./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa --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 6168447ca09b86da2cc4f25a50a94286b8e0ec7cdf3a295188037c59149a5efb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:01:28,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:01:28,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:01:28,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:01:28,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:01:28,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:01:28,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:01:28,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:01:28,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:01:28,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:01:28,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:01:28,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:01:28,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:01:28,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:01:28,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:01:28,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:01:28,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:01:28,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:01:28,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:01:28,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:01:28,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:01:28,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:01:28,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:01:28,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:01:28,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:01:28,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:01:28,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:01:28,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:01:28,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:01:28,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:01:28,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:01:28,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:01:28,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:01:28,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:01:28,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:01:28,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:01:28,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:01:28,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:01:28,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:01:28,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:01:28,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:01:28,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:01:28,688 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:01:28,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:01:28,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:01:28,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:01:28,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:01:28,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:01:28,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:01:28,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:01:28,690 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:01:28,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:01:28,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:01:28,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:01:28,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:01:28,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:01:28,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:28,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:01:28,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:01:28,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:01:28,693 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:01:28,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:01:28,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:01:28,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:01:28,693 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_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6168447ca09b86da2cc4f25a50a94286b8e0ec7cdf3a295188037c59149a5efb [2021-12-07 01:01:28,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:01:28,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:01:28,910 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:01:28,910 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:01:28,911 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:01:28,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c [2021-12-07 01:01:28,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/data/bb63b354d/571df1642cfc420bb4949f038a225e07/FLAG95ae1b0f0 [2021-12-07 01:01:29,664 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:01:29,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c [2021-12-07 01:01:29,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/data/bb63b354d/571df1642cfc420bb4949f038a225e07/FLAG95ae1b0f0 [2021-12-07 01:01:30,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/data/bb63b354d/571df1642cfc420bb4949f038a225e07 [2021-12-07 01:01:30,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:01:30,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:01:30,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:30,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:01:30,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:01:30,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:30" (1/1) ... [2021-12-07 01:01:30,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab71936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:30, skipping insertion in model container [2021-12-07 01:01:30,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:01:30" (1/1) ... [2021-12-07 01:01:30,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:01:30,277 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:01:31,630 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_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[377069,377082] [2021-12-07 01:01:31,654 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_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[383339,383352] [2021-12-07 01:01:31,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:31,840 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:01:32,627 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_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[377069,377082] [2021-12-07 01:01:32,634 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_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/sv-benchmarks/c/combinations/Problem05_label40+token_ring.06.cil-2.c[383339,383352] [2021-12-07 01:01:32,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:01:32,700 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:01:32,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32 WrapperNode [2021-12-07 01:01:32,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:01:32,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:32,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:01:32,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:01:32,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:32,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,051 INFO L137 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12851 [2021-12-07 01:01:33,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:01:33,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:01:33,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:01:33,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:01:33,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:01:33,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:01:33,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:01:33,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:01:33,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (1/1) ... [2021-12-07 01:01:33,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:01:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:01:33,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:01:33,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:01:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:01:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-07 01:01:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-07 01:01:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-07 01:01:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-07 01:01:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-07 01:01:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-07 01:01:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-07 01:01:33,418 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:01:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:01:33,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:01:33,496 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:01:33,497 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:01:37,769 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:01:37,796 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:01:37,796 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-07 01:01:37,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:37 BoogieIcfgContainer [2021-12-07 01:01:37,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:01:37,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:01:37,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:01:37,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:01:37,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:01:30" (1/3) ... [2021-12-07 01:01:37,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e4b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:37, skipping insertion in model container [2021-12-07 01:01:37,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:01:32" (2/3) ... [2021-12-07 01:01:37,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e4b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:01:37, skipping insertion in model container [2021-12-07 01:01:37,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:01:37" (3/3) ... [2021-12-07 01:01:37,807 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.06.cil-2.c [2021-12-07 01:01:37,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:01:37,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-07 01:01:37,861 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:01:37,867 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:01:37,867 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-07 01:01:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 01:01:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:37,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:37,934 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] [2021-12-07 01:01:37,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2021-12-07 01:01:37,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:37,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622870085] [2021-12-07 01:01:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:37,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:38,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:38,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622870085] [2021-12-07 01:01:38,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622870085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:38,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:38,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:01:38,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191904125] [2021-12-07 01:01:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:38,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:01:38,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:38,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:01:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:01:38,249 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:39,012 INFO L93 Difference]: Finished difference Result 4896 states and 9026 transitions. [2021-12-07 01:01:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:01:39,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:39,038 INFO L225 Difference]: With dead ends: 4896 [2021-12-07 01:01:39,038 INFO L226 Difference]: Without dead ends: 2424 [2021-12-07 01:01:39,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:01:39,049 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 582 mSDsluCounter, 12323 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 16728 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:39,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 16728 Invalid, 440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:01:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-07 01:01:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2348. [2021-12-07 01:01:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 01:01:39,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2021-12-07 01:01:39,165 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2021-12-07 01:01:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:39,165 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2021-12-07 01:01:39,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2021-12-07 01:01:39,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:39,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:39,169 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] [2021-12-07 01:01:39,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:01:39,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2021-12-07 01:01:39,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:39,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550246087] [2021-12-07 01:01:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:39,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:39,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550246087] [2021-12-07 01:01:39,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550246087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:39,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:39,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:39,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167164372] [2021-12-07 01:01:39,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:39,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:39,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:39,341 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:40,164 INFO L93 Difference]: Finished difference Result 2651 states and 4792 transitions. [2021-12-07 01:01:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:01:40,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:40,182 INFO L225 Difference]: With dead ends: 2651 [2021-12-07 01:01:40,182 INFO L226 Difference]: Without dead ends: 2438 [2021-12-07 01:01:40,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:01:40,185 INFO L933 BasicCegarLoop]: 4325 mSDtfsCounter, 4580 mSDsluCounter, 16381 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20706 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:40,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20706 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 01:01:40,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-12-07 01:01:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2348. [2021-12-07 01:01:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8383620689655173) internal successors, (4265), 2322 states have internal predecessors, (4265), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-07 01:01:40,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4305 transitions. [2021-12-07 01:01:40,248 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4305 transitions. Word has length 112 [2021-12-07 01:01:40,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:40,248 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4305 transitions. [2021-12-07 01:01:40,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:40,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4305 transitions. [2021-12-07 01:01:40,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:40,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:40,250 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] [2021-12-07 01:01:40,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:01:40,251 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:40,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1572107553, now seen corresponding path program 1 times [2021-12-07 01:01:40,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:40,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63997632] [2021-12-07 01:01:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:40,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:40,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:40,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63997632] [2021-12-07 01:01:40,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63997632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:40,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:40,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:40,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898983893] [2021-12-07 01:01:40,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:40,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:40,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:40,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:40,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:40,384 INFO L87 Difference]: Start difference. First operand 2348 states and 4305 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:41,693 INFO L93 Difference]: Finished difference Result 2943 states and 5254 transitions. [2021-12-07 01:01:41,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:01:41,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:41,710 INFO L225 Difference]: With dead ends: 2943 [2021-12-07 01:01:41,710 INFO L226 Difference]: Without dead ends: 2730 [2021-12-07 01:01:41,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:01:41,713 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 4793 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4806 SdHoareTripleChecker+Valid, 21495 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:41,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4806 Valid, 21495 Invalid, 1785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:01:41,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2021-12-07 01:01:41,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2571. [2021-12-07 01:01:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2518 states have (on average 1.8165210484511518) internal successors, (4574), 2522 states have internal predecessors, (4574), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2021-12-07 01:01:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 4655 transitions. [2021-12-07 01:01:41,786 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 4655 transitions. Word has length 112 [2021-12-07 01:01:41,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:41,787 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 4655 transitions. [2021-12-07 01:01:41,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 4655 transitions. [2021-12-07 01:01:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:41,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:41,789 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] [2021-12-07 01:01:41,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:01:41,789 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash 688598563, now seen corresponding path program 1 times [2021-12-07 01:01:41,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675630594] [2021-12-07 01:01:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:41,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:41,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:41,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:41,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675630594] [2021-12-07 01:01:41,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675630594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:41,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:41,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:41,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004741694] [2021-12-07 01:01:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:41,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:41,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:41,886 INFO L87 Difference]: Start difference. First operand 2571 states and 4655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:43,125 INFO L93 Difference]: Finished difference Result 3701 states and 6440 transitions. [2021-12-07 01:01:43,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:01:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:43,141 INFO L225 Difference]: With dead ends: 3701 [2021-12-07 01:01:43,141 INFO L226 Difference]: Without dead ends: 3267 [2021-12-07 01:01:43,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:01:43,145 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21522 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:43,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21522 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:01:43,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-12-07 01:01:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2982. [2021-12-07 01:01:43,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2885 states have (on average 1.7805892547660311) internal successors, (5137), 2891 states have internal predecessors, (5137), 67 states have call successors, (67), 24 states have call predecessors, (67), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2021-12-07 01:01:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5288 transitions. [2021-12-07 01:01:43,226 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5288 transitions. Word has length 112 [2021-12-07 01:01:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:43,226 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 5288 transitions. [2021-12-07 01:01:43,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5288 transitions. [2021-12-07 01:01:43,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:43,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:43,228 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] [2021-12-07 01:01:43,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:01:43,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash 660098273, now seen corresponding path program 1 times [2021-12-07 01:01:43,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:43,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718074252] [2021-12-07 01:01:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:43,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:43,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:43,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718074252] [2021-12-07 01:01:43,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718074252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:43,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:43,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:43,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871387272] [2021-12-07 01:01:43,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:43,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:43,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:43,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:43,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:43,320 INFO L87 Difference]: Start difference. First operand 2982 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:44,486 INFO L93 Difference]: Finished difference Result 5184 states and 8757 transitions. [2021-12-07 01:01:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 01:01:44,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:44,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:44,506 INFO L225 Difference]: With dead ends: 5184 [2021-12-07 01:01:44,506 INFO L226 Difference]: Without dead ends: 4339 [2021-12-07 01:01:44,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-07 01:01:44,510 INFO L933 BasicCegarLoop]: 4524 mSDtfsCounter, 4771 mSDsluCounter, 16994 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 21518 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:44,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 21518 Invalid, 1850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 01:01:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2021-12-07 01:01:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 3807. [2021-12-07 01:01:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7302595251242407) internal successors, (6267), 3632 states have internal predecessors, (6267), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-07 01:01:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6564 transitions. [2021-12-07 01:01:44,618 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6564 transitions. Word has length 112 [2021-12-07 01:01:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:44,619 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6564 transitions. [2021-12-07 01:01:44,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:44,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6564 transitions. [2021-12-07 01:01:44,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:44,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:44,621 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] [2021-12-07 01:01:44,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:01:44,621 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:44,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1280483741, now seen corresponding path program 1 times [2021-12-07 01:01:44,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:44,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446882720] [2021-12-07 01:01:44,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:44,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:44,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:44,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:44,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446882720] [2021-12-07 01:01:44,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446882720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:44,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:44,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:44,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567851787] [2021-12-07 01:01:44,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:44,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:44,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:44,705 INFO L87 Difference]: Start difference. First operand 3807 states and 6564 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:45,364 INFO L93 Difference]: Finished difference Result 6031 states and 10100 transitions. [2021-12-07 01:01:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:01:45,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:45,382 INFO L225 Difference]: With dead ends: 6031 [2021-12-07 01:01:45,382 INFO L226 Difference]: Without dead ends: 4359 [2021-12-07 01:01:45,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:01:45,388 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4581 mSDsluCounter, 16380 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4595 SdHoareTripleChecker+Valid, 20691 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:45,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4595 Valid, 20691 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:01:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4359 states. [2021-12-07 01:01:45,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4359 to 3807. [2021-12-07 01:01:45,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7277747101049143) internal successors, (6258), 3632 states have internal predecessors, (6258), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-07 01:01:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6555 transitions. [2021-12-07 01:01:45,528 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6555 transitions. Word has length 112 [2021-12-07 01:01:45,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:45,529 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6555 transitions. [2021-12-07 01:01:45,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:45,529 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6555 transitions. [2021-12-07 01:01:45,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:45,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:45,532 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] [2021-12-07 01:01:45,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:01:45,532 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:45,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:45,532 INFO L85 PathProgramCache]: Analyzing trace with hash 596579489, now seen corresponding path program 1 times [2021-12-07 01:01:45,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:45,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637966821] [2021-12-07 01:01:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:45,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637966821] [2021-12-07 01:01:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637966821] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:45,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:45,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:45,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418140122] [2021-12-07 01:01:45,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:45,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:45,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:45,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:45,615 INFO L87 Difference]: Start difference. First operand 3807 states and 6555 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:46,313 INFO L93 Difference]: Finished difference Result 6022 states and 10057 transitions. [2021-12-07 01:01:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:01:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:46,333 INFO L225 Difference]: With dead ends: 6022 [2021-12-07 01:01:46,333 INFO L226 Difference]: Without dead ends: 4350 [2021-12-07 01:01:46,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:01:46,339 INFO L933 BasicCegarLoop]: 4307 mSDtfsCounter, 4672 mSDsluCounter, 12306 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 16613 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:46,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4686 Valid, 16613 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:01:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4350 states. [2021-12-07 01:01:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4350 to 3807. [2021-12-07 01:01:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3622 states have (on average 1.7252898950855882) internal successors, (6249), 3632 states have internal predecessors, (6249), 127 states have call successors, (127), 48 states have call predecessors, (127), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2021-12-07 01:01:46,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 6546 transitions. [2021-12-07 01:01:46,459 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 6546 transitions. Word has length 112 [2021-12-07 01:01:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:46,459 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 6546 transitions. [2021-12-07 01:01:46,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:46,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 6546 transitions. [2021-12-07 01:01:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:46,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:46,462 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] [2021-12-07 01:01:46,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:01:46,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash -174154077, now seen corresponding path program 1 times [2021-12-07 01:01:46,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035031561] [2021-12-07 01:01:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:46,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:46,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:46,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035031561] [2021-12-07 01:01:46,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035031561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:46,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:46,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:46,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166205113] [2021-12-07 01:01:46,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:46,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:46,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:46,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:46,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:46,538 INFO L87 Difference]: Start difference. First operand 3807 states and 6546 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:47,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:47,894 INFO L93 Difference]: Finished difference Result 8873 states and 14409 transitions. [2021-12-07 01:01:47,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:01:47,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:47,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:47,923 INFO L225 Difference]: With dead ends: 8873 [2021-12-07 01:01:47,923 INFO L226 Difference]: Without dead ends: 7203 [2021-12-07 01:01:47,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:01:47,930 INFO L933 BasicCegarLoop]: 4505 mSDtfsCounter, 5020 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 21491 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:47,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 21491 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 01:01:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7203 states. [2021-12-07 01:01:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7203 to 5454. [2021-12-07 01:01:48,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5101 states have (on average 1.666535973338561) internal successors, (8501), 5119 states have internal predecessors, (8501), 239 states have call successors, (239), 96 states have call predecessors, (239), 112 states have return successors, (352), 254 states have call predecessors, (352), 239 states have call successors, (352) [2021-12-07 01:01:48,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 9092 transitions. [2021-12-07 01:01:48,118 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 9092 transitions. Word has length 112 [2021-12-07 01:01:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:48,118 INFO L470 AbstractCegarLoop]: Abstraction has 5454 states and 9092 transitions. [2021-12-07 01:01:48,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 9092 transitions. [2021-12-07 01:01:48,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:48,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:48,122 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] [2021-12-07 01:01:48,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:01:48,122 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1168847775, now seen corresponding path program 1 times [2021-12-07 01:01:48,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:48,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276519672] [2021-12-07 01:01:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:48,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:48,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276519672] [2021-12-07 01:01:48,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276519672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:48,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:48,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:48,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176492631] [2021-12-07 01:01:48,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:48,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:48,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:48,208 INFO L87 Difference]: Start difference. First operand 5454 states and 9092 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:49,760 INFO L93 Difference]: Finished difference Result 15054 states and 24055 transitions. [2021-12-07 01:01:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:01:49,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:49,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:49,785 INFO L225 Difference]: With dead ends: 15054 [2021-12-07 01:01:49,785 INFO L226 Difference]: Without dead ends: 11737 [2021-12-07 01:01:49,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:01:49,794 INFO L933 BasicCegarLoop]: 4497 mSDtfsCounter, 4954 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4974 SdHoareTripleChecker+Valid, 21483 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:49,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4974 Valid, 21483 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 01:01:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-12-07 01:01:50,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8755. [2021-12-07 01:01:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8074 states have (on average 1.6154322516720336) internal successors, (13043), 8108 states have internal predecessors, (13043), 455 states have call successors, (455), 192 states have call predecessors, (455), 224 states have return successors, (762), 486 states have call predecessors, (762), 455 states have call successors, (762) [2021-12-07 01:01:50,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 14260 transitions. [2021-12-07 01:01:50,119 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 14260 transitions. Word has length 112 [2021-12-07 01:01:50,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:50,120 INFO L470 AbstractCegarLoop]: Abstraction has 8755 states and 14260 transitions. [2021-12-07 01:01:50,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 14260 transitions. [2021-12-07 01:01:50,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:50,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:50,125 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] [2021-12-07 01:01:50,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:01:50,125 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1167544735, now seen corresponding path program 1 times [2021-12-07 01:01:50,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:50,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393113554] [2021-12-07 01:01:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:50,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:50,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:50,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393113554] [2021-12-07 01:01:50,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393113554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:50,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:50,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:50,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251457076] [2021-12-07 01:01:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:50,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:50,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:50,199 INFO L87 Difference]: Start difference. First operand 8755 states and 14260 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:52,298 INFO L93 Difference]: Finished difference Result 27325 states and 43401 transitions. [2021-12-07 01:01:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:01:52,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:52,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:52,353 INFO L225 Difference]: With dead ends: 27325 [2021-12-07 01:01:52,353 INFO L226 Difference]: Without dead ends: 20707 [2021-12-07 01:01:52,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:01:52,374 INFO L933 BasicCegarLoop]: 4474 mSDtfsCounter, 4927 mSDsluCounter, 16957 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:52,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4947 Valid, 21431 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1627 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:01:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20707 states. [2021-12-07 01:01:52,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20707 to 15341. [2021-12-07 01:01:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 14020 states have (on average 1.5793865905848787) internal successors, (22143), 14086 states have internal predecessors, (22143), 871 states have call successors, (871), 384 states have call predecessors, (871), 448 states have return successors, (1728), 934 states have call predecessors, (1728), 871 states have call successors, (1728) [2021-12-07 01:01:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 24742 transitions. [2021-12-07 01:01:53,024 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 24742 transitions. Word has length 112 [2021-12-07 01:01:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:53,024 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 24742 transitions. [2021-12-07 01:01:53,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 24742 transitions. [2021-12-07 01:01:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:53,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:53,031 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] [2021-12-07 01:01:53,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:01:53,032 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1250939743, now seen corresponding path program 1 times [2021-12-07 01:01:53,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301950526] [2021-12-07 01:01:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:53,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:53,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:53,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301950526] [2021-12-07 01:01:53,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301950526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:53,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:53,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:53,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786746077] [2021-12-07 01:01:53,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:53,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:53,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:53,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:53,111 INFO L87 Difference]: Start difference. First operand 15341 states and 24742 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:56,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:56,042 INFO L93 Difference]: Finished difference Result 51275 states and 81797 transitions. [2021-12-07 01:01:56,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:01:56,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:56,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:56,126 INFO L225 Difference]: With dead ends: 51275 [2021-12-07 01:01:56,126 INFO L226 Difference]: Without dead ends: 38071 [2021-12-07 01:01:56,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:01:56,160 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4805 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1828 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4817 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:01:56,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4817 Valid, 21517 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 01:01:56,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38071 states. [2021-12-07 01:01:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38071 to 28481. [2021-12-07 01:01:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5581583822167335) internal successors, (40375), 26042 states have internal predecessors, (40375), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-07 01:01:57,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46160 transitions. [2021-12-07 01:01:57,582 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46160 transitions. Word has length 112 [2021-12-07 01:01:57,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:01:57,582 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46160 transitions. [2021-12-07 01:01:57,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46160 transitions. [2021-12-07 01:01:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:01:57,594 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:01:57,595 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] [2021-12-07 01:01:57,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:01:57,595 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:01:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:01:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1164896607, now seen corresponding path program 1 times [2021-12-07 01:01:57,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:01:57,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983187585] [2021-12-07 01:01:57,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:01:57,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:01:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:01:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:01:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:01:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:01:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:01:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:01:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:01:57,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:01:57,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983187585] [2021-12-07 01:01:57,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983187585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:01:57,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:01:57,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:01:57,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574182230] [2021-12-07 01:01:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:01:57,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:01:57,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:01:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:01:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:01:57,667 INFO L87 Difference]: Start difference. First operand 28481 states and 46160 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:01:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:01:59,899 INFO L93 Difference]: Finished difference Result 61777 states and 101218 transitions. [2021-12-07 01:01:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:01:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:01:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:01:59,980 INFO L225 Difference]: With dead ends: 61777 [2021-12-07 01:01:59,980 INFO L226 Difference]: Without dead ends: 35431 [2021-12-07 01:02:00,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 01:02:00,024 INFO L933 BasicCegarLoop]: 4287 mSDtfsCounter, 4580 mSDsluCounter, 16378 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 20665 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:00,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4594 Valid, 20665 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-07 01:02:00,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35431 states. [2021-12-07 01:02:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35431 to 28481. [2021-12-07 01:02:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28481 states, 25912 states have (on average 1.5531799938252546) internal successors, (40246), 26042 states have internal predecessors, (40246), 1671 states have call successors, (1671), 768 states have call predecessors, (1671), 896 states have return successors, (4114), 1798 states have call predecessors, (4114), 1671 states have call successors, (4114) [2021-12-07 01:02:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28481 states to 28481 states and 46031 transitions. [2021-12-07 01:02:01,397 INFO L78 Accepts]: Start accepts. Automaton has 28481 states and 46031 transitions. Word has length 112 [2021-12-07 01:02:01,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:01,397 INFO L470 AbstractCegarLoop]: Abstraction has 28481 states and 46031 transitions. [2021-12-07 01:02:01,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:02:01,397 INFO L276 IsEmpty]: Start isEmpty. Operand 28481 states and 46031 transitions. [2021-12-07 01:02:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:02:01,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:01,409 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] [2021-12-07 01:02:01,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:02:01,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1805214495, now seen corresponding path program 1 times [2021-12-07 01:02:01,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:01,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014480188] [2021-12-07 01:02:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:01,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:02:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:02:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:02:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:02:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:02:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:01,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:01,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014480188] [2021-12-07 01:02:01,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014480188] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:01,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:01,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:02:01,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61254094] [2021-12-07 01:02:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:01,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:02:01,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:02:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:02:01,475 INFO L87 Difference]: Start difference. First operand 28481 states and 46031 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:02:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:06,179 INFO L93 Difference]: Finished difference Result 96071 states and 155187 transitions. [2021-12-07 01:02:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 01:02:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2021-12-07 01:02:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:06,363 INFO L225 Difference]: With dead ends: 96071 [2021-12-07 01:02:06,363 INFO L226 Difference]: Without dead ends: 69727 [2021-12-07 01:02:06,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 01:02:06,420 INFO L933 BasicCegarLoop]: 4489 mSDtfsCounter, 4782 mSDsluCounter, 16986 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4794 SdHoareTripleChecker+Valid, 21475 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:06,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4794 Valid, 21475 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 01:02:06,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69727 states. [2021-12-07 01:02:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69727 to 54825. [2021-12-07 01:02:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54825 states, 49824 states have (on average 1.5409039820166988) internal successors, (76774), 50082 states have internal predecessors, (76774), 3207 states have call successors, (3207), 1536 states have call predecessors, (3207), 1792 states have return successors, (10280), 3462 states have call predecessors, (10280), 3207 states have call successors, (10280) [2021-12-07 01:02:09,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54825 states to 54825 states and 90261 transitions. [2021-12-07 01:02:09,402 INFO L78 Accepts]: Start accepts. Automaton has 54825 states and 90261 transitions. Word has length 112 [2021-12-07 01:02:09,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:09,402 INFO L470 AbstractCegarLoop]: Abstraction has 54825 states and 90261 transitions. [2021-12-07 01:02:09,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:02:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 54825 states and 90261 transitions. [2021-12-07 01:02:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 01:02:09,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:09,426 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] [2021-12-07 01:02:09,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:02:09,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash -238456545, now seen corresponding path program 1 times [2021-12-07 01:02:09,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:09,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717500688] [2021-12-07 01:02:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:09,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:02:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:02:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:02:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:02:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:02:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:02:09,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:09,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717500688] [2021-12-07 01:02:09,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717500688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:09,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:02:09,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 01:02:09,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963037193] [2021-12-07 01:02:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:09,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 01:02:09,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 01:02:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:02:09,496 INFO L87 Difference]: Start difference. First operand 54825 states and 90261 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:02:17,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:17,713 INFO L93 Difference]: Finished difference Result 184593 states and 299929 transitions. [2021-12-07 01:02:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 01:02:17,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2021-12-07 01:02:17,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:18,086 INFO L225 Difference]: With dead ends: 184593 [2021-12-07 01:02:18,086 INFO L226 Difference]: Without dead ends: 131905 [2021-12-07 01:02:18,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-07 01:02:18,204 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5048 mSDsluCounter, 12607 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17253 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:18,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17253 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 01:02:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131905 states. [2021-12-07 01:02:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131905 to 106229. [2021-12-07 01:02:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106229 states, 96235 states have (on average 1.524964929599418) internal successors, (146755), 97005 states have internal predecessors, (146755), 6408 states have call successors, (6408), 3072 states have call predecessors, (6408), 3584 states have return successors, (20297), 6407 states have call predecessors, (20297), 6408 states have call successors, (20297) [2021-12-07 01:02:24,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106229 states to 106229 states and 173460 transitions. [2021-12-07 01:02:24,167 INFO L78 Accepts]: Start accepts. Automaton has 106229 states and 173460 transitions. Word has length 112 [2021-12-07 01:02:24,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:24,167 INFO L470 AbstractCegarLoop]: Abstraction has 106229 states and 173460 transitions. [2021-12-07 01:02:24,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-07 01:02:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 106229 states and 173460 transitions. [2021-12-07 01:02:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 01:02:24,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:24,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:24,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:02:24,297 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1077919352, now seen corresponding path program 1 times [2021-12-07 01:02:24,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:24,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371402915] [2021-12-07 01:02:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:24,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:02:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:02:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:02:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:02:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:02:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 01:02:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:02:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 01:02:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:02:24,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371402915] [2021-12-07 01:02:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371402915] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:02:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154316592] [2021-12-07 01:02:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:24,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:24,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:24,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:02:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:24,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:02:24,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 01:02:24,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:24,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154316592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:24,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:02:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:02:24,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330710995] [2021-12-07 01:02:24,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:24,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:24,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:24,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:02:24,641 INFO L87 Difference]: Start difference. First operand 106229 states and 173460 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:02:33,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:02:33,794 INFO L93 Difference]: Finished difference Result 312619 states and 512666 transitions. [2021-12-07 01:02:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:02:33,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 182 [2021-12-07 01:02:33,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:02:34,482 INFO L225 Difference]: With dead ends: 312619 [2021-12-07 01:02:34,482 INFO L226 Difference]: Without dead ends: 208527 [2021-12-07 01:02:34,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:02:34,691 INFO L933 BasicCegarLoop]: 4313 mSDtfsCounter, 4227 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4227 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:02:34,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4227 Valid, 4624 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:02:34,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208527 states. [2021-12-07 01:02:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208527 to 207501. [2021-12-07 01:02:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207501 states, 187777 states have (on average 1.5200849944348882) internal successors, (285437), 189315 states have internal predecessors, (285437), 12554 states have call successors, (12554), 6144 states have call predecessors, (12554), 7168 states have return successors, (40075), 12297 states have call predecessors, (40075), 12554 states have call successors, (40075) [2021-12-07 01:02:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207501 states to 207501 states and 338066 transitions. [2021-12-07 01:02:45,842 INFO L78 Accepts]: Start accepts. Automaton has 207501 states and 338066 transitions. Word has length 182 [2021-12-07 01:02:45,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:02:45,843 INFO L470 AbstractCegarLoop]: Abstraction has 207501 states and 338066 transitions. [2021-12-07 01:02:45,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:02:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 207501 states and 338066 transitions. [2021-12-07 01:02:46,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 01:02:46,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:02:46,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:02:46,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:02:46,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 01:02:46,603 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:02:46,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:02:46,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1018752152, now seen corresponding path program 1 times [2021-12-07 01:02:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:02:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657961912] [2021-12-07 01:02:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:46,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:02:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:02:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:02:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:02:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:02:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:02:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 01:02:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:02:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 01:02:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:02:46,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:02:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657961912] [2021-12-07 01:02:46,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657961912] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:02:46,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036733736] [2021-12-07 01:02:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:02:46,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:02:46,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:02:46,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:02:46,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:02:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:02:46,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:02:46,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:02:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-07 01:02:47,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:02:47,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036733736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:02:47,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:02:47,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:02:47,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294360187] [2021-12-07 01:02:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:02:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:02:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:02:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:02:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:02:47,006 INFO L87 Difference]: Start difference. First operand 207501 states and 338066 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:03:05,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:03:05,994 INFO L93 Difference]: Finished difference Result 614643 states and 1006742 transitions. [2021-12-07 01:03:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:03:05,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 182 [2021-12-07 01:03:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:03:07,570 INFO L225 Difference]: With dead ends: 614643 [2021-12-07 01:03:07,571 INFO L226 Difference]: Without dead ends: 409279 [2021-12-07 01:03:08,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:08,066 INFO L933 BasicCegarLoop]: 4313 mSDtfsCounter, 4245 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4245 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:03:08,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4245 Valid, 4624 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:03:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409279 states. [2021-12-07 01:03:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409279 to 407229. [2021-12-07 01:03:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407229 states, 368301 states have (on average 1.516979318546515) internal successors, (558705), 371375 states have internal predecessors, (558705), 24590 states have call successors, (24590), 12288 states have call predecessors, (24590), 14336 states have return successors, (79375), 23821 states have call predecessors, (79375), 24590 states have call successors, (79375) [2021-12-07 01:03:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407229 states to 407229 states and 662670 transitions. [2021-12-07 01:03:30,664 INFO L78 Accepts]: Start accepts. Automaton has 407229 states and 662670 transitions. Word has length 182 [2021-12-07 01:03:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:03:30,755 INFO L470 AbstractCegarLoop]: Abstraction has 407229 states and 662670 transitions. [2021-12-07 01:03:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:03:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 407229 states and 662670 transitions. [2021-12-07 01:03:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 01:03:31,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:03:31,209 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:03:31,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:03:31,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 01:03:31,411 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:03:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:03:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1076964680, now seen corresponding path program 1 times [2021-12-07 01:03:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:03:31,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371322144] [2021-12-07 01:03:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:31,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:03:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:03:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:03:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:03:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:03:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:03:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 01:03:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:03:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 01:03:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:03:31,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:03:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371322144] [2021-12-07 01:03:31,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371322144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:03:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868707811] [2021-12-07 01:03:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:03:31,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:03:31,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:03:31,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:03:31,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:03:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:03:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:03:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:03:31,772 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-07 01:03:31,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:03:31,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868707811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:03:31,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:03:31,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:03:31,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113866621] [2021-12-07 01:03:31,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:03:31,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:03:31,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:03:31,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:03:31,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:03:31,774 INFO L87 Difference]: Start difference. First operand 407229 states and 662670 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:04:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:04:10,427 INFO L93 Difference]: Finished difference Result 1210243 states and 1980814 transitions. [2021-12-07 01:04:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:04:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 182 [2021-12-07 01:04:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:04:13,618 INFO L225 Difference]: With dead ends: 1210243 [2021-12-07 01:04:13,618 INFO L226 Difference]: Without dead ends: 805151 [2021-12-07 01:04:14,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:04:14,764 INFO L933 BasicCegarLoop]: 4313 mSDtfsCounter, 4239 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4239 SdHoareTripleChecker+Valid, 4624 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:04:14,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4239 Valid, 4624 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:04:15,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805151 states. [2021-12-07 01:04:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805151 to 801053. [2021-12-07 01:04:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801053 states, 724229 states have (on average 1.5147819267110265) internal successors, (1097049), 730375 states have internal predecessors, (1097049), 48150 states have call successors, (48150), 24576 states have call predecessors, (48150), 28672 states have return successors, (157463), 46357 states have call predecessors, (157463), 48150 states have call successors, (157463) [2021-12-07 01:05:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801053 states to 801053 states and 1302662 transitions. [2021-12-07 01:05:01,609 INFO L78 Accepts]: Start accepts. Automaton has 801053 states and 1302662 transitions. Word has length 182 [2021-12-07 01:05:01,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:05:01,609 INFO L470 AbstractCegarLoop]: Abstraction has 801053 states and 1302662 transitions. [2021-12-07 01:05:01,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-07 01:05:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 801053 states and 1302662 transitions. [2021-12-07 01:05:02,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-07 01:05:02,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:05:02,803 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:05:02,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-07 01:05:03,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 01:05:03,005 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:05:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:05:03,007 INFO L85 PathProgramCache]: Analyzing trace with hash 710136024, now seen corresponding path program 1 times [2021-12-07 01:05:03,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:05:03,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553828012] [2021-12-07 01:05:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:03,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:05:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:05:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:05:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:05:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:05:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:05:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 01:05:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:05:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 01:05:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 01:05:03,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:05:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553828012] [2021-12-07 01:05:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553828012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:05:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510419570] [2021-12-07 01:05:03,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:05:03,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:05:03,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:05:03,110 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:05:03,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 01:05:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:05:03,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:05:03,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:05:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-07 01:05:03,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:05:03,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510419570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:05:03,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:05:03,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 01:05:03,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927977357] [2021-12-07 01:05:03,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:05:03,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:05:03,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:05:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:05:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:05:03,339 INFO L87 Difference]: Start difference. First operand 801053 states and 1302662 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:06:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:20,790 INFO L93 Difference]: Finished difference Result 2370219 states and 3890576 transitions. [2021-12-07 01:06:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:06:20,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 182 [2021-12-07 01:06:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:06:27,677 INFO L225 Difference]: With dead ends: 2370219 [2021-12-07 01:06:27,677 INFO L226 Difference]: Without dead ends: 1571305 [2021-12-07 01:06:29,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:06:29,753 INFO L933 BasicCegarLoop]: 4619 mSDtfsCounter, 309 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 8920 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:06:29,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [309 Valid, 8920 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:06:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571305 states. [2021-12-07 01:07:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571305 to 1571305. [2021-12-07 01:07:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571305 states, 1421756 states have (on average 1.511632797751513) internal successors, (2149173), 1431999 states have internal predecessors, (2149173), 92203 states have call successors, (92203), 49152 states have call predecessors, (92203), 57344 states have return successors, (330303), 90665 states have call predecessors, (330303), 92203 states have call successors, (330303) [2021-12-07 01:08:05,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571305 states to 1571305 states and 2571679 transitions. [2021-12-07 01:08:05,510 INFO L78 Accepts]: Start accepts. Automaton has 1571305 states and 2571679 transitions. Word has length 182 [2021-12-07 01:08:05,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:08:05,510 INFO L470 AbstractCegarLoop]: Abstraction has 1571305 states and 2571679 transitions. [2021-12-07 01:08:05,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-07 01:08:05,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1571305 states and 2571679 transitions. [2021-12-07 01:08:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-12-07 01:08:10,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:08:10,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:08:10,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 01:08:10,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 01:08:10,409 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:08:10,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:08:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 246727101, now seen corresponding path program 1 times [2021-12-07 01:08:10,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:08:10,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826619227] [2021-12-07 01:08:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:10,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:08:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 01:08:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-07 01:08:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 01:08:10,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 01:08:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 01:08:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 01:08:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:08:10,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-07 01:08:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-07 01:08:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-07 01:08:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-07 01:08:10,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:08:10,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826619227] [2021-12-07 01:08:10,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826619227] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 01:08:10,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930140703] [2021-12-07 01:08:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:08:10,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:08:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:08:10,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:08:10,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c39f650-504c-4124-9ad3-cbdb0bf8a2a3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 01:08:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:08:10,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:08:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:08:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-07 01:08:10,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:08:10,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930140703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:08:10,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 01:08:10,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 01:08:10,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121699622] [2021-12-07 01:08:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:08:10,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:08:10,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:08:10,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:08:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:08:10,829 INFO L87 Difference]: Start difference. First operand 1571305 states and 2571679 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)