./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-2.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_label43+token_ring.13.cil-2.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 e409b9fe4cf385d3ba251b64c82a83b23d76f184ce08a1cc7bc20e4c4b1f5571 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:35:25,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:35:25,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:35:25,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:35:25,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:35:25,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:35:25,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:35:25,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:35:25,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:35:25,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:35:25,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:35:25,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:35:25,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:35:25,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:35:25,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:35:25,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:35:25,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:35:25,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:35:25,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:35:25,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:35:25,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:35:25,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:35:25,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:35:25,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:35:25,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:35:25,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:35:25,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:35:25,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:35:25,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:35:25,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:35:25,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:35:25,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:35:25,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:35:25,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:35:25,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:35:25,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:35:25,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:35:25,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:35:25,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:35:25,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:35:25,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:35:25,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:35:25,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:35:25,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:35:25,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:35:25,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:35:25,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:35:25,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:35:25,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:35:25,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:35:25,626 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:35:25,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:35:25,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:35:25,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:35:25,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:35:25,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:35:25,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:35:25,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:35:25,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:35:25,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:35:25,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:35:25,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:35:25,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:35:25,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:35:25,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:35:25,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:35:25,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:35:25,631 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:35:25,632 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:35:25,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:35:25,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:35:25,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e409b9fe4cf385d3ba251b64c82a83b23d76f184ce08a1cc7bc20e4c4b1f5571 [2021-12-22 12:35:25,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:35:25,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:35:25,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:35:25,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:35:25,867 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:35:25,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-2.c [2021-12-22 12:35:25,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5f048c6/cc7d0609dc2847328dee00d5348c4fb3/FLAGe09651da6 [2021-12-22 12:35:26,686 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:35:26,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label43+token_ring.13.cil-2.c [2021-12-22 12:35:26,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5f048c6/cc7d0609dc2847328dee00d5348c4fb3/FLAGe09651da6 [2021-12-22 12:35:26,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d5f048c6/cc7d0609dc2847328dee00d5348c4fb3 [2021-12-22 12:35:26,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:35:26,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:35:26,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:35:26,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:35:26,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:35:26,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:26" (1/1) ... [2021-12-22 12:35:26,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61579352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:26, skipping insertion in model container [2021-12-22 12:35:26,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:35:26" (1/1) ... [2021-12-22 12:35:26,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:35:27,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:35:28,701 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_label43+token_ring.13.cil-2.c[381679,381692] [2021-12-22 12:35:28,720 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_label43+token_ring.13.cil-2.c[383339,383352] [2021-12-22 12:35:28,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:35:28,956 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:35:29,794 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_label43+token_ring.13.cil-2.c[381679,381692] [2021-12-22 12:35:29,798 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_label43+token_ring.13.cil-2.c[383339,383352] [2021-12-22 12:35:29,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:35:29,873 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:35:29,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29 WrapperNode [2021-12-22 12:35:29,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:35:29,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:35:29,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:35:29,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:35:29,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:29,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,347 INFO L137 Inliner]: procedures = 70, calls = 80, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 13257 [2021-12-22 12:35:30,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:35:30,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:35:30,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:35:30,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:35:30,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:35:30,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:35:30,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:35:30,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:35:30,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (1/1) ... [2021-12-22 12:35:30,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:35:30,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:35:30,876 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 12:35:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:35:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-22 12:35:30,904 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-22 12:35:30,904 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-22 12:35:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-22 12:35:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-22 12:35:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-22 12:35:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-22 12:35:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-22 12:35:30,905 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-22 12:35:30,905 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-22 12:35:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-22 12:35:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-22 12:35:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:35:30,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:35:30,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:35:30,882 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 12:35:31,102 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:35:31,104 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:35:37,183 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:35:37,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:35:37,205 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-22 12:35:37,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:35:37 BoogieIcfgContainer [2021-12-22 12:35:37,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:35:37,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:35:37,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:35:37,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:35:37,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:35:26" (1/3) ... [2021-12-22 12:35:37,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0a2f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:35:37, skipping insertion in model container [2021-12-22 12:35:37,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:35:29" (2/3) ... [2021-12-22 12:35:37,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a0a2f27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:35:37, skipping insertion in model container [2021-12-22 12:35:37,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:35:37" (3/3) ... [2021-12-22 12:35:37,220 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.13.cil-2.c [2021-12-22 12:35:37,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:35:37,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 12:35:37,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:35:37,275 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 12:35:37,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 12:35:37,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:35:37,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:37,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:37,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:37,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash -521467325, now seen corresponding path program 1 times [2021-12-22 12:35:37,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:37,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087673299] [2021-12-22 12:35:37,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:37,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:37,904 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 12:35:37,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:37,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087673299] [2021-12-22 12:35:37,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087673299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:37,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:37,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:35:37,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390253771] [2021-12-22 12:35:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:37,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:35:37,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:37,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:35:37,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:35:37,947 INFO L87 Difference]: Start difference. First operand has 2590 states, 2554 states have (on average 1.841816758026625) internal successors, (4704), 2557 states have internal predecessors, (4704), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 12:35:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:39,736 INFO L93 Difference]: Finished difference Result 5325 states and 9765 transitions. [2021-12-22 12:35:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:35:39,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:39,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:39,769 INFO L225 Difference]: With dead ends: 5325 [2021-12-22 12:35:39,769 INFO L226 Difference]: Without dead ends: 2676 [2021-12-22 12:35:39,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:35:39,785 INFO L933 BasicCegarLoop]: 4729 mSDtfsCounter, 1107 mSDsluCounter, 12512 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 17241 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:39,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 17241 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:35:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-22 12:35:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-22 12:35:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8243569131832797) internal successors, (4539), 2490 states have internal predecessors, (4539), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:35:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4593 transitions. [2021-12-22 12:35:39,949 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4593 transitions. Word has length 189 [2021-12-22 12:35:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:39,950 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4593 transitions. [2021-12-22 12:35:39,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 12:35:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4593 transitions. [2021-12-22 12:35:39,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:39,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:39,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:39,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:35:39,965 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:39,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:39,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1444519429, now seen corresponding path program 1 times [2021-12-22 12:35:39,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:39,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117309493] [2021-12-22 12:35:39,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:39,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:40,191 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 12:35:40,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:40,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117309493] [2021-12-22 12:35:40,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117309493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:40,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:40,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:35:40,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548461301] [2021-12-22 12:35:40,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:40,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:35:40,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:40,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:35:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:35:40,195 INFO L87 Difference]: Start difference. First operand 2523 states and 4593 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 12:35:41,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:41,813 INFO L93 Difference]: Finished difference Result 3061 states and 5463 transitions. [2021-12-22 12:35:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 12:35:41,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:41,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:41,826 INFO L225 Difference]: With dead ends: 3061 [2021-12-22 12:35:41,826 INFO L226 Difference]: Without dead ends: 2676 [2021-12-22 12:35:41,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:35:41,829 INFO L933 BasicCegarLoop]: 4659 mSDtfsCounter, 1093 mSDsluCounter, 12309 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 16968 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:41,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 16968 Invalid, 816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 12:35:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2021-12-22 12:35:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2523. [2021-12-22 12:35:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2488 states have (on average 1.8239549839228295) internal successors, (4538), 2490 states have internal predecessors, (4538), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-22 12:35:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4592 transitions. [2021-12-22 12:35:41,897 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4592 transitions. Word has length 189 [2021-12-22 12:35:41,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:41,897 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 4592 transitions. [2021-12-22 12:35:41,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (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 12:35:41,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4592 transitions. [2021-12-22 12:35:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:41,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:41,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:41,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:35:41,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1347349561, now seen corresponding path program 1 times [2021-12-22 12:35:41,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:41,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735821555] [2021-12-22 12:35:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:41,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:41,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:42,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:42,088 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 12:35:42,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:42,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735821555] [2021-12-22 12:35:42,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735821555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:42,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:42,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:35:42,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690773926] [2021-12-22 12:35:42,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:42,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:35:42,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:42,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:35:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:35:42,092 INFO L87 Difference]: Start difference. First operand 2523 states and 4592 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (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 12:35:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:45,099 INFO L93 Difference]: Finished difference Result 3611 states and 6359 transitions. [2021-12-22 12:35:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-22 12:35:45,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:45,112 INFO L225 Difference]: With dead ends: 3611 [2021-12-22 12:35:45,112 INFO L226 Difference]: Without dead ends: 3230 [2021-12-22 12:35:45,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:35:45,115 INFO L933 BasicCegarLoop]: 4715 mSDtfsCounter, 5624 mSDsluCounter, 12944 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5644 SdHoareTripleChecker+Valid, 17659 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:45,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5644 Valid, 17659 Invalid, 2215 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:35:45,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2021-12-22 12:35:45,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 2925. [2021-12-22 12:35:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2861 states have (on average 1.7948269835721775) internal successors, (5135), 2864 states have internal predecessors, (5135), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-12-22 12:35:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5236 transitions. [2021-12-22 12:35:45,213 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5236 transitions. Word has length 189 [2021-12-22 12:35:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:45,214 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 5236 transitions. [2021-12-22 12:35:45,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (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 12:35:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5236 transitions. [2021-12-22 12:35:45,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:45,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:45,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:45,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:35:45,217 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:45,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 671278923, now seen corresponding path program 1 times [2021-12-22 12:35:45,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:45,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521337138] [2021-12-22 12:35:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:45,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:45,382 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 12:35:45,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521337138] [2021-12-22 12:35:45,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521337138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:45,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:45,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:35:45,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189040911] [2021-12-22 12:35:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:45,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:35:45,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:35:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:35:45,386 INFO L87 Difference]: Start difference. First operand 2925 states and 5236 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:49,143 INFO L93 Difference]: Finished difference Result 4589 states and 7942 transitions. [2021-12-22 12:35:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:35:49,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:49,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:49,161 INFO L225 Difference]: With dead ends: 4589 [2021-12-22 12:35:49,162 INFO L226 Difference]: Without dead ends: 3806 [2021-12-22 12:35:49,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:35:49,167 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 5662 mSDsluCounter, 17899 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 22935 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:49,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5682 Valid, 22935 Invalid, 3365 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 12:35:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-12-22 12:35:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3298. [2021-12-22 12:35:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3298 states, 3205 states have (on average 1.7703588143525741) internal successors, (5674), 3209 states have internal predecessors, (5674), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-12-22 12:35:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 5821 transitions. [2021-12-22 12:35:49,317 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 5821 transitions. Word has length 189 [2021-12-22 12:35:49,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:49,318 INFO L470 AbstractCegarLoop]: Abstraction has 3298 states and 5821 transitions. [2021-12-22 12:35:49,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:49,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 5821 transitions. [2021-12-22 12:35:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:49,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:49,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:49,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:35:49,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:49,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1053329399, now seen corresponding path program 1 times [2021-12-22 12:35:49,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:49,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092141690] [2021-12-22 12:35:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:49,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:49,514 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 12:35:49,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:49,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092141690] [2021-12-22 12:35:49,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092141690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:49,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:49,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:35:49,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92857352] [2021-12-22 12:35:49,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:49,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:35:49,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:49,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:35:49,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:35:49,518 INFO L87 Difference]: Start difference. First operand 3298 states and 5821 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:53,038 INFO L93 Difference]: Finished difference Result 6030 states and 10255 transitions. [2021-12-22 12:35:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:35:53,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:53,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:53,058 INFO L225 Difference]: With dead ends: 6030 [2021-12-22 12:35:53,058 INFO L226 Difference]: Without dead ends: 4874 [2021-12-22 12:35:53,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:35:53,063 INFO L933 BasicCegarLoop]: 5024 mSDtfsCounter, 5656 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5676 SdHoareTripleChecker+Valid, 22919 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:53,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5676 Valid, 22919 Invalid, 3360 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3276 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 12:35:53,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2021-12-22 12:35:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4048. [2021-12-22 12:35:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 3897 states have (on average 1.7344110854503465) internal successors, (6759), 3903 states have internal predecessors, (6759), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-12-22 12:35:53,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 7002 transitions. [2021-12-22 12:35:53,267 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 7002 transitions. Word has length 189 [2021-12-22 12:35:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:53,268 INFO L470 AbstractCegarLoop]: Abstraction has 4048 states and 7002 transitions. [2021-12-22 12:35:53,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:53,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 7002 transitions. [2021-12-22 12:35:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:53,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:53,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:53,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:35:53,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash -483057593, now seen corresponding path program 1 times [2021-12-22 12:35:53,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:53,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38719584] [2021-12-22 12:35:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:53,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:53,460 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 12:35:53,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:53,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38719584] [2021-12-22 12:35:53,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38719584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:53,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:53,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:35:53,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065192165] [2021-12-22 12:35:53,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:53,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:35:53,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:35:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:35:53,463 INFO L87 Difference]: Start difference. First operand 4048 states and 7002 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:35:57,132 INFO L93 Difference]: Finished difference Result 8806 states and 14680 transitions. [2021-12-22 12:35:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:35:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:35:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:35:57,164 INFO L225 Difference]: With dead ends: 8806 [2021-12-22 12:35:57,164 INFO L226 Difference]: Without dead ends: 6900 [2021-12-22 12:35:57,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:35:57,173 INFO L933 BasicCegarLoop]: 5019 mSDtfsCounter, 5655 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5675 SdHoareTripleChecker+Valid, 22914 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 12:35:57,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5675 Valid, 22914 Invalid, 3352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 12:35:57,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2021-12-22 12:35:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 5549. [2021-12-22 12:35:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5282 states have (on average 1.690458159787959) internal successors, (8929), 5292 states have internal predecessors, (8929), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-12-22 12:35:57,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 9370 transitions. [2021-12-22 12:35:57,526 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 9370 transitions. Word has length 189 [2021-12-22 12:35:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:35:57,527 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 9370 transitions. [2021-12-22 12:35:57,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:35:57,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 9370 transitions. [2021-12-22 12:35:57,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:35:57,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:35:57,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:35:57,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:35:57,537 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:35:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:35:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 920811593, now seen corresponding path program 1 times [2021-12-22 12:35:57,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:35:57,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753363463] [2021-12-22 12:35:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:35:57,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:35:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:35:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:35:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:35:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:35:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:35:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:35:57,714 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 12:35:57,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:35:57,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753363463] [2021-12-22 12:35:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753363463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:35:57,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:35:57,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:35:57,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421891196] [2021-12-22 12:35:57,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:35:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:35:57,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:35:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:35:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:35:57,717 INFO L87 Difference]: Start difference. First operand 5549 states and 9370 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:01,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:01,335 INFO L93 Difference]: Finished difference Result 14357 states and 23546 transitions. [2021-12-22 12:36:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:01,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:36:01,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:01,376 INFO L225 Difference]: With dead ends: 14357 [2021-12-22 12:36:01,377 INFO L226 Difference]: Without dead ends: 10950 [2021-12-22 12:36:01,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:01,397 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 5654 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3260 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5674 SdHoareTripleChecker+Valid, 22909 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:01,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5674 Valid, 22909 Invalid, 3344 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3260 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:36:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2021-12-22 12:36:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 8558. [2021-12-22 12:36:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8059 states have (on average 1.6477230425611118) internal successors, (13279), 8077 states have internal predecessors, (13279), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-12-22 12:36:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 14134 transitions. [2021-12-22 12:36:01,979 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 14134 transitions. Word has length 189 [2021-12-22 12:36:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:01,979 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 14134 transitions. [2021-12-22 12:36:01,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:01,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 14134 transitions. [2021-12-22 12:36:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:36:01,985 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:01,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:36:01,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:36:01,986 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:01,987 INFO L85 PathProgramCache]: Analyzing trace with hash 134813703, now seen corresponding path program 1 times [2021-12-22 12:36:01,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:01,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339627877] [2021-12-22 12:36:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:01,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:36:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:36:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:36:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:36:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:02,158 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 12:36:02,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339627877] [2021-12-22 12:36:02,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339627877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:02,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:02,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:02,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970979333] [2021-12-22 12:36:02,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:02,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:02,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:02,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:02,161 INFO L87 Difference]: Start difference. First operand 8558 states and 14134 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:06,176 INFO L93 Difference]: Finished difference Result 25460 states and 41340 transitions. [2021-12-22 12:36:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:36:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:06,242 INFO L225 Difference]: With dead ends: 25460 [2021-12-22 12:36:06,243 INFO L226 Difference]: Without dead ends: 19044 [2021-12-22 12:36:06,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:06,271 INFO L933 BasicCegarLoop]: 4750 mSDtfsCounter, 5763 mSDsluCounter, 17208 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 21958 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:06,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5783 Valid, 21958 Invalid, 3016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-22 12:36:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2021-12-22 12:36:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 14591. [2021-12-22 12:36:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.6143968300557676) internal successors, (22001), 13662 states have internal predecessors, (22001), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:36:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23738 transitions. [2021-12-22 12:36:07,193 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23738 transitions. Word has length 189 [2021-12-22 12:36:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:07,193 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23738 transitions. [2021-12-22 12:36:07,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23738 transitions. [2021-12-22 12:36:07,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:36:07,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:07,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:36:07,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:36:07,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:07,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 802195593, now seen corresponding path program 1 times [2021-12-22 12:36:07,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:07,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040903208] [2021-12-22 12:36:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:07,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:36:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:36:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:36:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:36:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:36:07,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040903208] [2021-12-22 12:36:07,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040903208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:07,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:07,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:07,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568074775] [2021-12-22 12:36:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:07,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:07,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:07,368 INFO L87 Difference]: Start difference. First operand 14591 states and 23738 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:10,460 INFO L93 Difference]: Finished difference Result 31774 states and 51709 transitions. [2021-12-22 12:36:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:36:10,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:36:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:10,528 INFO L225 Difference]: With dead ends: 31774 [2021-12-22 12:36:10,528 INFO L226 Difference]: Without dead ends: 19325 [2021-12-22 12:36:10,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:36:10,569 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 5161 mSDsluCounter, 16825 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5182 SdHoareTripleChecker+Valid, 21462 SdHoareTripleChecker+Invalid, 1671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:10,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5182 Valid, 21462 Invalid, 1671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [87 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 12:36:10,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19325 states. [2021-12-22 12:36:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19325 to 14591. [2021-12-22 12:36:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14591 states, 13628 states have (on average 1.611975344878192) internal successors, (21968), 13662 states have internal predecessors, (21968), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-12-22 12:36:11,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14591 states to 14591 states and 23705 transitions. [2021-12-22 12:36:11,571 INFO L78 Accepts]: Start accepts. Automaton has 14591 states and 23705 transitions. Word has length 189 [2021-12-22 12:36:11,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:36:11,571 INFO L470 AbstractCegarLoop]: Abstraction has 14591 states and 23705 transitions. [2021-12-22 12:36:11,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 14591 states and 23705 transitions. [2021-12-22 12:36:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-22 12:36:11,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:36:11,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:36:11,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:36:11,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 12:36:11,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:36:11,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1393033273, now seen corresponding path program 1 times [2021-12-22 12:36:11,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:36:11,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715994329] [2021-12-22 12:36:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:36:11,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:36:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 12:36:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-22 12:36:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 12:36:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 12:36:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-22 12:36:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:36:11,745 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 12:36:11,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:36:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715994329] [2021-12-22 12:36:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715994329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:36:11,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:36:11,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:36:11,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569307300] [2021-12-22 12:36:11,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:36:11,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 12:36:11,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:36:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 12:36:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 12:36:11,748 INFO L87 Difference]: Start difference. First operand 14591 states and 23705 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 12:36:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:36:17,402 INFO L93 Difference]: Finished difference Result 47633 states and 76890 transitions. [2021-12-22 12:36:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:36:17,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (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 189 [2021-12-22 12:36:17,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:36:17,528 INFO L225 Difference]: With dead ends: 47633 [2021-12-22 12:36:17,528 INFO L226 Difference]: Without dead ends: 35184 [2021-12-22 12:36:17,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-22 12:36:17,573 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 5645 mSDsluCounter, 17895 mSDsCounter, 0 mSdLazyCounter, 3225 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5665 SdHoareTripleChecker+Valid, 22893 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:36:17,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5665 Valid, 22893 Invalid, 3309 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3225 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-22 12:36:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35184 states.