./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a --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 e7f05adfe3188223e40d6d03e9bb9b8e606803720f2852bb7411adc46181c52f --- 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-b5237d8 [2022-11-21 17:10:13,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:10:13,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:10:13,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:10:13,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:10:13,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:10:13,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:10:13,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:10:13,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:10:13,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:10:13,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:10:13,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:10:13,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:10:13,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:10:13,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:10:13,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:10:13,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:10:13,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:10:13,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:10:13,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:10:13,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:10:13,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:10:13,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:10:13,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:10:13,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:10:13,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:10:13,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:10:13,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:10:13,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:10:13,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:10:13,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:10:13,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:10:13,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:10:13,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:10:13,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:10:13,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:10:13,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:10:13,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:10:13,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:10:13,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:10:13,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:10:13,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:10:13,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:10:13,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:10:13,450 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:10:13,450 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:10:13,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:10:13,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:10:13,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:10:13,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:10:13,453 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:10:13,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:10:13,454 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:10:13,454 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:10:13,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:10:13,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:10:13,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:10:13,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:10:13,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:10:13,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:10:13,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:10:13,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:10:13,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:10:13,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:10:13,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:10:13,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:10:13,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:13,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:10:13,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:10:13,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:10:13,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:10:13,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:10:13,460 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:10:13,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:10:13,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:10:13,460 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_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f05adfe3188223e40d6d03e9bb9b8e606803720f2852bb7411adc46181c52f [2022-11-21 17:10:13,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:10:13,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:10:13,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:10:13,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:10:13,797 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:10:13,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c [2022-11-21 17:10:16,750 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:10:17,555 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:10:17,556 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c [2022-11-21 17:10:17,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/data/68f8df9a0/e63e2701bd1e48cb9fa5f063968a7b91/FLAGbd0622f74 [2022-11-21 17:10:17,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/data/68f8df9a0/e63e2701bd1e48cb9fa5f063968a7b91 [2022-11-21 17:10:17,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:10:17,646 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:10:17,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:17,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:10:17,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:10:17,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:17" (1/1) ... [2022-11-21 17:10:17,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d4e379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:17, skipping insertion in model container [2022-11-21 17:10:17,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:17" (1/1) ... [2022-11-21 17:10:17,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:10:17,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:10:20,288 WARN L237 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_f17db767-723e-48cf-b5ac-68e19589e02b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[378560,378573] [2022-11-21 17:10:20,321 WARN L237 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_f17db767-723e-48cf-b5ac-68e19589e02b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[383339,383352] [2022-11-21 17:10:20,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:20,686 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:10:21,934 WARN L237 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_f17db767-723e-48cf-b5ac-68e19589e02b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[378560,378573] [2022-11-21 17:10:21,943 WARN L237 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_f17db767-723e-48cf-b5ac-68e19589e02b/sv-benchmarks/c/combinations/Problem05_label42+token_ring.12.cil-1.c[383339,383352] [2022-11-21 17:10:21,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:22,052 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:10:22,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22 WrapperNode [2022-11-21 17:10:22,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:22,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:22,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:10:22,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:10:22,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,509 INFO L138 Inliner]: procedures = 68, calls = 78, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 13204 [2022-11-21 17:10:22,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:22,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:10:22,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:10:22,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:10:22,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:22,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:23,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:23,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:23,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:10:23,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:10:23,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:10:23,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:10:23,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (1/1) ... [2022-11-21 17:10:23,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:23,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:10:23,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f17db767-723e-48cf-b5ac-68e19589e02b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:10:23,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:10:23,251 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 17:10:23,251 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 17:10:23,252 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 17:10:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 17:10:23,253 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 17:10:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 17:10:23,253 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-21 17:10:23,253 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-21 17:10:23,253 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 17:10:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 17:10:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 17:10:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 17:10:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 17:10:23,254 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 17:10:23,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:10:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:10:23,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:10:23,433 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:10:23,436 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:10:33,108 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:10:33,140 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:10:33,140 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-21 17:10:33,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:33 BoogieIcfgContainer [2022-11-21 17:10:33,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:10:33,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:10:33,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:10:33,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:10:33,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:10:17" (1/3) ... [2022-11-21 17:10:33,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c65aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:33, skipping insertion in model container [2022-11-21 17:10:33,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:22" (2/3) ... [2022-11-21 17:10:33,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c65aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:33, skipping insertion in model container [2022-11-21 17:10:33,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:33" (3/3) ... [2022-11-21 17:10:33,157 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.12.cil-1.c [2022-11-21 17:10:33,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:10:33,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 17:10:33,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:10:33,290 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;@6e1e2732, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:10:33,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 17:10:33,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-21 17:10:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:33,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:33,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:33,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -354915978, now seen corresponding path program 1 times [2022-11-21 17:10:33,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:33,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430933688] [2022-11-21 17:10:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:34,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:34,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430933688] [2022-11-21 17:10:34,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430933688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:34,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:34,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:10:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194598204] [2022-11-21 17:10:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:34,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:10:34,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:34,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:10:34,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:10:34,292 INFO L87 Difference]: Start difference. First operand has 2573 states, 2535 states have (on average 1.8433925049309665) internal successors, (4673), 2540 states have internal predecessors, (4673), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:37,213 INFO L93 Difference]: Finished difference Result 5281 states and 9692 transitions. [2022-11-21 17:10:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:10:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:10:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:37,243 INFO L225 Difference]: With dead ends: 5281 [2022-11-21 17:10:37,244 INFO L226 Difference]: Without dead ends: 2647 [2022-11-21 17:10:37,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:10:37,259 INFO L413 NwaCegarLoop]: 4381 mSDtfsCounter, 1052 mSDsluCounter, 12483 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 16864 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:37,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 16864 Invalid, 1097 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:10:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-21 17:10:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-11-21 17:10:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8266504657756177) internal successors, (4510), 2472 states have internal predecessors, (4510), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-21 17:10:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4564 transitions. [2022-11-21 17:10:37,427 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4564 transitions. Word has length 179 [2022-11-21 17:10:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:37,427 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4564 transitions. [2022-11-21 17:10:37,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4564 transitions. [2022-11-21 17:10:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:37,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:37,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:10:37,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1148182328, now seen corresponding path program 1 times [2022-11-21 17:10:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:37,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101281426] [2022-11-21 17:10:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:37,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:37,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101281426] [2022-11-21 17:10:37,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101281426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:37,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:37,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:10:37,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773365328] [2022-11-21 17:10:37,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:10:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:10:37,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:10:37,676 INFO L87 Difference]: Start difference. First operand 2505 states and 4564 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:40,233 INFO L93 Difference]: Finished difference Result 3016 states and 5390 transitions. [2022-11-21 17:10:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:10:40,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:10:40,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:40,246 INFO L225 Difference]: With dead ends: 3016 [2022-11-21 17:10:40,247 INFO L226 Difference]: Without dead ends: 2647 [2022-11-21 17:10:40,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:10:40,251 INFO L413 NwaCegarLoop]: 4311 mSDtfsCounter, 1038 mSDsluCounter, 12280 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 16591 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:40,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 16591 Invalid, 1096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:10:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-21 17:10:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2505. [2022-11-21 17:10:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2469 states have (on average 1.8262454434993924) internal successors, (4509), 2472 states have internal predecessors, (4509), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-21 17:10:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4563 transitions. [2022-11-21 17:10:40,393 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4563 transitions. Word has length 179 [2022-11-21 17:10:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:40,394 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4563 transitions. [2022-11-21 17:10:40,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4563 transitions. [2022-11-21 17:10:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:40,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:40,399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:40,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:10:40,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:40,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash 577910522, now seen corresponding path program 1 times [2022-11-21 17:10:40,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:40,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141675768] [2022-11-21 17:10:40,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:40,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:40,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141675768] [2022-11-21 17:10:40,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141675768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:40,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:40,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:10:40,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622191337] [2022-11-21 17:10:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:40,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:10:40,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:10:40,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:10:40,857 INFO L87 Difference]: Start difference. First operand 2505 states and 4563 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:45,507 INFO L93 Difference]: Finished difference Result 3535 states and 6234 transitions. [2022-11-21 17:10:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:10:45,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:10:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:45,522 INFO L225 Difference]: With dead ends: 3535 [2022-11-21 17:10:45,523 INFO L226 Difference]: Without dead ends: 3171 [2022-11-21 17:10:45,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:10:45,526 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 5533 mSDsluCounter, 12854 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 17170 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:45,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 17170 Invalid, 2495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 17:10:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2022-11-21 17:10:45,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 2886. [2022-11-21 17:10:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2822 states have (on average 1.7983699503897945) internal successors, (5075), 2826 states have internal predecessors, (5075), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-11-21 17:10:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 5174 transitions. [2022-11-21 17:10:45,692 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 5174 transitions. Word has length 179 [2022-11-21 17:10:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:45,693 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 5174 transitions. [2022-11-21 17:10:45,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:45,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 5174 transitions. [2022-11-21 17:10:45,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:45,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:45,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:45,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:10:45,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:45,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -807829258, now seen corresponding path program 1 times [2022-11-21 17:10:45,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:45,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899442229] [2022-11-21 17:10:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:45,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:45,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:46,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:46,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:46,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:46,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899442229] [2022-11-21 17:10:46,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899442229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:46,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:46,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:10:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796416922] [2022-11-21 17:10:46,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:46,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:10:46,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:46,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:10:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:10:46,107 INFO L87 Difference]: Start difference. First operand 2886 states and 5174 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:51,475 INFO L93 Difference]: Finished difference Result 4458 states and 7728 transitions. [2022-11-21 17:10:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:10:51,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:10:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:51,492 INFO L225 Difference]: With dead ends: 4458 [2022-11-21 17:10:51,492 INFO L226 Difference]: Without dead ends: 3713 [2022-11-21 17:10:51,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:10:51,497 INFO L413 NwaCegarLoop]: 4530 mSDtfsCounter, 5566 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5585 SdHoareTripleChecker+Valid, 22314 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:51,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5585 Valid, 22314 Invalid, 3664 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 17:10:51,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-11-21 17:10:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3240. [2022-11-21 17:10:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 3148 states have (on average 1.7747776365946633) internal successors, (5587), 3153 states have internal predecessors, (5587), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-11-21 17:10:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5730 transitions. [2022-11-21 17:10:51,712 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5730 transitions. Word has length 179 [2022-11-21 17:10:51,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:51,718 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5730 transitions. [2022-11-21 17:10:51,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:51,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5730 transitions. [2022-11-21 17:10:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:51,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:51,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:51,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:10:51,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:51,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1717666424, now seen corresponding path program 1 times [2022-11-21 17:10:51,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:51,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351795969] [2022-11-21 17:10:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:51,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:51,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:51,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:52,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351795969] [2022-11-21 17:10:52,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351795969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:52,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:52,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:10:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019134299] [2022-11-21 17:10:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:52,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:10:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:10:52,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:10:52,050 INFO L87 Difference]: Start difference. First operand 3240 states and 5730 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:57,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:57,253 INFO L93 Difference]: Finished difference Result 5819 states and 9912 transitions. [2022-11-21 17:10:57,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:10:57,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:10:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:57,272 INFO L225 Difference]: With dead ends: 5819 [2022-11-21 17:10:57,273 INFO L226 Difference]: Without dead ends: 4720 [2022-11-21 17:10:57,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:10:57,278 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 5680 mSDsluCounter, 17110 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5699 SdHoareTripleChecker+Valid, 21431 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:57,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5699 Valid, 21431 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 17:10:57,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4720 states. [2022-11-21 17:10:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4720 to 3949. [2022-11-21 17:10:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3949 states, 3801 states have (on average 1.739542225730071) internal successors, (6612), 3808 states have internal predecessors, (6612), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-11-21 17:10:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3949 states to 3949 states and 6847 transitions. [2022-11-21 17:10:57,623 INFO L78 Accepts]: Start accepts. Automaton has 3949 states and 6847 transitions. Word has length 179 [2022-11-21 17:10:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:57,623 INFO L495 AbstractCegarLoop]: Abstraction has 3949 states and 6847 transitions. [2022-11-21 17:10:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:10:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 3949 states and 6847 transitions. [2022-11-21 17:10:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:10:57,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:57,628 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:57,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:10:57,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1106397366, now seen corresponding path program 1 times [2022-11-21 17:10:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:57,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151679406] [2022-11-21 17:10:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:57,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:10:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:10:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:10:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:10:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:10:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151679406] [2022-11-21 17:10:58,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151679406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:58,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:58,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:10:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331888150] [2022-11-21 17:10:58,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:58,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:10:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:10:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:10:58,022 INFO L87 Difference]: Start difference. First operand 3949 states and 6847 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:03,698 INFO L93 Difference]: Finished difference Result 8436 states and 14085 transitions. [2022-11-21 17:11:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:03,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:03,729 INFO L225 Difference]: With dead ends: 8436 [2022-11-21 17:11:03,729 INFO L226 Difference]: Without dead ends: 6628 [2022-11-21 17:11:03,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:03,738 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5564 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3586 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5583 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:03,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5583 Valid, 22312 Invalid, 3655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3586 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 17:11:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2022-11-21 17:11:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5368. [2022-11-21 17:11:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5108 states have (on average 1.6957713390759592) internal successors, (8662), 5119 states have internal predecessors, (8662), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-11-21 17:11:04,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 9087 transitions. [2022-11-21 17:11:04,275 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 9087 transitions. Word has length 179 [2022-11-21 17:11:04,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:04,277 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 9087 transitions. [2022-11-21 17:11:04,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:04,277 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 9087 transitions. [2022-11-21 17:11:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:11:04,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:04,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:11:04,282 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:04,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -298794312, now seen corresponding path program 1 times [2022-11-21 17:11:04,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:04,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008175544] [2022-11-21 17:11:04,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:04,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:11:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:11:04,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:11:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:11:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:11:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:04,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:04,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:04,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008175544] [2022-11-21 17:11:04,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008175544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:04,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:04,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:04,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600453142] [2022-11-21 17:11:04,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:04,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:11:04,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:04,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:11:04,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:11:04,645 INFO L87 Difference]: Start difference. First operand 5368 states and 9087 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:10,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:10,683 INFO L93 Difference]: Finished difference Result 13662 states and 22435 transitions. [2022-11-21 17:11:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:10,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:10,724 INFO L225 Difference]: With dead ends: 13662 [2022-11-21 17:11:10,725 INFO L226 Difference]: Without dead ends: 10435 [2022-11-21 17:11:10,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:10,738 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5560 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5579 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:10,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5579 Valid, 22312 Invalid, 3627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 17:11:10,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-11-21 17:11:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 8220. [2022-11-21 17:11:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8220 states, 7736 states have (on average 1.6527921406411583) internal successors, (12786), 7755 states have internal predecessors, (12786), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-11-21 17:11:11,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8220 states to 8220 states and 13609 transitions. [2022-11-21 17:11:11,649 INFO L78 Accepts]: Start accepts. Automaton has 8220 states and 13609 transitions. Word has length 179 [2022-11-21 17:11:11,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:11,650 INFO L495 AbstractCegarLoop]: Abstraction has 8220 states and 13609 transitions. [2022-11-21 17:11:11,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:11,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8220 states and 13609 transitions. [2022-11-21 17:11:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:11:11,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:11,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:11,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:11:11,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:11,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1147786554, now seen corresponding path program 1 times [2022-11-21 17:11:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:11,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796125956] [2022-11-21 17:11:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:11,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:11:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:11:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:11:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:11:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:11:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:11,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:11,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796125956] [2022-11-21 17:11:11,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796125956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:11,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:11,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:11,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602573659] [2022-11-21 17:11:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:11,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:11:11,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:11:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:11:11,959 INFO L87 Difference]: Start difference. First operand 8220 states and 13609 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:18,879 INFO L93 Difference]: Finished difference Result 24132 states and 39227 transitions. [2022-11-21 17:11:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:18,945 INFO L225 Difference]: With dead ends: 24132 [2022-11-21 17:11:18,945 INFO L226 Difference]: Without dead ends: 18053 [2022-11-21 17:11:18,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:18,968 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5559 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:18,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5578 Valid, 22312 Invalid, 3614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 17:11:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2022-11-21 17:11:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 13937. [2022-11-21 17:11:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6187620146097654) internal successors, (21052), 13040 states have internal predecessors, (21052), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-21 17:11:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22725 transitions. [2022-11-21 17:11:20,631 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22725 transitions. Word has length 179 [2022-11-21 17:11:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:20,631 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22725 transitions. [2022-11-21 17:11:20,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:20,632 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22725 transitions. [2022-11-21 17:11:20,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:11:20,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:20,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:20,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:11:20,642 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:20,644 INFO L85 PathProgramCache]: Analyzing trace with hash 224619128, now seen corresponding path program 1 times [2022-11-21 17:11:20,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:20,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346288506] [2022-11-21 17:11:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:20,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:11:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:11:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:11:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:11:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:11:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346288506] [2022-11-21 17:11:20,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346288506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:20,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:20,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310686223] [2022-11-21 17:11:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:20,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:11:20,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:11:20,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:11:20,969 INFO L87 Difference]: Start difference. First operand 13937 states and 22725 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:25,977 INFO L93 Difference]: Finished difference Result 30100 states and 49050 transitions. [2022-11-21 17:11:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:11:25,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:26,043 INFO L225 Difference]: With dead ends: 30100 [2022-11-21 17:11:26,043 INFO L226 Difference]: Without dead ends: 18304 [2022-11-21 17:11:26,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:11:26,077 INFO L413 NwaCegarLoop]: 4266 mSDtfsCounter, 5112 mSDsluCounter, 16796 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 21062 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:26,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5132 Valid, 21062 Invalid, 1883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:11:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18304 states. [2022-11-21 17:11:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18304 to 13937. [2022-11-21 17:11:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13937 states, 13005 states have (on average 1.6162245290272972) internal successors, (21019), 13040 states have internal predecessors, (21019), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-11-21 17:11:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13937 states to 13937 states and 22692 transitions. [2022-11-21 17:11:28,433 INFO L78 Accepts]: Start accepts. Automaton has 13937 states and 22692 transitions. Word has length 179 [2022-11-21 17:11:28,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:28,434 INFO L495 AbstractCegarLoop]: Abstraction has 13937 states and 22692 transitions. [2022-11-21 17:11:28,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 13937 states and 22692 transitions. [2022-11-21 17:11:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:11:28,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:28,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:28,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:11:28,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:28,508 INFO L85 PathProgramCache]: Analyzing trace with hash 610481530, now seen corresponding path program 1 times [2022-11-21 17:11:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:28,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668933041] [2022-11-21 17:11:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:28,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:11:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:11:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:11:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:11:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:11:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:28,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:28,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668933041] [2022-11-21 17:11:28,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668933041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:28,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:28,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703637184] [2022-11-21 17:11:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:11:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:11:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:11:28,804 INFO L87 Difference]: Start difference. First operand 13937 states and 22692 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:38,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:38,442 INFO L93 Difference]: Finished difference Result 45037 states and 72769 transitions. [2022-11-21 17:11:38,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:38,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:38,564 INFO L225 Difference]: With dead ends: 45037 [2022-11-21 17:11:38,564 INFO L226 Difference]: Without dead ends: 33241 [2022-11-21 17:11:38,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:38,597 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5551 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3507 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5570 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:38,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5570 Valid, 22312 Invalid, 3576 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3507 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 17:11:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33241 states. [2022-11-21 17:11:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33241 to 25435. [2022-11-21 17:11:42,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25435 states, 23607 states have (on average 1.5927055534375396) internal successors, (37599), 23674 states have internal predecessors, (37599), 1372 states have call successors, (1372), 391 states have call predecessors, (1372), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-11-21 17:11:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25435 states to 25435 states and 41134 transitions. [2022-11-21 17:11:42,578 INFO L78 Accepts]: Start accepts. Automaton has 25435 states and 41134 transitions. Word has length 179 [2022-11-21 17:11:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:42,578 INFO L495 AbstractCegarLoop]: Abstraction has 25435 states and 41134 transitions. [2022-11-21 17:11:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 25435 states and 41134 transitions. [2022-11-21 17:11:42,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:11:42,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:42,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:42,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:11:42,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 345834040, now seen corresponding path program 1 times [2022-11-21 17:11:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:42,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69045767] [2022-11-21 17:11:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:42,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:11:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:11:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:11:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:11:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:11:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:11:42,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:42,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69045767] [2022-11-21 17:11:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69045767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:42,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:42,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:11:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817592482] [2022-11-21 17:11:42,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:11:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:42,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:11:42,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:11:42,899 INFO L87 Difference]: Start difference. First operand 25435 states and 41134 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:11:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:59,001 INFO L93 Difference]: Finished difference Result 86917 states and 140729 transitions. [2022-11-21 17:11:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:59,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:11:59,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:59,404 INFO L225 Difference]: With dead ends: 86917 [2022-11-21 17:11:59,404 INFO L226 Difference]: Without dead ends: 63623 [2022-11-21 17:11:59,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:11:59,491 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5550 mSDsluCounter, 17784 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5569 SdHoareTripleChecker+Valid, 22312 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:59,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5569 Valid, 22312 Invalid, 3563 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [69 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 17:11:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63623 states. [2022-11-21 17:12:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63623 to 48492. [2022-11-21 17:12:07,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48492 states, 44872 states have (on average 1.5789133535389552) internal successors, (70849), 45003 states have internal predecessors, (70849), 2716 states have call successors, (2716), 775 states have call predecessors, (2716), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-11-21 17:12:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48492 states to 48492 states and 78594 transitions. [2022-11-21 17:12:07,856 INFO L78 Accepts]: Start accepts. Automaton has 48492 states and 78594 transitions. Word has length 179 [2022-11-21 17:12:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:07,857 INFO L495 AbstractCegarLoop]: Abstraction has 48492 states and 78594 transitions. [2022-11-21 17:12:07,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:12:07,857 INFO L276 IsEmpty]: Start isEmpty. Operand 48492 states and 78594 transitions. [2022-11-21 17:12:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:12:07,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:07,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:07,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:12:07,888 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:07,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2018007622, now seen corresponding path program 1 times [2022-11-21 17:12:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:07,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70738962] [2022-11-21 17:12:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:07,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:12:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:12:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:12:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:12:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:12:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:08,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:08,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:08,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70738962] [2022-11-21 17:12:08,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70738962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:08,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:08,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:12:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643056031] [2022-11-21 17:12:08,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:08,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:12:08,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:08,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:12:08,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:12:08,204 INFO L87 Difference]: Start difference. First operand 48492 states and 78594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)