./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/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_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/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_ed9f4376-e359-48f9-b10c-316cedc72b09/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 de654b8e722eb26a01715e643a442ee96e677f28cab0e875133e4d1d7edb214d --- 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 13:58:46,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:58:46,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:58:46,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:58:46,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:58:46,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:58:46,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:58:46,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:58:46,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:58:46,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:58:46,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:58:46,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:58:46,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:58:46,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:58:46,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:58:46,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:58:46,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:58:46,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:58:46,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:58:46,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:58:46,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:58:46,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:58:46,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:58:46,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:58:46,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:58:46,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:58:46,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:58:46,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:58:46,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:58:46,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:58:46,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:58:46,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:58:46,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:58:46,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:58:46,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:58:46,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:58:46,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:58:46,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:58:46,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:58:46,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:58:46,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:58:46,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:58:46,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:58:46,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:58:46,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:58:46,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:58:46,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:58:46,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:58:46,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:58:46,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:58:46,485 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:58:46,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:58:46,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:58:46,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:58:46,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:58:46,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:58:46,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:58:46,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:58:46,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:58:46,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:58:46,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:58:46,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:58:46,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:58:46,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:58:46,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:58:46,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:58:46,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:46,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:58:46,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:58:46,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:58:46,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:58:46,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:58:46,492 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:58:46,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:58:46,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:58:46,492 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_ed9f4376-e359-48f9-b10c-316cedc72b09/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de654b8e722eb26a01715e643a442ee96e677f28cab0e875133e4d1d7edb214d [2022-11-21 13:58:46,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:58:46,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:58:46,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:58:46,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:58:46,867 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:58:46,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 13:58:50,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:58:50,281 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:58:50,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 13:58:50,303 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/data/fe1245e59/264ce3342f0844118d8a5870ca33c67f/FLAG3a389dc36 [2022-11-21 13:58:50,320 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/data/fe1245e59/264ce3342f0844118d8a5870ca33c67f [2022-11-21 13:58:50,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:58:50,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:58:50,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:50,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:58:50,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:58:50,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@331cf52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50, skipping insertion in model container [2022-11-21 13:58:50,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:58:50,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:58:50,710 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_ed9f4376-e359-48f9-b10c-316cedc72b09/sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2022-11-21 13:58:50,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:50,729 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:58:50,796 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_ed9f4376-e359-48f9-b10c-316cedc72b09/sv-benchmarks/c/seq-mthreaded/pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c[20121,20134] [2022-11-21 13:58:50,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:50,814 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:58:50,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50 WrapperNode [2022-11-21 13:58:50,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:50,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:58:50,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:58:50,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:58:50,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,878 INFO L138 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 421 [2022-11-21 13:58:50,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:58:50,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:58:50,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:58:50,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:58:50,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,939 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:58:50,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:58:50,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:58:50,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:58:50,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (1/1) ... [2022-11-21 13:58:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:50,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:58:51,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:58:51,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed9f4376-e359-48f9-b10c-316cedc72b09/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:58:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:58:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:58:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:58:51,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:58:51,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:58:51,242 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:58:52,038 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:58:52,051 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:58:52,052 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:58:52,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:52 BoogieIcfgContainer [2022-11-21 13:58:52,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:58:52,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:58:52,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:58:52,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:58:52,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:58:50" (1/3) ... [2022-11-21 13:58:52,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a8389b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:52, skipping insertion in model container [2022-11-21 13:58:52,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:50" (2/3) ... [2022-11-21 13:58:52,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a8389b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:52, skipping insertion in model container [2022-11-21 13:58:52,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:52" (3/3) ... [2022-11-21 13:58:52,075 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 13:58:52,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:58:52,095 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:58:52,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:58:52,155 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;@7f082242, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:58:52,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:58:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 1.7857142857142858) internal successors, (200), 113 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 13:58:52,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:52,171 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] [2022-11-21 13:58:52,172 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:52,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2041770159, now seen corresponding path program 1 times [2022-11-21 13:58:52,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:52,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552466903] [2022-11-21 13:58:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:52,448 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 13:58:52,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552466903] [2022-11-21 13:58:52,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552466903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:52,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:52,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:58:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394256715] [2022-11-21 13:58:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:52,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:58:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:58:52,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:58:52,508 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 1.7857142857142858) internal successors, (200), 113 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:52,535 INFO L93 Difference]: Finished difference Result 169 states and 291 transitions. [2022-11-21 13:58:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:58:52,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-21 13:58:52,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:52,548 INFO L225 Difference]: With dead ends: 169 [2022-11-21 13:58:52,548 INFO L226 Difference]: Without dead ends: 110 [2022-11-21 13:58:52,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:58:52,555 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:52,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-21 13:58:52,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-21 13:58:52,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.7706422018348624) internal successors, (193), 109 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 193 transitions. [2022-11-21 13:58:52,604 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 193 transitions. Word has length 27 [2022-11-21 13:58:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:52,604 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 193 transitions. [2022-11-21 13:58:52,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:52,605 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 193 transitions. [2022-11-21 13:58:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 13:58:52,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:52,607 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] [2022-11-21 13:58:52,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:58:52,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:52,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1822915441, now seen corresponding path program 1 times [2022-11-21 13:58:52,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:52,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499388808] [2022-11-21 13:58:52,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:53,008 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 13:58:53,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:53,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499388808] [2022-11-21 13:58:53,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499388808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:53,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:53,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:58:53,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744941541] [2022-11-21 13:58:53,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:53,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:58:53,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:53,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:58:53,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:58:53,015 INFO L87 Difference]: Start difference. First operand 110 states and 193 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:53,138 INFO L93 Difference]: Finished difference Result 168 states and 284 transitions. [2022-11-21 13:58:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:58:53,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-21 13:58:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:53,140 INFO L225 Difference]: With dead ends: 168 [2022-11-21 13:58:53,140 INFO L226 Difference]: Without dead ends: 110 [2022-11-21 13:58:53,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:58:53,142 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 3 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:53,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 711 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:58:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-21 13:58:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-11-21 13:58:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.311926605504587) internal successors, (143), 109 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2022-11-21 13:58:53,151 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 27 [2022-11-21 13:58:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:53,152 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2022-11-21 13:58:53,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2022-11-21 13:58:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-21 13:58:53,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:53,154 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] [2022-11-21 13:58:53,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:58:53,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:53,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2031087693, now seen corresponding path program 1 times [2022-11-21 13:58:53,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265922451] [2022-11-21 13:58:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:53,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:53,518 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 13:58:53,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:53,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265922451] [2022-11-21 13:58:53,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265922451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:53,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:53,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:58:53,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81818274] [2022-11-21 13:58:53,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:53,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:58:53,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:53,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:58:53,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:58:53,524 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:54,157 INFO L93 Difference]: Finished difference Result 866 states and 1361 transitions. [2022-11-21 13:58:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:58:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-21 13:58:54,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:54,169 INFO L225 Difference]: With dead ends: 866 [2022-11-21 13:58:54,169 INFO L226 Difference]: Without dead ends: 812 [2022-11-21 13:58:54,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:58:54,179 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1505 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:54,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 3069 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:58:54,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-21 13:58:54,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 162. [2022-11-21 13:58:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.4099378881987579) internal successors, (227), 161 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 227 transitions. [2022-11-21 13:58:54,218 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 227 transitions. Word has length 76 [2022-11-21 13:58:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:54,218 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 227 transitions. [2022-11-21 13:58:54,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 227 transitions. [2022-11-21 13:58:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 13:58:54,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:54,221 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] [2022-11-21 13:58:54,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:58:54,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:54,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 919155139, now seen corresponding path program 1 times [2022-11-21 13:58:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:54,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911436194] [2022-11-21 13:58:54,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:54,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:54,406 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 13:58:54,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:54,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911436194] [2022-11-21 13:58:54,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911436194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:54,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:54,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:54,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351250500] [2022-11-21 13:58:54,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:54,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:54,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:54,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:54,410 INFO L87 Difference]: Start difference. First operand 162 states and 227 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:54,460 INFO L93 Difference]: Finished difference Result 363 states and 550 transitions. [2022-11-21 13:58:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-21 13:58:54,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:54,462 INFO L225 Difference]: With dead ends: 363 [2022-11-21 13:58:54,462 INFO L226 Difference]: Without dead ends: 257 [2022-11-21 13:58:54,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:54,464 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:54,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-21 13:58:54,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2022-11-21 13:58:54,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.4763779527559056) internal successors, (375), 254 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 375 transitions. [2022-11-21 13:58:54,498 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 375 transitions. Word has length 78 [2022-11-21 13:58:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:54,499 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 375 transitions. [2022-11-21 13:58:54,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 375 transitions. [2022-11-21 13:58:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 13:58:54,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:54,502 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] [2022-11-21 13:58:54,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:58:54,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:54,503 INFO L85 PathProgramCache]: Analyzing trace with hash 985648651, now seen corresponding path program 1 times [2022-11-21 13:58:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:54,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086378084] [2022-11-21 13:58:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:55,093 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 13:58:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:55,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086378084] [2022-11-21 13:58:55,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086378084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:55,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:55,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:58:55,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654954728] [2022-11-21 13:58:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:55,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:58:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:55,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:58:55,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:58:55,098 INFO L87 Difference]: Start difference. First operand 255 states and 375 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:55,543 INFO L93 Difference]: Finished difference Result 456 states and 695 transitions. [2022-11-21 13:58:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:58:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-21 13:58:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:55,546 INFO L225 Difference]: With dead ends: 456 [2022-11-21 13:58:55,546 INFO L226 Difference]: Without dead ends: 257 [2022-11-21 13:58:55,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:58:55,548 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 450 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:55,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 641 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:58:55,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-21 13:58:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2022-11-21 13:58:55,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.468503937007874) internal successors, (373), 254 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 373 transitions. [2022-11-21 13:58:55,578 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 373 transitions. Word has length 78 [2022-11-21 13:58:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:55,578 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 373 transitions. [2022-11-21 13:58:55,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 9 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 373 transitions. [2022-11-21 13:58:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 13:58:55,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:55,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:55,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:58:55,581 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:55,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:55,582 INFO L85 PathProgramCache]: Analyzing trace with hash 75614193, now seen corresponding path program 1 times [2022-11-21 13:58:55,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:55,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314959235] [2022-11-21 13:58:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:55,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:55,960 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 13:58:55,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314959235] [2022-11-21 13:58:55,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314959235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:55,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:55,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:58:55,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921984277] [2022-11-21 13:58:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:55,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:58:55,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:55,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:58:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:58:55,963 INFO L87 Difference]: Start difference. First operand 255 states and 373 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:56,151 INFO L93 Difference]: Finished difference Result 451 states and 680 transitions. [2022-11-21 13:58:56,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:58:56,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-21 13:58:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:56,154 INFO L225 Difference]: With dead ends: 451 [2022-11-21 13:58:56,155 INFO L226 Difference]: Without dead ends: 449 [2022-11-21 13:58:56,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:58:56,158 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 514 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:56,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 793 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-21 13:58:56,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 261. [2022-11-21 13:58:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.4538461538461538) internal successors, (378), 260 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 378 transitions. [2022-11-21 13:58:56,209 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 378 transitions. Word has length 79 [2022-11-21 13:58:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:56,210 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 378 transitions. [2022-11-21 13:58:56,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 378 transitions. [2022-11-21 13:58:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:56,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:56,213 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] [2022-11-21 13:58:56,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:58:56,214 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:56,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 612502699, now seen corresponding path program 1 times [2022-11-21 13:58:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:56,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830459560] [2022-11-21 13:58:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:56,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:56,300 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 13:58:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:56,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830459560] [2022-11-21 13:58:56,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830459560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:56,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:56,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170214386] [2022-11-21 13:58:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:56,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:56,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:56,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:56,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:56,303 INFO L87 Difference]: Start difference. First operand 261 states and 378 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:56,362 INFO L93 Difference]: Finished difference Result 479 states and 719 transitions. [2022-11-21 13:58:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:56,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:58:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:56,365 INFO L225 Difference]: With dead ends: 479 [2022-11-21 13:58:56,365 INFO L226 Difference]: Without dead ends: 367 [2022-11-21 13:58:56,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:56,369 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 77 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:56,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-21 13:58:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-11-21 13:58:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.4807692307692308) internal successors, (539), 364 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 539 transitions. [2022-11-21 13:58:56,422 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 539 transitions. Word has length 80 [2022-11-21 13:58:56,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:56,423 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 539 transitions. [2022-11-21 13:58:56,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,424 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 539 transitions. [2022-11-21 13:58:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:56,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:56,428 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] [2022-11-21 13:58:56,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:58:56,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:56,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1577480533, now seen corresponding path program 1 times [2022-11-21 13:58:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:56,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837796947] [2022-11-21 13:58:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:56,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:56,508 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 13:58:56,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:56,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837796947] [2022-11-21 13:58:56,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837796947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:56,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:56,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:56,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79182861] [2022-11-21 13:58:56,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:56,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:56,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:56,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:56,511 INFO L87 Difference]: Start difference. First operand 365 states and 539 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:56,630 INFO L93 Difference]: Finished difference Result 955 states and 1459 transitions. [2022-11-21 13:58:56,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:56,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:58:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:56,634 INFO L225 Difference]: With dead ends: 955 [2022-11-21 13:58:56,634 INFO L226 Difference]: Without dead ends: 648 [2022-11-21 13:58:56,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:56,637 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 73 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:56,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:56,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-21 13:58:56,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2022-11-21 13:58:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.5054263565891473) internal successors, (971), 645 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 971 transitions. [2022-11-21 13:58:56,739 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 971 transitions. Word has length 80 [2022-11-21 13:58:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:56,740 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 971 transitions. [2022-11-21 13:58:56,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:56,740 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 971 transitions. [2022-11-21 13:58:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:56,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:56,745 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] [2022-11-21 13:58:56,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:58:56,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:56,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1313624149, now seen corresponding path program 1 times [2022-11-21 13:58:56,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:56,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650142114] [2022-11-21 13:58:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:56,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:56,819 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 13:58:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:56,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650142114] [2022-11-21 13:58:56,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650142114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:56,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:56,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:56,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979083057] [2022-11-21 13:58:56,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:56,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:56,822 INFO L87 Difference]: Start difference. First operand 646 states and 971 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:57,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:57,038 INFO L93 Difference]: Finished difference Result 1774 states and 2713 transitions. [2022-11-21 13:58:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:57,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:58:57,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:57,044 INFO L225 Difference]: With dead ends: 1774 [2022-11-21 13:58:57,044 INFO L226 Difference]: Without dead ends: 1186 [2022-11-21 13:58:57,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:57,048 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 71 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:57,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 305 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:57,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-11-21 13:58:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1184. [2022-11-21 13:58:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.5105663567202028) internal successors, (1787), 1183 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1787 transitions. [2022-11-21 13:58:57,261 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1787 transitions. Word has length 80 [2022-11-21 13:58:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:57,262 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1787 transitions. [2022-11-21 13:58:57,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1787 transitions. [2022-11-21 13:58:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:57,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:57,263 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] [2022-11-21 13:58:57,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:58:57,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:57,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2004136363, now seen corresponding path program 1 times [2022-11-21 13:58:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:57,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142148474] [2022-11-21 13:58:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:57,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:57,339 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 13:58:57,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:57,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142148474] [2022-11-21 13:58:57,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142148474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:57,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:57,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649843172] [2022-11-21 13:58:57,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:57,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:57,341 INFO L87 Difference]: Start difference. First operand 1184 states and 1787 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:57,756 INFO L93 Difference]: Finished difference Result 3340 states and 5077 transitions. [2022-11-21 13:58:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:57,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:58:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:57,766 INFO L225 Difference]: With dead ends: 3340 [2022-11-21 13:58:57,766 INFO L226 Difference]: Without dead ends: 2214 [2022-11-21 13:58:57,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:57,769 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 67 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:57,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-21 13:58:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 2212. [2022-11-21 13:58:58,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2211 states have (on average 1.5029398462234282) internal successors, (3323), 2211 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 3323 transitions. [2022-11-21 13:58:58,127 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 3323 transitions. Word has length 80 [2022-11-21 13:58:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:58,127 INFO L495 AbstractCegarLoop]: Abstraction has 2212 states and 3323 transitions. [2022-11-21 13:58:58,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 3323 transitions. [2022-11-21 13:58:58,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:58,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:58,128 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] [2022-11-21 13:58:58,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:58:58,129 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:58,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:58,129 INFO L85 PathProgramCache]: Analyzing trace with hash -509898069, now seen corresponding path program 1 times [2022-11-21 13:58:58,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:58,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159542404] [2022-11-21 13:58:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:58,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:58,239 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 13:58:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159542404] [2022-11-21 13:58:58,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159542404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:58,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:58,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:58,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686761085] [2022-11-21 13:58:58,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:58,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:58,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:58,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:58,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:58,241 INFO L87 Difference]: Start difference. First operand 2212 states and 3323 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:58,960 INFO L93 Difference]: Finished difference Result 6328 states and 9517 transitions. [2022-11-21 13:58:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:58:58,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:58,975 INFO L225 Difference]: With dead ends: 6328 [2022-11-21 13:58:58,976 INFO L226 Difference]: Without dead ends: 4174 [2022-11-21 13:58:58,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:58,982 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 65 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:58,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:58:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2022-11-21 13:58:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 4172. [2022-11-21 13:58:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4172 states, 4171 states have (on average 1.4871733397266842) internal successors, (6203), 4171 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4172 states to 4172 states and 6203 transitions. [2022-11-21 13:58:59,661 INFO L78 Accepts]: Start accepts. Automaton has 4172 states and 6203 transitions. Word has length 80 [2022-11-21 13:58:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:59,662 INFO L495 AbstractCegarLoop]: Abstraction has 4172 states and 6203 transitions. [2022-11-21 13:58:59,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:58:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4172 states and 6203 transitions. [2022-11-21 13:58:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:58:59,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:59,663 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] [2022-11-21 13:58:59,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:58:59,664 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash -75362133, now seen corresponding path program 1 times [2022-11-21 13:58:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:59,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535719647] [2022-11-21 13:58:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:59,734 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 13:58:59,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:59,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535719647] [2022-11-21 13:58:59,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535719647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:59,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:59,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730117842] [2022-11-21 13:58:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:59,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:59,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:59,736 INFO L87 Difference]: Start difference. First operand 4172 states and 6203 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:01,051 INFO L93 Difference]: Finished difference Result 12016 states and 17821 transitions. [2022-11-21 13:59:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:59:01,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:01,079 INFO L225 Difference]: With dead ends: 12016 [2022-11-21 13:59:01,080 INFO L226 Difference]: Without dead ends: 7902 [2022-11-21 13:59:01,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:01,086 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:01,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 307 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2022-11-21 13:59:02,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 7900. [2022-11-21 13:59:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7900 states, 7899 states have (on average 1.4658817571844538) internal successors, (11579), 7899 states have internal predecessors, (11579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7900 states to 7900 states and 11579 transitions. [2022-11-21 13:59:02,229 INFO L78 Accepts]: Start accepts. Automaton has 7900 states and 11579 transitions. Word has length 80 [2022-11-21 13:59:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:02,230 INFO L495 AbstractCegarLoop]: Abstraction has 7900 states and 11579 transitions. [2022-11-21 13:59:02,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7900 states and 11579 transitions. [2022-11-21 13:59:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-21 13:59:02,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:02,231 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] [2022-11-21 13:59:02,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:59:02,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1740395093, now seen corresponding path program 1 times [2022-11-21 13:59:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:02,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546119907] [2022-11-21 13:59:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:02,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:02,339 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 13:59:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:02,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546119907] [2022-11-21 13:59:02,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546119907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:02,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:02,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:59:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218000195] [2022-11-21 13:59:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:02,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:59:02,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:59:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:02,343 INFO L87 Difference]: Start difference. First operand 7900 states and 11579 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:04,517 INFO L93 Difference]: Finished difference Result 22816 states and 33277 transitions. [2022-11-21 13:59:04,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:59:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-21 13:59:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:04,583 INFO L225 Difference]: With dead ends: 22816 [2022-11-21 13:59:04,583 INFO L226 Difference]: Without dead ends: 14974 [2022-11-21 13:59:04,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:59:04,594 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 75 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:04,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 309 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:59:04,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14974 states. [2022-11-21 13:59:06,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14974 to 14972. [2022-11-21 13:59:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14972 states, 14971 states have (on average 1.4403179480328636) internal successors, (21563), 14971 states have internal predecessors, (21563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14972 states to 14972 states and 21563 transitions. [2022-11-21 13:59:06,874 INFO L78 Accepts]: Start accepts. Automaton has 14972 states and 21563 transitions. Word has length 80 [2022-11-21 13:59:06,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:06,874 INFO L495 AbstractCegarLoop]: Abstraction has 14972 states and 21563 transitions. [2022-11-21 13:59:06,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:06,875 INFO L276 IsEmpty]: Start isEmpty. Operand 14972 states and 21563 transitions. [2022-11-21 13:59:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 13:59:06,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:06,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:06,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:59:06,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash -751589846, now seen corresponding path program 1 times [2022-11-21 13:59:06,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:06,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252761917] [2022-11-21 13:59:06,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:06,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:59:07,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:07,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252761917] [2022-11-21 13:59:07,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252761917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:07,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:07,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:59:07,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524096347] [2022-11-21 13:59:07,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:59:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:59:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:59:07,262 INFO L87 Difference]: Start difference. First operand 14972 states and 21563 transitions. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:19,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:19,912 INFO L93 Difference]: Finished difference Result 118028 states and 170051 transitions. [2022-11-21 13:59:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:59:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-21 13:59:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:20,267 INFO L225 Difference]: With dead ends: 118028 [2022-11-21 13:59:20,267 INFO L226 Difference]: Without dead ends: 107530 [2022-11-21 13:59:20,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:59:20,295 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1235 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:20,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 1480 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:59:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107530 states. [2022-11-21 13:59:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107530 to 27708. [2022-11-21 13:59:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27708 states, 27707 states have (on average 1.4342584906341358) internal successors, (39739), 27707 states have internal predecessors, (39739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27708 states to 27708 states and 39739 transitions. [2022-11-21 13:59:25,436 INFO L78 Accepts]: Start accepts. Automaton has 27708 states and 39739 transitions. Word has length 103 [2022-11-21 13:59:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:25,436 INFO L495 AbstractCegarLoop]: Abstraction has 27708 states and 39739 transitions. [2022-11-21 13:59:25,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:59:25,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27708 states and 39739 transitions. [2022-11-21 13:59:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 13:59:25,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:25,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:59:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:59:25,445 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:59:25,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1353394218, now seen corresponding path program 1 times [2022-11-21 13:59:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:59:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829477231] [2022-11-21 13:59:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:59:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:59:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:59:25,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829477231] [2022-11-21 13:59:25,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829477231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:59:25,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:59:25,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:59:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217137534] [2022-11-21 13:59:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:59:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:59:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:59:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:59:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:59:25,720 INFO L87 Difference]: Start difference. First operand 27708 states and 39739 transitions. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)