./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8 --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 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:12:26,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:12:26,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:12:26,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:12:26,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:12:26,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:12:26,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:12:26,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:12:26,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:12:26,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:12:26,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:12:26,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:12:26,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:12:26,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:12:26,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:12:26,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:12:26,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:12:26,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:12:26,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:12:26,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:12:26,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:12:26,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:12:26,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:12:26,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:12:26,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:12:26,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:12:26,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:12:26,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:12:26,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:12:26,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:12:26,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:12:26,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:12:26,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:12:26,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:12:26,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:12:26,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:12:26,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:12:26,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:12:26,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:12:26,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:12:26,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:12:26,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:12:26,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:12:26,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:12:26,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:12:26,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:12:26,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:12:26,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:12:26,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:12:26,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:12:26,620 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:12:26,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:12:26,622 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:12:26,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:12:26,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:12:26,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:12:26,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:12:26,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:12:26,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:12:26,624 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:12:26,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:12:26,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:12:26,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:12:26,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:12:26,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:12:26,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:12:26,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:26,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:12:26,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:12:26,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:12:26,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:12:26,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:12:26,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:12:26,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:12:26,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:12:26,630 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_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae [2022-11-16 11:12:26,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:12:27,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:12:27,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:12:27,016 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:12:27,017 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:12:27,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2022-11-16 11:12:27,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/data/4d0d8908a/14da338bab2846f09e99bca4c300f9ed/FLAG94e7082d7 [2022-11-16 11:12:28,307 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:12:28,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2022-11-16 11:12:28,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/data/4d0d8908a/14da338bab2846f09e99bca4c300f9ed/FLAG94e7082d7 [2022-11-16 11:12:28,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/data/4d0d8908a/14da338bab2846f09e99bca4c300f9ed [2022-11-16 11:12:28,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:12:28,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:12:28,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:28,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:12:28,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:12:28,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:28" (1/1) ... [2022-11-16 11:12:28,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d9fdc9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:28, skipping insertion in model container [2022-11-16 11:12:28,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:12:28" (1/1) ... [2022-11-16 11:12:28,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:12:28,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:12:31,787 WARN L229 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_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[377340,377353] [2022-11-16 11:12:31,831 WARN L229 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_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[383339,383352] [2022-11-16 11:12:32,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:32,077 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:12:33,514 WARN L229 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_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[377340,377353] [2022-11-16 11:12:33,525 WARN L229 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_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c[383339,383352] [2022-11-16 11:12:33,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:12:33,633 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:12:33,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33 WrapperNode [2022-11-16 11:12:33,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:12:33,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:33,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:12:33,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:12:33,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:33,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,122 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12677 [2022-11-16 11:12:34,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:12:34,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:12:34,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:12:34,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:12:34,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:12:34,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:12:34,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:12:34,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:12:34,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (1/1) ... [2022-11-16 11:12:34,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:12:34,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:34,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:12:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:12:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:12:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-16 11:12:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-16 11:12:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 11:12:35,051 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 11:12:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-16 11:12:35,052 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-16 11:12:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-16 11:12:35,052 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-16 11:12:35,052 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-16 11:12:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-16 11:12:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-16 11:12:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-16 11:12:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:12:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:12:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:12:35,285 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:12:35,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:12:45,298 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:12:45,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:12:45,335 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 11:12:45,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:45 BoogieIcfgContainer [2022-11-16 11:12:45,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:12:45,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:12:45,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:12:45,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:12:45,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:12:28" (1/3) ... [2022-11-16 11:12:45,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b26efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:45, skipping insertion in model container [2022-11-16 11:12:45,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:12:33" (2/3) ... [2022-11-16 11:12:45,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b26efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:12:45, skipping insertion in model container [2022-11-16 11:12:45,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:12:45" (3/3) ... [2022-11-16 11:12:45,349 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.03.cil-2.c [2022-11-16 11:12:45,368 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:12:45,369 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:12:45,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:12:45,490 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1c856270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:12:45,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:12:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 11:12:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:45,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:45,521 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:45,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 200056068, now seen corresponding path program 1 times [2022-11-16 11:12:45,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:45,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403134764] [2022-11-16 11:12:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403134764] [2022-11-16 11:12:46,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403134764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:46,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:46,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:12:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404203738] [2022-11-16 11:12:46,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:46,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:12:46,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:12:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:46,266 INFO L87 Difference]: Start difference. First operand has 2340 states, 2314 states have (on average 1.8556611927398445) internal successors, (4294), 2317 states have internal predecessors, (4294), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-16 11:12:48,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:48,082 INFO L93 Difference]: Finished difference Result 4899 states and 9012 transitions. [2022-11-16 11:12:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:12:48,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-11-16 11:12:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:48,111 INFO L225 Difference]: With dead ends: 4899 [2022-11-16 11:12:48,112 INFO L226 Difference]: Without dead ends: 2500 [2022-11-16 11:12:48,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:12:48,136 INFO L413 NwaCegarLoop]: 4179 mSDtfsCounter, 4551 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 16647 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:48,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 16647 Invalid, 882 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:12:48,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2022-11-16 11:12:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2415. [2022-11-16 11:12:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2371 states have (on average 1.8291859974694222) internal successors, (4337), 2374 states have internal predecessors, (4337), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2022-11-16 11:12:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 4398 transitions. [2022-11-16 11:12:48,345 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 4398 transitions. Word has length 79 [2022-11-16 11:12:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:48,346 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 4398 transitions. [2022-11-16 11:12:48,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-16 11:12:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 4398 transitions. [2022-11-16 11:12:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:48,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:48,363 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:48,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:12:48,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:48,365 INFO L85 PathProgramCache]: Analyzing trace with hash 437104264, now seen corresponding path program 1 times [2022-11-16 11:12:48,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:48,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273647421] [2022-11-16 11:12:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:48,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:48,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273647421] [2022-11-16 11:12:48,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273647421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:48,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:48,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:48,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100022978] [2022-11-16 11:12:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:48,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:48,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:48,671 INFO L87 Difference]: Start difference. First operand 2415 states and 4398 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:50,562 INFO L93 Difference]: Finished difference Result 2969 states and 5244 transitions. [2022-11-16 11:12:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:12:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:12:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:50,577 INFO L225 Difference]: With dead ends: 2969 [2022-11-16 11:12:50,578 INFO L226 Difference]: Without dead ends: 2686 [2022-11-16 11:12:50,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:12:50,585 INFO L413 NwaCegarLoop]: 4186 mSDtfsCounter, 4481 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 20741 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:50,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4491 Valid, 20741 Invalid, 1269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:12:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-11-16 11:12:50,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2548. [2022-11-16 11:12:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 2485 states have (on average 1.8132796780684104) internal successors, (4506), 2489 states have internal predecessors, (4506), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-11-16 11:12:50,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 4593 transitions. [2022-11-16 11:12:50,732 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 4593 transitions. Word has length 79 [2022-11-16 11:12:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:50,733 INFO L495 AbstractCegarLoop]: Abstraction has 2548 states and 4593 transitions. [2022-11-16 11:12:50,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 4593 transitions. [2022-11-16 11:12:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:50,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:50,739 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:12:50,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash 382711366, now seen corresponding path program 1 times [2022-11-16 11:12:50,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936985137] [2022-11-16 11:12:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:50,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:51,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936985137] [2022-11-16 11:12:51,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936985137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:51,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:51,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045275964] [2022-11-16 11:12:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:51,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:51,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:51,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:51,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:51,064 INFO L87 Difference]: Start difference. First operand 2548 states and 4593 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:53,012 INFO L93 Difference]: Finished difference Result 3451 states and 5967 transitions. [2022-11-16 11:12:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:12:53,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:12:53,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:53,029 INFO L225 Difference]: With dead ends: 3451 [2022-11-16 11:12:53,030 INFO L226 Difference]: Without dead ends: 3035 [2022-11-16 11:12:53,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:12:53,034 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4479 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4489 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:53,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4489 Valid, 20739 Invalid, 1267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:12:53,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-16 11:12:53,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2815. [2022-11-16 11:12:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2714 states have (on average 1.7851879145173175) internal successors, (4845), 2720 states have internal predecessors, (4845), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2022-11-16 11:12:53,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 4988 transitions. [2022-11-16 11:12:53,193 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 4988 transitions. Word has length 79 [2022-11-16 11:12:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:53,193 INFO L495 AbstractCegarLoop]: Abstraction has 2815 states and 4988 transitions. [2022-11-16 11:12:53,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:53,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 4988 transitions. [2022-11-16 11:12:53,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:53,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:53,197 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:12:53,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash -34685240, now seen corresponding path program 1 times [2022-11-16 11:12:53,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:53,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021047217] [2022-11-16 11:12:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:53,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:53,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021047217] [2022-11-16 11:12:53,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021047217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:53,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:53,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623740491] [2022-11-16 11:12:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:53,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:53,402 INFO L87 Difference]: Start difference. First operand 2815 states and 4988 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:55,407 INFO L93 Difference]: Finished difference Result 4382 states and 7362 transitions. [2022-11-16 11:12:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:12:55,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:12:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:55,426 INFO L225 Difference]: With dead ends: 4382 [2022-11-16 11:12:55,426 INFO L226 Difference]: Without dead ends: 3699 [2022-11-16 11:12:55,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:12:55,431 INFO L413 NwaCegarLoop]: 4184 mSDtfsCounter, 4475 mSDsluCounter, 16555 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 20739 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:55,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4485 Valid, 20739 Invalid, 1258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 11:12:55,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2022-11-16 11:12:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3350. [2022-11-16 11:12:55,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3173 states have (on average 1.7406240151276395) internal successors, (5523), 3183 states have internal predecessors, (5523), 113 states have call successors, (113), 54 states have call predecessors, (113), 62 states have return successors, (148), 120 states have call predecessors, (148), 113 states have call successors, (148) [2022-11-16 11:12:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 5784 transitions. [2022-11-16 11:12:55,610 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 5784 transitions. Word has length 79 [2022-11-16 11:12:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:55,610 INFO L495 AbstractCegarLoop]: Abstraction has 3350 states and 5784 transitions. [2022-11-16 11:12:55,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 5784 transitions. [2022-11-16 11:12:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:55,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:55,621 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:12:55,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:55,628 INFO L85 PathProgramCache]: Analyzing trace with hash 644587014, now seen corresponding path program 1 times [2022-11-16 11:12:55,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:55,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872693596] [2022-11-16 11:12:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:55,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:55,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872693596] [2022-11-16 11:12:55,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872693596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:55,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:55,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812584477] [2022-11-16 11:12:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:55,859 INFO L87 Difference]: Start difference. First operand 3350 states and 5784 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:57,718 INFO L93 Difference]: Finished difference Result 6651 states and 10762 transitions. [2022-11-16 11:12:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:12:57,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:12:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:57,748 INFO L225 Difference]: With dead ends: 6651 [2022-11-16 11:12:57,748 INFO L226 Difference]: Without dead ends: 5433 [2022-11-16 11:12:57,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:12:57,759 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4606 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4620 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:57,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4620 Valid, 20729 Invalid, 1247 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:12:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-11-16 11:12:58,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 4401. [2022-11-16 11:12:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4401 states, 4080 states have (on average 1.683578431372549) internal successors, (6869), 4098 states have internal predecessors, (6869), 201 states have call successors, (201), 102 states have call predecessors, (201), 118 states have return successors, (298), 216 states have call predecessors, (298), 201 states have call successors, (298) [2022-11-16 11:12:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4401 states to 4401 states and 7368 transitions. [2022-11-16 11:12:58,120 INFO L78 Accepts]: Start accepts. Automaton has 4401 states and 7368 transitions. Word has length 79 [2022-11-16 11:12:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:58,121 INFO L495 AbstractCegarLoop]: Abstraction has 4401 states and 7368 transitions. [2022-11-16 11:12:58,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:12:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4401 states and 7368 transitions. [2022-11-16 11:12:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:12:58,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:58,124 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:12:58,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:12:58,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1688805624, now seen corresponding path program 1 times [2022-11-16 11:12:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:58,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036091444] [2022-11-16 11:12:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:58,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:12:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:12:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:12:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:12:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:12:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:12:58,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:58,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036091444] [2022-11-16 11:12:58,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036091444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:58,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:58,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:12:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438458936] [2022-11-16 11:12:58,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:12:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:12:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:12:58,314 INFO L87 Difference]: Start difference. First operand 4401 states and 7368 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:13:00,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:00,449 INFO L93 Difference]: Finished difference Result 10516 states and 16624 transitions. [2022-11-16 11:13:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:13:00,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:13:00,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:00,496 INFO L225 Difference]: With dead ends: 10516 [2022-11-16 11:13:00,496 INFO L226 Difference]: Without dead ends: 8247 [2022-11-16 11:13:00,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:13:00,509 INFO L413 NwaCegarLoop]: 4181 mSDtfsCounter, 4495 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4504 SdHoareTripleChecker+Valid, 20725 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4504 Valid, 20725 Invalid, 1417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 11:13:00,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2022-11-16 11:13:01,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 6412. [2022-11-16 11:13:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 5811 states have (on average 1.6236448115642748) internal successors, (9435), 5845 states have internal predecessors, (9435), 369 states have call successors, (369), 198 states have call predecessors, (369), 230 states have return successors, (644), 400 states have call predecessors, (644), 369 states have call successors, (644) [2022-11-16 11:13:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 10448 transitions. [2022-11-16 11:13:01,074 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 10448 transitions. Word has length 79 [2022-11-16 11:13:01,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:01,075 INFO L495 AbstractCegarLoop]: Abstraction has 6412 states and 10448 transitions. [2022-11-16 11:13:01,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:13:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 10448 transitions. [2022-11-16 11:13:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:13:01,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:01,081 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:13:01,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:13:01,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1486981690, now seen corresponding path program 1 times [2022-11-16 11:13:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:01,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93167900] [2022-11-16 11:13:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:01,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:13:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:13:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:13:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:13:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:13:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:01,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93167900] [2022-11-16 11:13:01,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93167900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:01,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:01,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:13:01,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671551453] [2022-11-16 11:13:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:01,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:13:01,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:01,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:13:01,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:13:01,237 INFO L87 Difference]: Start difference. First operand 6412 states and 10448 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:13:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:03,811 INFO L93 Difference]: Finished difference Result 17230 states and 26990 transitions. [2022-11-16 11:13:03,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:13:03,812 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-11-16 11:13:03,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:03,887 INFO L225 Difference]: With dead ends: 17230 [2022-11-16 11:13:03,887 INFO L226 Difference]: Without dead ends: 12950 [2022-11-16 11:13:03,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:13:03,910 INFO L413 NwaCegarLoop]: 4182 mSDtfsCounter, 4484 mSDsluCounter, 16547 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 20729 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:03,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4498 Valid, 20729 Invalid, 1204 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 11:13:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-11-16 11:13:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 10528. [2022-11-16 11:13:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10528 states, 9383 states have (on average 1.5742299904081851) internal successors, (14771), 9449 states have internal predecessors, (14771), 689 states have call successors, (689), 390 states have call predecessors, (689), 454 states have return successors, (1482), 752 states have call predecessors, (1482), 689 states have call successors, (1482) [2022-11-16 11:13:05,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10528 states to 10528 states and 16942 transitions. [2022-11-16 11:13:05,157 INFO L78 Accepts]: Start accepts. Automaton has 10528 states and 16942 transitions. Word has length 79 [2022-11-16 11:13:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:05,157 INFO L495 AbstractCegarLoop]: Abstraction has 10528 states and 16942 transitions. [2022-11-16 11:13:05,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-11-16 11:13:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 10528 states and 16942 transitions. [2022-11-16 11:13:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:13:05,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:05,170 INFO L195 NwaCegarLoop]: 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] [2022-11-16 11:13:05,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:13:05,175 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:05,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:05,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1053252604, now seen corresponding path program 1 times [2022-11-16 11:13:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:05,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563160245] [2022-11-16 11:13:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:05,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:13:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:13:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:13:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:13:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:13:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:13:05,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:05,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563160245] [2022-11-16 11:13:05,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563160245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:05,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:13:05,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:13:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151990920] [2022-11-16 11:13:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:05,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:13:05,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:13:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:13:05,327 INFO L87 Difference]: Start difference. First operand 10528 states and 16942 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-16 11:13:07,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:07,849 INFO L93 Difference]: Finished difference Result 25979 states and 40698 transitions. [2022-11-16 11:13:07,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:13:07,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-11-16 11:13:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:07,916 INFO L225 Difference]: With dead ends: 25979 [2022-11-16 11:13:07,916 INFO L226 Difference]: Without dead ends: 17584 [2022-11-16 11:13:07,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:13:07,950 INFO L413 NwaCegarLoop]: 4214 mSDtfsCounter, 4648 mSDsluCounter, 12328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:13:07,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 16542 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:13:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17584 states. [2022-11-16 11:13:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17584 to 14721. [2022-11-16 11:13:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12981 states have (on average 1.5384793159232726) internal successors, (19971), 13112 states have internal predecessors, (19971), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 684 states have return successors, (2091), 1084 states have call predecessors, (2091), 1054 states have call successors, (2091) [2022-11-16 11:13:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 23116 transitions. [2022-11-16 11:13:09,109 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 23116 transitions. Word has length 79 [2022-11-16 11:13:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:09,109 INFO L495 AbstractCegarLoop]: Abstraction has 14721 states and 23116 transitions. [2022-11-16 11:13:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-11-16 11:13:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 23116 transitions. [2022-11-16 11:13:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 11:13:09,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:09,155 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:09,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:13:09,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1451529571, now seen corresponding path program 1 times [2022-11-16 11:13:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:09,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32147877] [2022-11-16 11:13:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:13:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:13:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:13:09,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:13:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:13:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:13:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 11:13:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:13:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,552 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:13:09,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:09,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32147877] [2022-11-16 11:13:09,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32147877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:09,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519557217] [2022-11-16 11:13:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:09,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:09,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:09,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:13:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:09,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:09,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:13:09,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:09,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519557217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:09,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:09,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-16 11:13:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191054259] [2022-11-16 11:13:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:09,880 INFO L87 Difference]: Start difference. First operand 14721 states and 23116 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-11-16 11:13:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:12,376 INFO L93 Difference]: Finished difference Result 39550 states and 61248 transitions. [2022-11-16 11:13:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 128 [2022-11-16 11:13:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:12,521 INFO L225 Difference]: With dead ends: 39550 [2022-11-16 11:13:12,522 INFO L226 Difference]: Without dead ends: 26962 [2022-11-16 11:13:12,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:12,579 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4136 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 4390 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 [2022-11-16 11:13:12,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:13:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26962 states. [2022-11-16 11:13:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26962 to 26764. [2022-11-16 11:13:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26764 states, 23340 states have (on average 1.5074550128534705) internal successors, (35184), 23600 states have internal predecessors, (35184), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 1368 states have return successors, (4065), 2051 states have call predecessors, (4065), 2054 states have call successors, (4065) [2022-11-16 11:13:14,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26764 states to 26764 states and 41303 transitions. [2022-11-16 11:13:14,526 INFO L78 Accepts]: Start accepts. Automaton has 26764 states and 41303 transitions. Word has length 128 [2022-11-16 11:13:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:14,526 INFO L495 AbstractCegarLoop]: Abstraction has 26764 states and 41303 transitions. [2022-11-16 11:13:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-11-16 11:13:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 26764 states and 41303 transitions. [2022-11-16 11:13:14,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 11:13:14,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:14,598 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:14,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:14,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:14,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:14,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1829435325, now seen corresponding path program 1 times [2022-11-16 11:13:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:14,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117651683] [2022-11-16 11:13:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:14,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:13:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:13:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:13:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:13:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:13:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:13:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 11:13:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:13:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:15,016 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:13:15,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:15,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117651683] [2022-11-16 11:13:15,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117651683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:15,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110961677] [2022-11-16 11:13:15,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:15,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:15,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:15,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:15,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:13:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:15,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:15,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:13:15,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:15,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110961677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:15,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:15,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-16 11:13:15,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459693394] [2022-11-16 11:13:15,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:15,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:15,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:15,281 INFO L87 Difference]: Start difference. First operand 26764 states and 41303 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-11-16 11:13:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:18,958 INFO L93 Difference]: Finished difference Result 75333 states and 115677 transitions. [2022-11-16 11:13:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:18,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 128 [2022-11-16 11:13:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:19,181 INFO L225 Difference]: With dead ends: 75333 [2022-11-16 11:13:19,182 INFO L226 Difference]: Without dead ends: 50702 [2022-11-16 11:13:19,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:19,256 INFO L413 NwaCegarLoop]: 4192 mSDtfsCounter, 4130 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 4390 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 [2022-11-16 11:13:19,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 4390 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:13:19,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50702 states. [2022-11-16 11:13:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50702 to 50308. [2022-11-16 11:13:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 43566 states have (on average 1.4879493182757195) internal successors, (64824), 44084 states have internal predecessors, (64824), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 2736 states have return successors, (7963), 3935 states have call predecessors, (7963), 4004 states have call successors, (7963) [2022-11-16 11:13:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 76791 transitions. [2022-11-16 11:13:23,209 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 76791 transitions. Word has length 128 [2022-11-16 11:13:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:13:23,210 INFO L495 AbstractCegarLoop]: Abstraction has 50308 states and 76791 transitions. [2022-11-16 11:13:23,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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) [2022-11-16 11:13:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 76791 transitions. [2022-11-16 11:13:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 11:13:23,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:13:23,323 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:13:23,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:13:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:13:23,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:13:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:13:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1038951203, now seen corresponding path program 1 times [2022-11-16 11:13:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:13:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398426236] [2022-11-16 11:13:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:13:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:13:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:13:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:13:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:13:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:13:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:13:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-16 11:13:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:13:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:13:23,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:13:23,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398426236] [2022-11-16 11:13:23,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398426236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:13:23,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807389145] [2022-11-16 11:13:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:13:23,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:13:23,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:13:23,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:13:23,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a9fe2d5-2291-4412-ab3b-a6fd84e5d2b1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:13:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:13:23,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:13:23,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:13:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-16 11:13:23,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:13:23,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807389145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:13:23,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:13:23,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 11:13:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760257131] [2022-11-16 11:13:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:13:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:13:23,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:13:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:13:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:23,965 INFO L87 Difference]: Start difference. First operand 50308 states and 76791 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2022-11-16 11:13:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:13:30,196 INFO L93 Difference]: Finished difference Result 144685 states and 222029 transitions. [2022-11-16 11:13:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:13:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 128 [2022-11-16 11:13:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:13:30,842 INFO L225 Difference]: With dead ends: 144685 [2022-11-16 11:13:30,842 INFO L226 Difference]: Without dead ends: 96511 [2022-11-16 11:13:31,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:13:31,019 INFO L413 NwaCegarLoop]: 4382 mSDtfsCounter, 194 mSDsluCounter, 4180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 8562 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 [2022-11-16 11:13:31,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 8562 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:13:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96511 states. [2022-11-16 11:13:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96511 to 96511. [2022-11-16 11:13:38,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96511 states, 83294 states have (on average 1.4710663433140443) internal successors, (122531), 84197 states have internal predecessors, (122531), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 5472 states have return successors, (17046), 7737 states have call predecessors, (17046), 7743 states have call successors, (17046)