./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF --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 ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:00:03,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:00:03,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:00:03,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:00:03,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:00:03,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:00:03,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:00:03,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:00:03,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:00:03,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:00:03,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:00:03,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:00:03,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:00:03,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:00:03,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:00:03,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:00:03,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:00:03,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:00:03,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:00:03,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:00:03,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:00:03,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:00:03,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:00:03,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:00:03,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:00:03,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:00:03,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:00:03,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:00:03,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:00:03,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:00:03,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:00:03,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:00:03,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:00:03,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:00:03,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:00:03,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:00:03,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:00:03,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:00:03,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:00:03,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:00:03,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:00:03,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:00:03,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:00:03,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:00:03,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:00:03,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:00:03,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:00:03,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:00:03,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:00:03,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:00:03,870 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:00:03,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:00:03,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:00:03,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:00:03,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:00:03,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:00:03,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:00:03,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:00:03,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:00:03,872 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:00:03,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:00:03,873 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:00:03,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:00:03,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:00:03,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:00:03,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:00:03,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:03,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:00:03,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:00:03,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:00:03,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:00:03,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:00:03,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:00:03,876 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:00:03,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:00:03,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:00:03,877 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae9f818c1f032966d67b2bd4627e73bc680f5fe59ca24bfc7cff4e83563ff8e3 [2021-11-20 07:00:04,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:00:04,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:00:04,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:00:04,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:00:04,138 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:00:04,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2021-11-20 07:00:04,215 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/data/e94ced2d7/6cd70783a7d545dd8deaeb523f5b4cc7/FLAG39530a6a7 [2021-11-20 07:00:05,421 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:00:05,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c [2021-11-20 07:00:05,477 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/data/e94ced2d7/6cd70783a7d545dd8deaeb523f5b4cc7/FLAG39530a6a7 [2021-11-20 07:00:05,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/data/e94ced2d7/6cd70783a7d545dd8deaeb523f5b4cc7 [2021-11-20 07:00:05,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:00:05,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:00:05,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:05,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:00:05,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:00:05,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:05" (1/1) ... [2021-11-20 07:00:05,652 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f84d1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:05, skipping insertion in model container [2021-11-20 07:00:05,652 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:00:05" (1/1) ... [2021-11-20 07:00:05,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:00:05,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:00:08,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2021-11-20 07:00:08,189 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2021-11-20 07:00:08,564 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:08,580 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:00:09,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[376251,376264] [2021-11-20 07:00:09,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/sv-benchmarks/c/combinations/Problem05_label41+token_ring.11.cil-2.c[383339,383352] [2021-11-20 07:00:09,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:00:09,953 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:00:09,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09 WrapperNode [2021-11-20 07:00:09,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:00:09,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:09,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:00:09,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:00:09,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:10,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:10,592 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2021-11-20 07:00:10,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:00:10,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:00:10,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:00:10,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:00:10,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:10,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:10,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:10,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:11,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:11,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:11,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:11,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:00:11,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:00:11,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:00:11,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:00:11,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (1/1) ... [2021-11-20 07:00:11,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:00:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:00:11,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:00:11,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a268ea6b-2c4f-4fdc-a6e4-1a4bce2c0cfc/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:00:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:00:11,338 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 07:00:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 07:00:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 07:00:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 07:00:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 07:00:11,339 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 07:00:11,339 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 07:00:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 07:00:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 07:00:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 07:00:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 07:00:11,340 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 07:00:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:00:11,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:00:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:00:11,494 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:00:11,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:00:18,985 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:00:19,029 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:00:19,030 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-20 07:00:19,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:19 BoogieIcfgContainer [2021-11-20 07:00:19,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:00:19,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:00:19,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:00:19,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:00:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:00:05" (1/3) ... [2021-11-20 07:00:19,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41e0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:19, skipping insertion in model container [2021-11-20 07:00:19,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:00:09" (2/3) ... [2021-11-20 07:00:19,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41e0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:00:19, skipping insertion in model container [2021-11-20 07:00:19,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:00:19" (3/3) ... [2021-11-20 07:00:19,049 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.11.cil-2.c [2021-11-20 07:00:19,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:00:19,054 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:00:19,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:00:19,140 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 [2021-11-20 07:00:19,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:00:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 07:00:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:19,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:19,260 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] [2021-11-20 07:00:19,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2021-11-20 07:00:19,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:19,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929019326] [2021-11-20 07:00:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:19,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:19,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929019326] [2021-11-20 07:00:19,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929019326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:19,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:19,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:00:19,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234234897] [2021-11-20 07:00:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:19,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:00:19,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:00:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:00:19,984 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-20 07:00:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:22,060 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2021-11-20 07:00:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:00:22,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:22,093 INFO L225 Difference]: With dead ends: 5199 [2021-11-20 07:00:22,094 INFO L226 Difference]: Without dead ends: 2604 [2021-11-20 07:00:22,103 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 [2021-11-20 07:00:22,107 INFO L933 BasicCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12458 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17095 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:22,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 17095 Invalid, 709 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:00:22,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-11-20 07:00:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2021-11-20 07:00:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-11-20 07:00:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2021-11-20 07:00:22,293 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2021-11-20 07:00:22,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:22,295 INFO L470 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2021-11-20 07:00:22,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-11-20 07:00:22,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2021-11-20 07:00:22,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:22,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:22,311 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] [2021-11-20 07:00:22,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:00:22,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:22,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:22,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2021-11-20 07:00:22,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:22,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910035727] [2021-11-20 07:00:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:22,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:22,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910035727] [2021-11-20 07:00:22,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910035727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:22,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:22,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:00:22,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810889676] [2021-11-20 07:00:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:22,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:00:22,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:22,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:00:22,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:00:22,706 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-11-20 07:00:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:26,429 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2021-11-20 07:00:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:00:26,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:26,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:26,454 INFO L225 Difference]: With dead ends: 3417 [2021-11-20 07:00:26,455 INFO L226 Difference]: Without dead ends: 3084 [2021-11-20 07:00:26,458 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 [2021-11-20 07:00:26,459 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12814 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17430 SdHoareTripleChecker+Invalid, 1922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:26,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5413 Valid, 17430 Invalid, 1922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 07:00:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2021-11-20 07:00:26,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2021-11-20 07:00:26,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-11-20 07:00:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2021-11-20 07:00:26,628 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2021-11-20 07:00:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:26,629 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2021-11-20 07:00:26,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2021-11-20 07:00:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2021-11-20 07:00:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:26,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:26,633 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] [2021-11-20 07:00:26,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:00:26,634 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:26,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2021-11-20 07:00:26,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:26,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062758771] [2021-11-20 07:00:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:26,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:26,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:26,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062758771] [2021-11-20 07:00:26,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062758771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:26,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:26,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:26,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828866263] [2021-11-20 07:00:26,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:26,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:26,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:26,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:26,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:26,939 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:29,117 INFO L93 Difference]: Finished difference Result 3787 states and 6636 transitions. [2021-11-20 07:00:29,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:29,139 INFO L225 Difference]: With dead ends: 3787 [2021-11-20 07:00:29,140 INFO L226 Difference]: Without dead ends: 3104 [2021-11-20 07:00:29,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:00:29,154 INFO L933 BasicCegarLoop]: 4563 mSDtfsCounter, 4992 mSDsluCounter, 16701 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5011 SdHoareTripleChecker+Valid, 21264 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:29,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5011 Valid, 21264 Invalid, 1488 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [75 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 07:00:29,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-11-20 07:00:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2823. [2021-11-20 07:00:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8002171552660151) internal successors, (4974), 2766 states have internal predecessors, (4974), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2021-11-20 07:00:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5067 transitions. [2021-11-20 07:00:29,317 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5067 transitions. Word has length 167 [2021-11-20 07:00:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:29,317 INFO L470 AbstractCegarLoop]: Abstraction has 2823 states and 5067 transitions. [2021-11-20 07:00:29,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5067 transitions. [2021-11-20 07:00:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:29,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:29,321 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] [2021-11-20 07:00:29,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:00:29,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:29,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:29,322 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2021-11-20 07:00:29,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:29,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720857124] [2021-11-20 07:00:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:29,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:29,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720857124] [2021-11-20 07:00:29,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720857124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:29,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:29,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:29,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196112923] [2021-11-20 07:00:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:29,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:29,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:29,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:29,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:29,499 INFO L87 Difference]: Start difference. First operand 2823 states and 5067 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:33,459 INFO L93 Difference]: Finished difference Result 4261 states and 7389 transitions. [2021-11-20 07:00:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:00:33,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:33,484 INFO L225 Difference]: With dead ends: 4261 [2021-11-20 07:00:33,484 INFO L226 Difference]: Without dead ends: 3578 [2021-11-20 07:00:33,488 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 [2021-11-20 07:00:33,489 INFO L933 BasicCegarLoop]: 4889 mSDtfsCounter, 5411 mSDsluCounter, 17640 mSDsCounter, 0 mSdLazyCounter, 2829 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 22529 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:33,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5429 Valid, 22529 Invalid, 2902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2829 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-20 07:00:33,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2021-11-20 07:00:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3148. [2021-11-20 07:00:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7765436131983012) internal successors, (5438), 3065 states have internal predecessors, (5438), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2021-11-20 07:00:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5573 transitions. [2021-11-20 07:00:33,643 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5573 transitions. Word has length 167 [2021-11-20 07:00:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:33,643 INFO L470 AbstractCegarLoop]: Abstraction has 3148 states and 5573 transitions. [2021-11-20 07:00:33,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:33,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5573 transitions. [2021-11-20 07:00:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:33,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:33,647 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] [2021-11-20 07:00:33,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:00:33,648 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2021-11-20 07:00:33,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:33,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261774672] [2021-11-20 07:00:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:33,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:33,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261774672] [2021-11-20 07:00:33,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261774672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:33,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:33,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:33,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931038071] [2021-11-20 07:00:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:33,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:33,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:33,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:33,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:33,811 INFO L87 Difference]: Start difference. First operand 3148 states and 5573 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:37,396 INFO L93 Difference]: Finished difference Result 5508 states and 9375 transitions. [2021-11-20 07:00:37,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:00:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:37,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:37,426 INFO L225 Difference]: With dead ends: 5508 [2021-11-20 07:00:37,426 INFO L226 Difference]: Without dead ends: 4500 [2021-11-20 07:00:37,432 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 [2021-11-20 07:00:37,433 INFO L933 BasicCegarLoop]: 4881 mSDtfsCounter, 5408 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22517 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:37,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5426 Valid, 22517 Invalid, 2903 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 07:00:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4500 states. [2021-11-20 07:00:37,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4500 to 3800. [2021-11-20 07:00:37,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3659 states have (on average 1.7406395189942607) internal successors, (6369), 3665 states have internal predecessors, (6369), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2021-11-20 07:00:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 6592 transitions. [2021-11-20 07:00:37,637 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 6592 transitions. Word has length 167 [2021-11-20 07:00:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:37,637 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 6592 transitions. [2021-11-20 07:00:37,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 6592 transitions. [2021-11-20 07:00:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:37,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:37,642 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] [2021-11-20 07:00:37,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:00:37,642 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:37,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:37,643 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2021-11-20 07:00:37,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:37,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476563415] [2021-11-20 07:00:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:37,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:37,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:37,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:37,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476563415] [2021-11-20 07:00:37,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476563415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:37,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:37,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:37,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333264124] [2021-11-20 07:00:37,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:37,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:37,826 INFO L87 Difference]: Start difference. First operand 3800 states and 6592 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:41,512 INFO L93 Difference]: Finished difference Result 7910 states and 13178 transitions. [2021-11-20 07:00:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:00:41,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:41,551 INFO L225 Difference]: With dead ends: 7910 [2021-11-20 07:00:41,551 INFO L226 Difference]: Without dead ends: 6250 [2021-11-20 07:00:41,559 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 [2021-11-20 07:00:41,561 INFO L933 BasicCegarLoop]: 4877 mSDtfsCounter, 5404 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2822 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 22513 SdHoareTripleChecker+Invalid, 2898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:41,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5422 Valid, 22513 Invalid, 2898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2822 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 07:00:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6250 states. [2021-11-20 07:00:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6250 to 5106. [2021-11-20 07:00:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6950792670372659) internal successors, (8233), 4867 states have internal predecessors, (8233), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-11-20 07:00:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8638 transitions. [2021-11-20 07:00:41,870 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8638 transitions. Word has length 167 [2021-11-20 07:00:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:41,871 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8638 transitions. [2021-11-20 07:00:41,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:41,872 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8638 transitions. [2021-11-20 07:00:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:41,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:41,877 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] [2021-11-20 07:00:41,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:00:41,877 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:41,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:41,878 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2021-11-20 07:00:41,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:41,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469387483] [2021-11-20 07:00:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:41,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:42,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:42,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469387483] [2021-11-20 07:00:42,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469387483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:42,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:42,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:42,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409822583] [2021-11-20 07:00:42,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:42,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:42,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:42,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:42,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:42,069 INFO L87 Difference]: Start difference. First operand 5106 states and 8638 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:44,118 INFO L93 Difference]: Finished difference Result 9244 states and 15305 transitions. [2021-11-20 07:00:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:44,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:44,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:44,148 INFO L225 Difference]: With dead ends: 9244 [2021-11-20 07:00:44,149 INFO L226 Difference]: Without dead ends: 6278 [2021-11-20 07:00:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:00:44,163 INFO L933 BasicCegarLoop]: 4546 mSDtfsCounter, 5150 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 17107 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:44,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 17107 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:00:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-11-20 07:00:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 5106. [2021-11-20 07:00:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.6932262713609223) internal successors, (8224), 4867 states have internal predecessors, (8224), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-11-20 07:00:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8629 transitions. [2021-11-20 07:00:44,624 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8629 transitions. Word has length 167 [2021-11-20 07:00:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:44,625 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8629 transitions. [2021-11-20 07:00:44,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8629 transitions. [2021-11-20 07:00:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:44,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:44,631 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] [2021-11-20 07:00:44,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:00:44,631 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:44,632 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2021-11-20 07:00:44,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:44,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508752341] [2021-11-20 07:00:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:44,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:44,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:44,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508752341] [2021-11-20 07:00:44,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508752341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:44,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:44,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:44,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117993238] [2021-11-20 07:00:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:44,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:44,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:44,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:44,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:44,825 INFO L87 Difference]: Start difference. First operand 5106 states and 8629 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:46,721 INFO L93 Difference]: Finished difference Result 9224 states and 15239 transitions. [2021-11-20 07:00:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:00:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:46,760 INFO L225 Difference]: With dead ends: 9224 [2021-11-20 07:00:46,760 INFO L226 Difference]: Without dead ends: 6258 [2021-11-20 07:00:46,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:00:46,774 INFO L933 BasicCegarLoop]: 4540 mSDtfsCounter, 5146 mSDsluCounter, 12561 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5165 SdHoareTripleChecker+Valid, 17101 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:46,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5165 Valid, 17101 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:00:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-11-20 07:00:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 5106. [2021-11-20 07:00:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 4857 states have (on average 1.691373275684579) internal successors, (8215), 4867 states have internal predecessors, (8215), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2021-11-20 07:00:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8620 transitions. [2021-11-20 07:00:47,183 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8620 transitions. Word has length 167 [2021-11-20 07:00:47,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:47,185 INFO L470 AbstractCegarLoop]: Abstraction has 5106 states and 8620 transitions. [2021-11-20 07:00:47,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8620 transitions. [2021-11-20 07:00:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:47,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:47,190 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] [2021-11-20 07:00:47,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:00:47,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2021-11-20 07:00:47,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830682190] [2021-11-20 07:00:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:47,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:47,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830682190] [2021-11-20 07:00:47,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830682190] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:47,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:47,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:47,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275283165] [2021-11-20 07:00:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:47,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:47,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:47,381 INFO L87 Difference]: Start difference. First operand 5106 states and 8620 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:50,924 INFO L93 Difference]: Finished difference Result 12684 states and 20658 transitions. [2021-11-20 07:00:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:00:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:50,962 INFO L225 Difference]: With dead ends: 12684 [2021-11-20 07:00:50,963 INFO L226 Difference]: Without dead ends: 9718 [2021-11-20 07:00:50,975 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 [2021-11-20 07:00:50,976 INFO L933 BasicCegarLoop]: 4855 mSDtfsCounter, 5387 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5405 SdHoareTripleChecker+Valid, 22491 SdHoareTripleChecker+Invalid, 2842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:50,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5405 Valid, 22491 Invalid, 2842 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 07:00:50,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9718 states. [2021-11-20 07:00:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9718 to 7750. [2021-11-20 07:00:51,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7750 states, 7285 states have (on average 1.6433768016472203) internal successors, (11972), 7303 states have internal predecessors, (11972), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2021-11-20 07:00:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7750 states to 7750 states and 12759 transitions. [2021-11-20 07:00:51,490 INFO L78 Accepts]: Start accepts. Automaton has 7750 states and 12759 transitions. Word has length 167 [2021-11-20 07:00:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 7750 states and 12759 transitions. [2021-11-20 07:00:51,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7750 states and 12759 transitions. [2021-11-20 07:00:51,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:51,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:51,498 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] [2021-11-20 07:00:51,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:00:51,498 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2021-11-20 07:00:51,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554686843] [2021-11-20 07:00:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:51,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:51,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:51,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554686843] [2021-11-20 07:00:51,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554686843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:51,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:51,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:51,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176005531] [2021-11-20 07:00:51,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:51,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:51,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:51,651 INFO L87 Difference]: Start difference. First operand 7750 states and 12759 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:00:56,010 INFO L93 Difference]: Finished difference Result 22294 states and 35877 transitions. [2021-11-20 07:00:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:00:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:00:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:00:56,081 INFO L225 Difference]: With dead ends: 22294 [2021-11-20 07:00:56,081 INFO L226 Difference]: Without dead ends: 16684 [2021-11-20 07:00:56,106 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 [2021-11-20 07:00:56,107 INFO L933 BasicCegarLoop]: 4850 mSDtfsCounter, 5386 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2754 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 22486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:00:56,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 22486 Invalid, 2834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2754 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 07:00:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16684 states. [2021-11-20 07:00:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16684 to 13047. [2021-11-20 07:00:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13047 states, 12150 states have (on average 1.6046090534979425) internal successors, (19496), 12184 states have internal predecessors, (19496), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2021-11-20 07:00:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13047 states to 13047 states and 21101 transitions. [2021-11-20 07:00:57,203 INFO L78 Accepts]: Start accepts. Automaton has 13047 states and 21101 transitions. Word has length 167 [2021-11-20 07:00:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:00:57,204 INFO L470 AbstractCegarLoop]: Abstraction has 13047 states and 21101 transitions. [2021-11-20 07:00:57,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:00:57,204 INFO L276 IsEmpty]: Start isEmpty. Operand 13047 states and 21101 transitions. [2021-11-20 07:00:57,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:00:57,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:00:57,215 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] [2021-11-20 07:00:57,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:00:57,215 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:00:57,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:57,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2021-11-20 07:00:57,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:57,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331515037] [2021-11-20 07:00:57,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:57,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:00:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:00:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:00:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:00:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:00:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:57,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:57,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331515037] [2021-11-20 07:00:57,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331515037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:57,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:57,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:00:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913462702] [2021-11-20 07:00:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:57,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:00:57,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:57,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:00:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:00:57,375 INFO L87 Difference]: Start difference. First operand 13047 states and 21101 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:02,730 INFO L93 Difference]: Finished difference Result 41509 states and 66497 transitions. [2021-11-20 07:01:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:01:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:01:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:02,850 INFO L225 Difference]: With dead ends: 41509 [2021-11-20 07:01:02,850 INFO L226 Difference]: Without dead ends: 30602 [2021-11-20 07:01:02,889 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 [2021-11-20 07:01:02,890 INFO L933 BasicCegarLoop]: 4845 mSDtfsCounter, 5385 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5403 SdHoareTripleChecker+Valid, 22481 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:02,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5403 Valid, 22481 Invalid, 2826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-20 07:01:02,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30602 states. [2021-11-20 07:01:04,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30602 to 23672. [2021-11-20 07:01:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23672 states, 21911 states have (on average 1.5786591209894574) internal successors, (34590), 21977 states have internal predecessors, (34590), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2021-11-20 07:01:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23672 states to 23672 states and 37993 transitions. [2021-11-20 07:01:05,298 INFO L78 Accepts]: Start accepts. Automaton has 23672 states and 37993 transitions. Word has length 167 [2021-11-20 07:01:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:05,300 INFO L470 AbstractCegarLoop]: Abstraction has 23672 states and 37993 transitions. [2021-11-20 07:01:05,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 23672 states and 37993 transitions. [2021-11-20 07:01:05,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:01:05,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:05,319 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] [2021-11-20 07:01:05,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:01:05,320 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:01:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2021-11-20 07:01:05,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:05,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630533958] [2021-11-20 07:01:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:05,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:01:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:01:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:01:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:01:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:01:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:05,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630533958] [2021-11-20 07:01:05,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630533958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:05,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:05,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:01:05,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861054367] [2021-11-20 07:01:05,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:05,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:05,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:05,536 INFO L87 Difference]: Start difference. First operand 23672 states and 37993 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:12,950 INFO L93 Difference]: Finished difference Result 79940 states and 128339 transitions. [2021-11-20 07:01:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:01:12,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:01:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:13,191 INFO L225 Difference]: With dead ends: 79940 [2021-11-20 07:01:13,192 INFO L226 Difference]: Without dead ends: 58408 [2021-11-20 07:01:13,254 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 [2021-11-20 07:01:13,256 INFO L933 BasicCegarLoop]: 4840 mSDtfsCounter, 5384 mSDsluCounter, 17636 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5402 SdHoareTripleChecker+Valid, 22476 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:13,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5402 Valid, 22476 Invalid, 2818 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2738 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-20 07:01:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58408 states. [2021-11-20 07:01:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58408 to 44985. [2021-11-20 07:01:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44985 states, 41496 states have (on average 1.5633314054366685) internal successors, (64872), 41626 states have internal predecessors, (64872), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2021-11-20 07:01:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44985 states to 44985 states and 72357 transitions. [2021-11-20 07:01:17,239 INFO L78 Accepts]: Start accepts. Automaton has 44985 states and 72357 transitions. Word has length 167 [2021-11-20 07:01:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:17,239 INFO L470 AbstractCegarLoop]: Abstraction has 44985 states and 72357 transitions. [2021-11-20 07:01:17,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44985 states and 72357 transitions. [2021-11-20 07:01:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:01:17,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:17,275 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] [2021-11-20 07:01:17,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:01:17,276 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:01:17,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:17,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2021-11-20 07:01:17,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:17,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806726072] [2021-11-20 07:01:17,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:17,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:01:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:01:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:01:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:01:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:01:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:17,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:17,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806726072] [2021-11-20 07:01:17,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806726072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:17,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:17,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:01:17,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347636482] [2021-11-20 07:01:17,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:17,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:17,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:17,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:17,461 INFO L87 Difference]: Start difference. First operand 44985 states and 72357 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:01:33,866 INFO L93 Difference]: Finished difference Result 177667 states and 285875 transitions. [2021-11-20 07:01:33,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:01:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2021-11-20 07:01:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:01:34,465 INFO L225 Difference]: With dead ends: 177667 [2021-11-20 07:01:34,465 INFO L226 Difference]: Without dead ends: 134822 [2021-11-20 07:01:34,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:01:34,745 INFO L933 BasicCegarLoop]: 4833 mSDtfsCounter, 5830 mSDsluCounter, 17628 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5860 SdHoareTripleChecker+Valid, 22461 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:01:34,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5860 Valid, 22461 Invalid, 2808 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 07:01:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134822 states. [2021-11-20 07:01:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134822 to 87354. [2021-11-20 07:01:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87354 states, 80537 states have (on average 1.556675813601202) internal successors, (125370), 80795 states have internal predecessors, (125370), 5017 states have call successors, (5017), 1542 states have call predecessors, (5017), 1798 states have return successors, (11834), 5272 states have call predecessors, (11834), 5017 states have call successors, (11834) [2021-11-20 07:01:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87354 states to 87354 states and 142221 transitions. [2021-11-20 07:01:43,188 INFO L78 Accepts]: Start accepts. Automaton has 87354 states and 142221 transitions. Word has length 167 [2021-11-20 07:01:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:01:43,189 INFO L470 AbstractCegarLoop]: Abstraction has 87354 states and 142221 transitions. [2021-11-20 07:01:43,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2021-11-20 07:01:43,189 INFO L276 IsEmpty]: Start isEmpty. Operand 87354 states and 142221 transitions. [2021-11-20 07:01:43,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-20 07:01:43,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:01:43,255 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] [2021-11-20 07:01:43,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:01:43,256 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:01:43,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:43,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1936631212, now seen corresponding path program 1 times [2021-11-20 07:01:43,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:43,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554570941] [2021-11-20 07:01:43,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:43,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:01:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 07:01:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:01:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 07:01:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-20 07:01:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:43,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554570941] [2021-11-20 07:01:43,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554570941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:43,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:43,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:01:43,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125481007] [2021-11-20 07:01:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:43,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:01:43,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:01:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:01:43,406 INFO L87 Difference]: Start difference. First operand 87354 states and 142221 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)