./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_label44+token_ring.04.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 a41685cf358ec0b2e96e6f7dd9c345adfadc94b6fab0c764984a2fa5efe36e67 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:35:50,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:35:50,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:35:50,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:35:50,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:35:50,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:35:50,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:35:50,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:35:50,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:35:50,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:35:50,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:35:50,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:35:50,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:35:50,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:35:50,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:35:50,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:35:50,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:35:50,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:35:50,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:35:50,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:35:50,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:35:50,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:35:50,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:35:50,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:35:50,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:35:50,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:35:50,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:35:50,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:35:50,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:35:50,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:35:50,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:35:50,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:35:50,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:35:50,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:35:50,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:35:50,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:35:50,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:35:50,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:35:50,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:35:50,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:35:50,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:35:50,487 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:35:50,513 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:35:50,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:35:50,514 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:35:50,514 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:35:50,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:35:50,515 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:35:50,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:35:50,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:35:50,515 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:35:50,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:35:50,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:35:50,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:35:50,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:35:50,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:35:50,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:35:50,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:35:50,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:35:50,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:35:50,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:35:50,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:35:50,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:35:50,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:35:50,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:35:50,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41685cf358ec0b2e96e6f7dd9c345adfadc94b6fab0c764984a2fa5efe36e67 [2021-12-22 12:35:50,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:35:50,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:35:50,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:35:50,714 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:35:50,715 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:35:50,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.04.cil-1.c [2021-12-22 12:35:50,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f146aa3ab/0203580b4265404cb8a3084106c44b3a/FLAG213032c59 [2021-12-22 12:35:51,526 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:35:51,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.04.cil-1.c [2021-12-22 12:35:51,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f146aa3ab/0203580b4265404cb8a3084106c44b3a/FLAG213032c59 [2021-12-22 12:35:51,797 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f146aa3ab/0203580b4265404cb8a3084106c44b3a [2021-12-22 12:35:51,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:35:51,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:35:51,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:35:51,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:35:51,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:35:51,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:51" (1/1) ... [2021-12-22 12:35:51,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c596d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:51, skipping insertion in model container [2021-12-22 12:35:51,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:51" (1/1) ... [2021-12-22 12:35:51,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:35:51,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:35:53,164 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_label44+token_ring.04.cil-1.c[377340,377353] [2021-12-22 12:35:53,183 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_label44+token_ring.04.cil-1.c[383339,383352] [2021-12-22 12:35:53,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:35:53,298 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:35:53,840 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_label44+token_ring.04.cil-1.c[377340,377353] [2021-12-22 12:35:53,847 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_label44+token_ring.04.cil-1.c[383339,383352] [2021-12-22 12:35:53,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:35:53,905 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:35:53,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53 WrapperNode [2021-12-22 12:35:53,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:35:53,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:35:53,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:35:53,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:35:53,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:53,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,204 INFO L137 Inliner]: procedures = 52, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12735 [2021-12-22 12:35:54,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:35:54,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:35:54,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:35:54,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:35:54,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:35:54,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:35:54,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:35:54,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:35:54,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (1/1) ... [2021-12-22 12:35:54,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:35:54,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:35:54,816 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) [2021-12-22 12:35:54,825 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 [2021-12-22 12:35:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:35:54,849 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:35:54,849 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:35:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:35:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:35:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:35:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:35:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:35:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:35:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:35:54,850 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:35:54,850 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:35:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:35:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:35:54,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:35:54,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:35:54,925 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:35:54,929 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:35:59,508 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:35:59,539 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:35:59,540 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-22 12:35:59,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:35:59 BoogieIcfgContainer [2021-12-22 12:35:59,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:35:59,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:35:59,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:35:59,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:35:59,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:35:51" (1/3) ... [2021-12-22 12:35:59,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed57e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:35:59, skipping insertion in model container [2021-12-22 12:35:59,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:53" (2/3) ... [2021-12-22 12:35:59,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed57e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:35:59, skipping insertion in model container [2021-12-22 12:35:59,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:35:59" (3/3) ... [2021-12-22 12:35:59,548 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.04.cil-1.c [2021-12-22 12:35:59,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:35:59,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:35:59,590 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:35:59,594 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 [2021-12-22 12:35:59,594 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:35:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-22 12:35:59,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:35:59,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:59,648 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] [2021-12-22 12:35:59,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2021-12-22 12:35:59,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:59,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375170924] [2021-12-22 12:35:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:59,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:35:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:35:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:35:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:35:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:35:59,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:59,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375170924] [2021-12-22 12:35:59,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375170924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:59,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:59,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:35:59,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461726067] [2021-12-22 12:35:59,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:59,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:35:59,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:35:59,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:35:59,962 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-22 12:36:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:00,600 INFO L93 Difference]: Finished difference Result 4778 states and 8824 transitions. [2021-12-22 12:36:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:36:00,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:00,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:00,618 INFO L225 Difference]: With dead ends: 4778 [2021-12-22 12:36:00,619 INFO L226 Difference]: Without dead ends: 2352 [2021-12-22 12:36:00,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:36:00,628 INFO L933 BasicCegarLoop]: 4315 mSDtfsCounter, 434 mSDsluCounter, 12269 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 16584 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:00,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 16584 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:36:00,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-12-22 12:36:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2298. [2021-12-22 12:36:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-12-22 12:36:00,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2021-12-22 12:36:00,708 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2021-12-22 12:36:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:00,709 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2021-12-22 12:36:00,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2021-12-22 12:36:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2021-12-22 12:36:00,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:00,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:00,715 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] [2021-12-22 12:36:00,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:36:00,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2021-12-22 12:36:00,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:00,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595764799] [2021-12-22 12:36:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:00,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:00,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:00,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595764799] [2021-12-22 12:36:00,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595764799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:00,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:00,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:36:00,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932974147] [2021-12-22 12:36:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:00,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:36:00,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:00,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:36:00,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:36:00,865 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:36:01,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:01,678 INFO L93 Difference]: Finished difference Result 2738 states and 4911 transitions. [2021-12-22 12:36:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:36:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:01,693 INFO L225 Difference]: With dead ends: 2738 [2021-12-22 12:36:01,694 INFO L226 Difference]: Without dead ends: 2573 [2021-12-22 12:36:01,698 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 [2021-12-22 12:36:01,699 INFO L933 BasicCegarLoop]: 4266 mSDtfsCounter, 4590 mSDsluCounter, 12352 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4601 SdHoareTripleChecker+Valid, 16618 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:01,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4601 Valid, 16618 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:36:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-12-22 12:36:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2466. [2021-12-22 12:36:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (34), 31 states have call predecessors, (34), 31 states have call successors, (34) [2021-12-22 12:36:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4481 transitions. [2021-12-22 12:36:01,751 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4481 transitions. Word has length 90 [2021-12-22 12:36:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:01,752 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4481 transitions. [2021-12-22 12:36:01,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:36:01,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4481 transitions. [2021-12-22 12:36:01,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:01,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:01,754 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] [2021-12-22 12:36:01,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:36:01,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:01,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:01,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2021-12-22 12:36:01,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:01,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552464147] [2021-12-22 12:36:01,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:01,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:01,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:01,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552464147] [2021-12-22 12:36:01,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552464147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:01,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:01,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:01,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918241988] [2021-12-22 12:36:01,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:01,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:01,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:01,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:01,870 INFO L87 Difference]: Start difference. First operand 2466 states and 4481 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:02,895 INFO L93 Difference]: Finished difference Result 3131 states and 5513 transitions. [2021-12-22 12:36:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:02,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:02,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:02,904 INFO L225 Difference]: With dead ends: 3131 [2021-12-22 12:36:02,905 INFO L226 Difference]: Without dead ends: 2798 [2021-12-22 12:36:02,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:02,907 INFO L933 BasicCegarLoop]: 4389 mSDtfsCounter, 4588 mSDsluCounter, 16723 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4599 SdHoareTripleChecker+Valid, 21112 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:02,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4599 Valid, 21112 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:36:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2021-12-22 12:36:02,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2623. [2021-12-22 12:36:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2557 states have (on average 1.8075870160344154) internal successors, (4622), 2561 states have internal predecessors, (4622), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (49), 45 states have call predecessors, (49), 44 states have call successors, (49) [2021-12-22 12:36:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 4715 transitions. [2021-12-22 12:36:02,956 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 4715 transitions. Word has length 90 [2021-12-22 12:36:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:02,957 INFO L470 AbstractCegarLoop]: Abstraction has 2623 states and 4715 transitions. [2021-12-22 12:36:02,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 4715 transitions. [2021-12-22 12:36:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:02,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:02,958 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] [2021-12-22 12:36:02,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:36:02,959 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:02,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -583228136, now seen corresponding path program 1 times [2021-12-22 12:36:02,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:02,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058745901] [2021-12-22 12:36:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:02,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:03,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:03,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:03,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:03,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058745901] [2021-12-22 12:36:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058745901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:03,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:03,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:03,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352094800] [2021-12-22 12:36:03,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:03,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:03,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:03,032 INFO L87 Difference]: Start difference. First operand 2623 states and 4715 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:03,944 INFO L93 Difference]: Finished difference Result 3709 states and 6395 transitions. [2021-12-22 12:36:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:03,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:03,956 INFO L225 Difference]: With dead ends: 3709 [2021-12-22 12:36:03,957 INFO L226 Difference]: Without dead ends: 3219 [2021-12-22 12:36:03,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:03,967 INFO L933 BasicCegarLoop]: 4278 mSDtfsCounter, 4633 mSDsluCounter, 16446 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 20724 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:03,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4644 Valid, 20724 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1135 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:36:03,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2021-12-22 12:36:04,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 2938. [2021-12-22 12:36:04,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2832 states have (on average 1.7778954802259888) internal successors, (5035), 2838 states have internal predecessors, (5035), 70 states have call successors, (70), 30 states have call predecessors, (70), 34 states have return successors, (83), 73 states have call predecessors, (83), 70 states have call successors, (83) [2021-12-22 12:36:04,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 5188 transitions. [2021-12-22 12:36:04,055 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 5188 transitions. Word has length 90 [2021-12-22 12:36:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:04,056 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 5188 transitions. [2021-12-22 12:36:04,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:04,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 5188 transitions. [2021-12-22 12:36:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:04,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:04,065 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] [2021-12-22 12:36:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:36:04,065 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:04,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1800696602, now seen corresponding path program 1 times [2021-12-22 12:36:04,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:04,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23218841] [2021-12-22 12:36:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:04,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:04,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:04,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23218841] [2021-12-22 12:36:04,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23218841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:04,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:04,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:04,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950276831] [2021-12-22 12:36:04,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:04,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:04,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:04,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:04,162 INFO L87 Difference]: Start difference. First operand 2938 states and 5188 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:05,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:05,243 INFO L93 Difference]: Finished difference Result 4824 states and 8092 transitions. [2021-12-22 12:36:05,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:05,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:05,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:05,257 INFO L225 Difference]: With dead ends: 4824 [2021-12-22 12:36:05,258 INFO L226 Difference]: Without dead ends: 4019 [2021-12-22 12:36:05,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:05,262 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4583 mSDsluCounter, 16719 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 21096 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:05,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 21096 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:36:05,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2021-12-22 12:36:05,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 3569. [2021-12-22 12:36:05,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3383 states have (on average 1.7324859592078037) internal successors, (5861), 3393 states have internal predecessors, (5861), 122 states have call successors, (122), 54 states have call predecessors, (122), 62 states have return successors, (157), 129 states have call predecessors, (157), 122 states have call successors, (157) [2021-12-22 12:36:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6140 transitions. [2021-12-22 12:36:05,367 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6140 transitions. Word has length 90 [2021-12-22 12:36:05,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:05,367 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 6140 transitions. [2021-12-22 12:36:05,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:05,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6140 transitions. [2021-12-22 12:36:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:05,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:05,369 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] [2021-12-22 12:36:05,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:36:05,370 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1877597400, now seen corresponding path program 1 times [2021-12-22 12:36:05,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:05,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314283007] [2021-12-22 12:36:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:05,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:05,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:05,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314283007] [2021-12-22 12:36:05,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314283007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:05,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:05,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:05,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947943482] [2021-12-22 12:36:05,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:05,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:05,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:05,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:05,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:05,439 INFO L87 Difference]: Start difference. First operand 3569 states and 6140 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:06,637 INFO L93 Difference]: Finished difference Result 7566 states and 12260 transitions. [2021-12-22 12:36:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:36:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:06,661 INFO L225 Difference]: With dead ends: 7566 [2021-12-22 12:36:06,661 INFO L226 Difference]: Without dead ends: 6130 [2021-12-22 12:36:06,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:36:06,669 INFO L933 BasicCegarLoop]: 4367 mSDtfsCounter, 4752 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21078 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:06,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 21078 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:36:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2021-12-22 12:36:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 4821. [2021-12-22 12:36:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4483 states have (on average 1.677671202319875) internal successors, (7521), 4501 states have internal predecessors, (7521), 218 states have call successors, (218), 102 states have call predecessors, (218), 118 states have return successors, (315), 233 states have call predecessors, (315), 218 states have call successors, (315) [2021-12-22 12:36:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8054 transitions. [2021-12-22 12:36:06,906 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8054 transitions. Word has length 90 [2021-12-22 12:36:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:06,907 INFO L470 AbstractCegarLoop]: Abstraction has 4821 states and 8054 transitions. [2021-12-22 12:36:06,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:06,907 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8054 transitions. [2021-12-22 12:36:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:06,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:06,910 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] [2021-12-22 12:36:06,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:36:06,910 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:06,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -508912106, now seen corresponding path program 1 times [2021-12-22 12:36:06,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:06,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862265601] [2021-12-22 12:36:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:06,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:06,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862265601] [2021-12-22 12:36:06,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862265601] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:06,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:06,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:06,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170635406] [2021-12-22 12:36:06,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:06,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:06,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:06,992 INFO L87 Difference]: Start difference. First operand 4821 states and 8054 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:08,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:08,236 INFO L93 Difference]: Finished difference Result 12284 states and 19516 transitions. [2021-12-22 12:36:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:36:08,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:08,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:08,270 INFO L225 Difference]: With dead ends: 12284 [2021-12-22 12:36:08,270 INFO L226 Difference]: Without dead ends: 9596 [2021-12-22 12:36:08,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:36:08,281 INFO L933 BasicCegarLoop]: 4421 mSDtfsCounter, 4609 mSDsluCounter, 16708 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4619 SdHoareTripleChecker+Valid, 21129 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:08,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4619 Valid, 21129 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:36:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9596 states. [2021-12-22 12:36:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9596 to 7234. [2021-12-22 12:36:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7234 states, 6600 states have (on average 1.6234848484848485) internal successors, (10715), 6634 states have internal predecessors, (10715), 402 states have call successors, (402), 198 states have call predecessors, (402), 230 states have return successors, (677), 433 states have call predecessors, (677), 402 states have call successors, (677) [2021-12-22 12:36:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7234 states to 7234 states and 11794 transitions. [2021-12-22 12:36:08,515 INFO L78 Accepts]: Start accepts. Automaton has 7234 states and 11794 transitions. Word has length 90 [2021-12-22 12:36:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:08,516 INFO L470 AbstractCegarLoop]: Abstraction has 7234 states and 11794 transitions. [2021-12-22 12:36:08,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 7234 states and 11794 transitions. [2021-12-22 12:36:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:08,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:08,521 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] [2021-12-22 12:36:08,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:36:08,521 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1001538280, now seen corresponding path program 1 times [2021-12-22 12:36:08,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134040374] [2021-12-22 12:36:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:08,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:08,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134040374] [2021-12-22 12:36:08,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134040374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:08,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:08,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:08,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746621745] [2021-12-22 12:36:08,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:08,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:08,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:08,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:08,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:08,605 INFO L87 Difference]: Start difference. First operand 7234 states and 11794 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:09,991 INFO L93 Difference]: Finished difference Result 21183 states and 33370 transitions. [2021-12-22 12:36:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:36:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:09,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:10,053 INFO L225 Difference]: With dead ends: 21183 [2021-12-22 12:36:10,053 INFO L226 Difference]: Without dead ends: 16082 [2021-12-22 12:36:10,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:36:10,076 INFO L933 BasicCegarLoop]: 4357 mSDtfsCounter, 4672 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1228 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 21068 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:10,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4688 Valid, 21068 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1228 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 12:36:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16082 states. [2021-12-22 12:36:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16082 to 12123. [2021-12-22 12:36:10,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12123 states, 10913 states have (on average 1.5802254192247778) internal successors, (17245), 10979 states have internal predecessors, (17245), 754 states have call successors, (754), 390 states have call predecessors, (754), 454 states have return successors, (1547), 817 states have call predecessors, (1547), 754 states have call successors, (1547) [2021-12-22 12:36:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12123 states to 12123 states and 19546 transitions. [2021-12-22 12:36:10,577 INFO L78 Accepts]: Start accepts. Automaton has 12123 states and 19546 transitions. Word has length 90 [2021-12-22 12:36:10,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:10,577 INFO L470 AbstractCegarLoop]: Abstraction has 12123 states and 19546 transitions. [2021-12-22 12:36:10,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 12123 states and 19546 transitions. [2021-12-22 12:36:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:10,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:10,585 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] [2021-12-22 12:36:10,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:36:10,585 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:10,585 INFO L85 PathProgramCache]: Analyzing trace with hash -47598122, now seen corresponding path program 1 times [2021-12-22 12:36:10,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:10,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403710417] [2021-12-22 12:36:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:10,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:10,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:10,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403710417] [2021-12-22 12:36:10,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403710417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:10,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:10,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:10,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399823356] [2021-12-22 12:36:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:10,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:10,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:10,641 INFO L87 Difference]: Start difference. First operand 12123 states and 19546 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:12,647 INFO L93 Difference]: Finished difference Result 38598 states and 61136 transitions. [2021-12-22 12:36:12,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:36:12,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:12,732 INFO L225 Difference]: With dead ends: 38598 [2021-12-22 12:36:12,732 INFO L226 Difference]: Without dead ends: 28608 [2021-12-22 12:36:12,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:36:12,765 INFO L933 BasicCegarLoop]: 4352 mSDtfsCounter, 4632 mSDsluCounter, 16711 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 21063 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:12,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4648 Valid, 21063 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:36:12,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28608 states. [2021-12-22 12:36:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28608 to 21868. [2021-12-22 12:36:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21868 states, 19538 states have (on average 1.5526154161121917) internal successors, (30335), 19668 states have internal predecessors, (30335), 1426 states have call successors, (1426), 774 states have call predecessors, (1426), 902 states have return successors, (3741), 1553 states have call predecessors, (3741), 1426 states have call successors, (3741) [2021-12-22 12:36:13,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21868 states to 21868 states and 35502 transitions. [2021-12-22 12:36:13,676 INFO L78 Accepts]: Start accepts. Automaton has 21868 states and 35502 transitions. Word has length 90 [2021-12-22 12:36:13,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:13,676 INFO L470 AbstractCegarLoop]: Abstraction has 21868 states and 35502 transitions. [2021-12-22 12:36:13,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 21868 states and 35502 transitions. [2021-12-22 12:36:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:13,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:13,689 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] [2021-12-22 12:36:13,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:36:13,690 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1263751848, now seen corresponding path program 1 times [2021-12-22 12:36:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:13,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253918605] [2021-12-22 12:36:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:13,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:13,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:13,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:13,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253918605] [2021-12-22 12:36:13,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253918605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:13,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:13,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:13,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624307431] [2021-12-22 12:36:13,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:13,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:13,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:13,763 INFO L87 Difference]: Start difference. First operand 21868 states and 35502 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:16,722 INFO L93 Difference]: Finished difference Result 72173 states and 116654 transitions. [2021-12-22 12:36:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:36:16,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:16,919 INFO L225 Difference]: With dead ends: 72173 [2021-12-22 12:36:16,919 INFO L226 Difference]: Without dead ends: 52438 [2021-12-22 12:36:16,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 12:36:16,979 INFO L933 BasicCegarLoop]: 4353 mSDtfsCounter, 4577 mSDsluCounter, 16696 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 21049 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:16,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4587 Valid, 21049 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:36:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2021-12-22 12:36:18,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 41269. [2021-12-22 12:36:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41269 states, 36779 states have (on average 1.5380787949645178) internal successors, (56569), 37037 states have internal predecessors, (56569), 2698 states have call successors, (2698), 1534 states have call predecessors, (2698), 1790 states have return successors, (9515), 2953 states have call predecessors, (9515), 2698 states have call successors, (9515) [2021-12-22 12:36:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41269 states to 41269 states and 68782 transitions. [2021-12-22 12:36:18,801 INFO L78 Accepts]: Start accepts. Automaton has 41269 states and 68782 transitions. Word has length 90 [2021-12-22 12:36:18,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:18,801 INFO L470 AbstractCegarLoop]: Abstraction has 41269 states and 68782 transitions. [2021-12-22 12:36:18,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-12-22 12:36:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 41269 states and 68782 transitions. [2021-12-22 12:36:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-22 12:36:18,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:18,837 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] [2021-12-22 12:36:18,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:36:18,837 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:18,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1995719274, now seen corresponding path program 1 times [2021-12-22 12:36:18,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:18,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155927498] [2021-12-22 12:36:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:18,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:18,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:18,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:18,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155927498] [2021-12-22 12:36:18,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155927498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:18,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:18,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:36:18,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150655578] [2021-12-22 12:36:18,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:18,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:36:18,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:36:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:36:18,906 INFO L87 Difference]: Start difference. First operand 41269 states and 68782 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:36:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:22,817 INFO L93 Difference]: Finished difference Result 113490 states and 185399 transitions. [2021-12-22 12:36:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:36:22,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2021-12-22 12:36:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:23,103 INFO L225 Difference]: With dead ends: 113490 [2021-12-22 12:36:23,104 INFO L226 Difference]: Without dead ends: 74355 [2021-12-22 12:36:23,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:36:23,220 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 4774 mSDsluCounter, 12431 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4803 SdHoareTripleChecker+Valid, 16906 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:23,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4803 Valid, 16906 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 12:36:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74355 states. [2021-12-22 12:36:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74355 to 60660. [2021-12-22 12:36:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60660 states, 53846 states have (on average 1.5203729153511867) internal successors, (81866), 54361 states have internal predecessors, (81866), 4120 states have call successors, (4120), 2308 states have call predecessors, (4120), 2692 states have return successors, (13125), 4246 states have call predecessors, (13125), 4120 states have call successors, (13125) [2021-12-22 12:36:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60660 states to 60660 states and 99111 transitions. [2021-12-22 12:36:26,309 INFO L78 Accepts]: Start accepts. Automaton has 60660 states and 99111 transitions. Word has length 90 [2021-12-22 12:36:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:26,309 INFO L470 AbstractCegarLoop]: Abstraction has 60660 states and 99111 transitions. [2021-12-22 12:36:26,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-12-22 12:36:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 60660 states and 99111 transitions. [2021-12-22 12:36:26,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 12:36:26,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:26,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:36:26,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:36:26,426 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:26,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:26,426 INFO L85 PathProgramCache]: Analyzing trace with hash 499790298, now seen corresponding path program 1 times [2021-12-22 12:36:26,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:26,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126715576] [2021-12-22 12:36:26,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:26,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 12:36:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 12:36:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:36:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 12:36:26,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:26,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126715576] [2021-12-22 12:36:26,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126715576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:36:26,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923956091] [2021-12-22 12:36:26,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:26,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:36:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:36:26,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 12:36:26,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 12:36:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 12:36:26,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:36:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-22 12:36:26,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:36:26,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923956091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:26,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 12:36:26,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-22 12:36:26,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238909334] [2021-12-22 12:36:26,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:26,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:36:26,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:26,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:36:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:36:26,903 INFO L87 Difference]: Start difference. First operand 60660 states and 99111 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 12:36:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:31,190 INFO L93 Difference]: Finished difference Result 176333 states and 288761 transitions. [2021-12-22 12:36:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:36:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 146 [2021-12-22 12:36:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:31,698 INFO L225 Difference]: With dead ends: 176333 [2021-12-22 12:36:31,698 INFO L226 Difference]: Without dead ends: 117807 [2021-12-22 12:36:31,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:36:31,807 INFO L933 BasicCegarLoop]: 4233 mSDtfsCounter, 4173 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4173 SdHoareTripleChecker+Valid, 4470 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:31,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4173 Valid, 4470 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:36:31,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117807 states. [2021-12-22 12:36:36,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117807 to 117033. [2021-12-22 12:36:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117033 states, 103621 states have (on average 1.5118653554781367) internal successors, (156661), 104649 states have internal predecessors, (156661), 8034 states have call successors, (8034), 4608 states have call predecessors, (8034), 5376 states have return successors, (25789), 8031 states have call predecessors, (25789), 8034 states have call successors, (25789) [2021-12-22 12:36:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117033 states to 117033 states and 190484 transitions. [2021-12-22 12:36:37,518 INFO L78 Accepts]: Start accepts. Automaton has 117033 states and 190484 transitions. Word has length 146 [2021-12-22 12:36:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:37,519 INFO L470 AbstractCegarLoop]: Abstraction has 117033 states and 190484 transitions. [2021-12-22 12:36:37,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-22 12:36:37,519 INFO L276 IsEmpty]: Start isEmpty. Operand 117033 states and 190484 transitions. [2021-12-22 12:36:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 12:36:37,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:37,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:36:37,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 12:36:37,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 12:36:37,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1368264198, now seen corresponding path program 1 times [2021-12-22 12:36:37,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556162016] [2021-12-22 12:36:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:37,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-22 12:36:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 12:36:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 12:36:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 12:36:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 12:36:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 12:36:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 12:36:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-22 12:36:37,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:37,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556162016] [2021-12-22 12:36:37,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556162016] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:36:37,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338504680] [2021-12-22 12:36:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:37,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:36:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:36:38,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 12:36:38,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 12:36:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 12:36:38,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:36:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 12:36:38,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 12:36:38,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338504680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:38,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 12:36:38,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-22 12:36:38,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79934642] [2021-12-22 12:36:38,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:38,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:36:38,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:36:38,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:36:38,314 INFO L87 Difference]: Start difference. First operand 117033 states and 190484 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)