:28,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:28,062 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 50673 transitions. [2021-12-14 15:46:28,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 50673 transitions. [2021-12-14 15:46:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:28,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:28,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:28,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:46:28,078 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-12-14 15:46:28,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:28,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347690806] [2021-12-14 15:46:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:28,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:28,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:28,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:28,160 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 15:46:28,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:28,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347690806] [2021-12-14 15:46:28,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347690806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:28,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:28,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:28,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742209518] [2021-12-14 15:46:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:28,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:28,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:28,162 INFO L87 Difference]: Start difference. First operand 31501 states and 50673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:34,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:34,193 INFO L93 Difference]: Finished difference Result 113051 states and 181431 transitions. [2021-12-14 15:46:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:46:34,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:34,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:34,492 INFO L225 Difference]: With dead ends: 113051 [2021-12-14 15:46:34,493 INFO L226 Difference]: Without dead ends: 83686 [2021-12-14 15:46:34,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 15:46:34,578 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 4940 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:34,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 21709 Invalid, 2120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 15:46:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83686 states. [2021-12-14 15:46:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83686 to 60494. [2021-12-14 15:46:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5441259032544326) internal successors, (85262), 55475 states have internal predecessors, (85262), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-14 15:46:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 99033 transitions. [2021-12-14 15:46:37,906 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 99033 transitions. Word has length 123 [2021-12-14 15:46:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:37,907 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 99033 transitions. [2021-12-14 15:46:37,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 99033 transitions. [2021-12-14 15:46:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:37,939 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:37,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:37,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:46:37,940 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -67612818, now seen corresponding path program 1 times [2021-12-14 15:46:37,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:37,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041377679] [2021-12-14 15:46:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:37,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:38,016 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 15:46:38,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:38,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041377679] [2021-12-14 15:46:38,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041377679] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:38,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:38,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:38,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331370761] [2021-12-14 15:46:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:38,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:38,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:38,018 INFO L87 Difference]: Start difference. First operand 60494 states and 99033 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:46:42,675 INFO L93 Difference]: Finished difference Result 135108 states and 225560 transitions. [2021-12-14 15:46:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:46:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-12-14 15:46:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:46:42,887 INFO L225 Difference]: With dead ends: 135108 [2021-12-14 15:46:42,887 INFO L226 Difference]: Without dead ends: 76750 [2021-12-14 15:46:42,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:46:42,984 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 4774 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16682 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:46:42,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16682 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:46:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76750 states. [2021-12-14 15:46:46,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76750 to 60494. [2021-12-14 15:46:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5394715395620915) internal successors, (85005), 55475 states have internal predecessors, (85005), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-12-14 15:46:46,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 98776 transitions. [2021-12-14 15:46:46,571 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 98776 transitions. Word has length 123 [2021-12-14 15:46:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:46:46,571 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 98776 transitions. [2021-12-14 15:46:46,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 15:46:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 98776 transitions. [2021-12-14 15:46:46,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-14 15:46:46,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:46:46,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:46:46,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:46:46,596 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 15:46:46,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:46:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash -96113108, now seen corresponding path program 1 times [2021-12-14 15:46:46,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:46:46,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402732588] [2021-12-14 15:46:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:46:46,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:46:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 15:46:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 15:46:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-14 15:46:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 15:46:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 15:46:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:46:46,668 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 15:46:46,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:46:46,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402732588] [2021-12-14 15:46:46,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402732588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:46:46,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:46:46,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:46:46,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304351005] [2021-12-14 15:46:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:46:46,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 15:46:46,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:46:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 15:46:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:46:46,670 INFO L87 Difference]: Start difference. First operand 60494 states and 98776 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)