./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:00:26,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:00:26,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:00:26,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:00:26,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:00:26,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:00:26,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:00:26,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:00:26,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:00:26,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:00:26,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:00:26,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:00:26,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:00:26,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:00:26,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:00:26,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:00:26,380 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:00:26,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:00:26,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:00:26,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:00:26,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:00:26,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:00:26,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:00:26,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:00:26,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:00:26,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:00:26,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:00:26,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:00:26,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:00:26,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:00:26,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:00:26,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:00:26,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:00:26,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:00:26,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:00:26,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:00:26,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:00:26,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:00:26,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:00:26,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:00:26,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:00:26,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:00:26,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:00:26,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:00:26,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:00:26,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:00:26,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:00:26,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:00:26,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:00:26,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:00:26,479 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:00:26,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:00:26,481 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:00:26,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:00:26,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:00:26,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:00:26,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:00:26,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:00:26,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:00:26,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:00:26,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:00:26,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:00:26,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:00:26,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:00:26,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:00:26,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:00:26,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:00:26,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:00:26,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:00:26,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:00:26,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:00:26,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:00:26,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:00:26,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:00:26,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:00:26,489 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_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702e32bde69e0b1ece4e7732f8bcc90ed2c9bf4432a02312b63f0298ad23fbb9 [2022-11-16 11:00:26,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:00:26,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:00:26,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:00:26,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:00:26,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:00:26,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2022-11-16 11:00:26,986 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/data/8a95c0605/0e22ad9fb240456aa668b7e62839a2c6/FLAGa840f445d [2022-11-16 11:00:27,964 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:00:27,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/sv-benchmarks/c/eca-rers2012/Problem12_label20.c [2022-11-16 11:00:28,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/data/8a95c0605/0e22ad9fb240456aa668b7e62839a2c6/FLAGa840f445d [2022-11-16 11:00:28,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/data/8a95c0605/0e22ad9fb240456aa668b7e62839a2c6 [2022-11-16 11:00:28,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:00:28,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:00:28,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:00:28,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:00:28,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:00:28,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:00:28" (1/1) ... [2022-11-16 11:00:28,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23441811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:28, skipping insertion in model container [2022-11-16 11:00:28,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:00:28" (1/1) ... [2022-11-16 11:00:28,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:00:28,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:00:28,960 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/sv-benchmarks/c/eca-rers2012/Problem12_label20.c[1898,1911] [2022-11-16 11:00:30,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:00:30,108 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:00:30,141 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/sv-benchmarks/c/eca-rers2012/Problem12_label20.c[1898,1911] [2022-11-16 11:00:30,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:00:30,849 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:00:30,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30 WrapperNode [2022-11-16 11:00:30,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:00:30,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:00:30,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:00:30,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:00:30,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:30,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,368 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-16 11:00:31,368 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:00:31,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:00:31,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:00:31,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:00:31,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:00:31,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:00:31,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:00:31,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:00:31,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (1/1) ... [2022-11-16 11:00:31,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:00:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:00:32,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:00:32,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:00:32,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:00:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:00:32,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:00:32,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:00:32,284 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:00:32,286 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:00:38,246 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:00:38,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:00:38,272 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:00:38,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:00:38 BoogieIcfgContainer [2022-11-16 11:00:38,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:00:38,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:00:38,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:00:38,284 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:00:38,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:00:28" (1/3) ... [2022-11-16 11:00:38,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709e2d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:00:38, skipping insertion in model container [2022-11-16 11:00:38,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:00:30" (2/3) ... [2022-11-16 11:00:38,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709e2d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:00:38, skipping insertion in model container [2022-11-16 11:00:38,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:00:38" (3/3) ... [2022-11-16 11:00:38,288 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2022-11-16 11:00:38,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:00:38,310 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:00:38,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:00:38,418 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;@51fb8c92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:00:38,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:00:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-11-16 11:00:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:00:38,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:38,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:38,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash -569068670, now seen corresponding path program 1 times [2022-11-16 11:00:38,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:38,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604048791] [2022-11-16 11:00:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:38,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:38,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604048791] [2022-11-16 11:00:38,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604048791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:38,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:38,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:00:38,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052068128] [2022-11-16 11:00:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:38,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:00:38,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:00:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:00:38,828 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-16 11:00:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:47,722 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2022-11-16 11:00:47,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:00:47,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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 12 [2022-11-16 11:00:47,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:47,767 INFO L225 Difference]: With dead ends: 3155 [2022-11-16 11:00:47,767 INFO L226 Difference]: Without dead ends: 2265 [2022-11-16 11:00:47,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:00:47,785 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2472 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:47,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2472 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-16 11:00:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-11-16 11:00:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2022-11-16 11:00:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 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) [2022-11-16 11:00:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2022-11-16 11:00:47,960 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 12 [2022-11-16 11:00:47,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:47,961 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2022-11-16 11:00:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-16 11:00:47,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2022-11-16 11:00:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-16 11:00:47,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:47,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:47,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:00:47,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash 478449383, now seen corresponding path program 1 times [2022-11-16 11:00:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:47,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82632306] [2022-11-16 11:00:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:00:48,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:48,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82632306] [2022-11-16 11:00:48,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82632306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:48,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:48,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:00:48,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672727363] [2022-11-16 11:00:48,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:00:48,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:48,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:00:48,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:00:48,596 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-11-16 11:00:54,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:54,781 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2022-11-16 11:00:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:00:54,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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 152 [2022-11-16 11:00:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:54,796 INFO L225 Difference]: With dead ends: 6051 [2022-11-16 11:00:54,796 INFO L226 Difference]: Without dead ends: 3759 [2022-11-16 11:00:54,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:00:54,801 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:54,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:00:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-16 11:00:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2022-11-16 11:00:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 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) [2022-11-16 11:00:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2022-11-16 11:00:54,888 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 152 [2022-11-16 11:00:54,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:54,892 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2022-11-16 11:00:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-11-16 11:00:54,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2022-11-16 11:00:54,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-16 11:00:54,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:54,908 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:54,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:00:54,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:54,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1010929610, now seen corresponding path program 1 times [2022-11-16 11:00:54,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:54,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054984874] [2022-11-16 11:00:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:00:55,426 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-16 11:00:55,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:00:55,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054984874] [2022-11-16 11:00:55,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054984874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:00:55,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:00:55,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:00:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498921381] [2022-11-16 11:00:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:00:55,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:00:55,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:00:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:00:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:55,430 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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) [2022-11-16 11:00:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:00:59,470 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2022-11-16 11:00:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:00:59,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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 222 [2022-11-16 11:00:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:00:59,498 INFO L225 Difference]: With dead ends: 10520 [2022-11-16 11:00:59,499 INFO L226 Difference]: Without dead ends: 6763 [2022-11-16 11:00:59,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:00:59,515 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:00:59,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:00:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-16 11:00:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2022-11-16 11:00:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 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) [2022-11-16 11:00:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2022-11-16 11:00:59,670 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 222 [2022-11-16 11:00:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:00:59,673 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2022-11-16 11:00:59,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 2 states have internal predecessors, (155), 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) [2022-11-16 11:00:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2022-11-16 11:00:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-16 11:00:59,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:00:59,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:00:59,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:00:59,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:00:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:00:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1499821391, now seen corresponding path program 1 times [2022-11-16 11:00:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:00:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47705995] [2022-11-16 11:00:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:00:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:00:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 11:01:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:00,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47705995] [2022-11-16 11:01:00,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47705995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:01:00,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237913476] [2022-11-16 11:01:00,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:00,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:00,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:01:00,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:01:00,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:01:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:00,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:01:00,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:01:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:01:00,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:01:00,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237913476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:00,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:01:00,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:01:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787159303] [2022-11-16 11:01:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:00,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:01:00,789 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-11-16 11:01:04,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:04,957 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2022-11-16 11:01:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 235 [2022-11-16 11:01:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:04,991 INFO L225 Difference]: With dead ends: 15026 [2022-11-16 11:01:04,992 INFO L226 Difference]: Without dead ends: 9016 [2022-11-16 11:01:04,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:01:05,000 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:05,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:01:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2022-11-16 11:01:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2022-11-16 11:01:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 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) [2022-11-16 11:01:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2022-11-16 11:01:05,204 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 235 [2022-11-16 11:01:05,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:05,206 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2022-11-16 11:01:05,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2022-11-16 11:01:05,207 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2022-11-16 11:01:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-11-16 11:01:05,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:05,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:05,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:01:05,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:01:05,429 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:05,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1043669525, now seen corresponding path program 1 times [2022-11-16 11:01:05,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:05,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753308942] [2022-11-16 11:01:05,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:05,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-16 11:01:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753308942] [2022-11-16 11:01:05,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753308942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:05,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:05,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:05,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665841647] [2022-11-16 11:01:05,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:05,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:05,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:05,747 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-11-16 11:01:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:10,452 INFO L93 Difference]: Finished difference Result 25540 states and 32713 transitions. [2022-11-16 11:01:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 252 [2022-11-16 11:01:10,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:10,509 INFO L225 Difference]: With dead ends: 25540 [2022-11-16 11:01:10,510 INFO L226 Difference]: Without dead ends: 16526 [2022-11-16 11:01:10,521 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 [2022-11-16 11:01:10,522 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 746 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:10,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1325 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 11:01:10,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16526 states. [2022-11-16 11:01:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16526 to 15775. [2022-11-16 11:01:10,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2523773297831875) internal successors, (19755), 15774 states have internal predecessors, (19755), 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) [2022-11-16 11:01:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 19755 transitions. [2022-11-16 11:01:10,895 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 19755 transitions. Word has length 252 [2022-11-16 11:01:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:10,896 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 19755 transitions. [2022-11-16 11:01:10,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2022-11-16 11:01:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 19755 transitions. [2022-11-16 11:01:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-16 11:01:10,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:10,903 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:01:10,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:10,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash -147603621, now seen corresponding path program 1 times [2022-11-16 11:01:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:10,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33649165] [2022-11-16 11:01:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:01:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:12,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33649165] [2022-11-16 11:01:12,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33649165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:12,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:12,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:12,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652732002] [2022-11-16 11:01:12,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:12,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:12,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:12,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:12,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:12,114 INFO L87 Difference]: Start difference. First operand 15775 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2022-11-16 11:01:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:16,600 INFO L93 Difference]: Finished difference Result 38307 states and 48288 transitions. [2022-11-16 11:01:16,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:16,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 301 [2022-11-16 11:01:16,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:16,650 INFO L225 Difference]: With dead ends: 38307 [2022-11-16 11:01:16,650 INFO L226 Difference]: Without dead ends: 22534 [2022-11-16 11:01:16,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:16,669 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 829 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1009 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1009 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:16,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 142 Invalid, 3046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1009 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-16 11:01:16,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-11-16 11:01:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2022-11-16 11:01:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2340567168153376) internal successors, (27807), 22533 states have internal predecessors, (27807), 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) [2022-11-16 11:01:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27807 transitions. [2022-11-16 11:01:17,032 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27807 transitions. Word has length 301 [2022-11-16 11:01:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:17,033 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 27807 transitions. [2022-11-16 11:01:17,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2022-11-16 11:01:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27807 transitions. [2022-11-16 11:01:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-16 11:01:17,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:17,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:01:17,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:17,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1068440000, now seen corresponding path program 1 times [2022-11-16 11:01:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:17,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411586386] [2022-11-16 11:01:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-16 11:01:17,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:17,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411586386] [2022-11-16 11:01:17,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411586386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:17,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:17,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:17,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291177161] [2022-11-16 11:01:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:17,427 INFO L87 Difference]: Start difference. First operand 22534 states and 27807 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2022-11-16 11:01:21,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:21,739 INFO L93 Difference]: Finished difference Result 45066 states and 55612 transitions. [2022-11-16 11:01:21,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:21,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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 306 [2022-11-16 11:01:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:21,782 INFO L225 Difference]: With dead ends: 45066 [2022-11-16 11:01:21,783 INFO L226 Difference]: Without dead ends: 22534 [2022-11-16 11:01:21,800 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 [2022-11-16 11:01:21,801 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 737 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:21,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 187 Invalid, 2945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:01:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22534 states. [2022-11-16 11:01:22,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22534 to 22534. [2022-11-16 11:01:22,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.2210091865264279) internal successors, (27513), 22533 states have internal predecessors, (27513), 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) [2022-11-16 11:01:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 27513 transitions. [2022-11-16 11:01:22,288 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 27513 transitions. Word has length 306 [2022-11-16 11:01:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:22,289 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 27513 transitions. [2022-11-16 11:01:22,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2022-11-16 11:01:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 27513 transitions. [2022-11-16 11:01:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-16 11:01:22,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:22,301 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:22,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:01:22,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:22,303 INFO L85 PathProgramCache]: Analyzing trace with hash -403408768, now seen corresponding path program 1 times [2022-11-16 11:01:22,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:22,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975187980] [2022-11-16 11:01:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 11:01:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:22,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975187980] [2022-11-16 11:01:22,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975187980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:22,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:22,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90642463] [2022-11-16 11:01:22,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:22,576 INFO L87 Difference]: Start difference. First operand 22534 states and 27513 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-11-16 11:01:27,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:27,372 INFO L93 Difference]: Finished difference Result 60837 states and 75395 transitions. [2022-11-16 11:01:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:27,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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 317 [2022-11-16 11:01:27,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:27,445 INFO L225 Difference]: With dead ends: 60837 [2022-11-16 11:01:27,445 INFO L226 Difference]: Without dead ends: 38305 [2022-11-16 11:01:27,464 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 [2022-11-16 11:01:27,465 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 721 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:27,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 425 Invalid, 2934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 11:01:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2022-11-16 11:01:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 37554. [2022-11-16 11:01:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37554 states, 37553 states have (on average 1.207679812531622) internal successors, (45352), 37553 states have internal predecessors, (45352), 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) [2022-11-16 11:01:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37554 states to 37554 states and 45352 transitions. [2022-11-16 11:01:28,122 INFO L78 Accepts]: Start accepts. Automaton has 37554 states and 45352 transitions. Word has length 317 [2022-11-16 11:01:28,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:28,123 INFO L495 AbstractCegarLoop]: Abstraction has 37554 states and 45352 transitions. [2022-11-16 11:01:28,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2022-11-16 11:01:28,123 INFO L276 IsEmpty]: Start isEmpty. Operand 37554 states and 45352 transitions. [2022-11-16 11:01:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2022-11-16 11:01:28,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:28,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:28,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:01:28,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:28,133 INFO L85 PathProgramCache]: Analyzing trace with hash 299768528, now seen corresponding path program 1 times [2022-11-16 11:01:28,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:28,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128922640] [2022-11-16 11:01:28,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:28,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-16 11:01:28,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:28,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128922640] [2022-11-16 11:01:28,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128922640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:28,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:28,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:28,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17703867] [2022-11-16 11:01:28,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:28,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:28,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:28,398 INFO L87 Difference]: Start difference. First operand 37554 states and 45352 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-11-16 11:01:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:32,938 INFO L93 Difference]: Finished difference Result 91628 states and 110979 transitions. [2022-11-16 11:01:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:32,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 343 [2022-11-16 11:01:32,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:33,011 INFO L225 Difference]: With dead ends: 91628 [2022-11-16 11:01:33,012 INFO L226 Difference]: Without dead ends: 54076 [2022-11-16 11:01:33,040 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 [2022-11-16 11:01:33,041 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 767 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:33,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 337 Invalid, 2888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:01:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54076 states. [2022-11-16 11:01:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54076 to 52574. [2022-11-16 11:01:33,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52574 states, 52573 states have (on average 1.199684248568657) internal successors, (63071), 52573 states have internal predecessors, (63071), 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) [2022-11-16 11:01:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52574 states to 52574 states and 63071 transitions. [2022-11-16 11:01:34,042 INFO L78 Accepts]: Start accepts. Automaton has 52574 states and 63071 transitions. Word has length 343 [2022-11-16 11:01:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:34,043 INFO L495 AbstractCegarLoop]: Abstraction has 52574 states and 63071 transitions. [2022-11-16 11:01:34,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-11-16 11:01:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 52574 states and 63071 transitions. [2022-11-16 11:01:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2022-11-16 11:01:34,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:34,053 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:01:34,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1802269368, now seen corresponding path program 1 times [2022-11-16 11:01:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:34,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521445256] [2022-11-16 11:01:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 319 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-11-16 11:01:34,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:34,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521445256] [2022-11-16 11:01:34,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521445256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:34,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:34,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643187679] [2022-11-16 11:01:34,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:34,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:34,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:34,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:34,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:34,642 INFO L87 Difference]: Start difference. First operand 52574 states and 63071 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-16 11:01:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:39,769 INFO L93 Difference]: Finished difference Result 120917 states and 145617 transitions. [2022-11-16 11:01:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:39,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 411 [2022-11-16 11:01:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:39,859 INFO L225 Difference]: With dead ends: 120917 [2022-11-16 11:01:39,860 INFO L226 Difference]: Without dead ends: 68345 [2022-11-16 11:01:39,892 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 [2022-11-16 11:01:39,893 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 695 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:39,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1266 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-16 11:01:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68345 states. [2022-11-16 11:01:40,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68345 to 67594. [2022-11-16 11:01:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67594 states, 67593 states have (on average 1.1709792434127795) internal successors, (79150), 67593 states have internal predecessors, (79150), 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) [2022-11-16 11:01:40,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67594 states to 67594 states and 79150 transitions. [2022-11-16 11:01:40,993 INFO L78 Accepts]: Start accepts. Automaton has 67594 states and 79150 transitions. Word has length 411 [2022-11-16 11:01:40,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:40,994 INFO L495 AbstractCegarLoop]: Abstraction has 67594 states and 79150 transitions. [2022-11-16 11:01:40,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-16 11:01:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 67594 states and 79150 transitions. [2022-11-16 11:01:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-11-16 11:01:41,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:41,003 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:01:41,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:01:41,004 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:41,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1640568435, now seen corresponding path program 1 times [2022-11-16 11:01:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:41,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875600909] [2022-11-16 11:01:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:01:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:41,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875600909] [2022-11-16 11:01:41,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875600909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:41,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:41,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527856394] [2022-11-16 11:01:41,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:41,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:41,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:41,698 INFO L87 Difference]: Start difference. First operand 67594 states and 79150 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-16 11:01:46,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:46,490 INFO L93 Difference]: Finished difference Result 160720 states and 186953 transitions. [2022-11-16 11:01:46,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:46,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 440 [2022-11-16 11:01:46,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:46,604 INFO L225 Difference]: With dead ends: 160720 [2022-11-16 11:01:46,604 INFO L226 Difference]: Without dead ends: 93128 [2022-11-16 11:01:46,632 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 [2022-11-16 11:01:46,633 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 756 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:46,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 327 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:01:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93128 states. [2022-11-16 11:01:47,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93128 to 87120. [2022-11-16 11:01:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.1396480675857161) internal successors, (99285), 87119 states have internal predecessors, (99285), 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) [2022-11-16 11:01:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 99285 transitions. [2022-11-16 11:01:47,898 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 99285 transitions. Word has length 440 [2022-11-16 11:01:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:47,899 INFO L495 AbstractCegarLoop]: Abstraction has 87120 states and 99285 transitions. [2022-11-16 11:01:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-16 11:01:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 99285 transitions. [2022-11-16 11:01:48,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-16 11:01:48,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:48,129 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:48,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:01:48,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1145768022, now seen corresponding path program 1 times [2022-11-16 11:01:48,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886768487] [2022-11-16 11:01:48,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:48,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 11:01:48,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886768487] [2022-11-16 11:01:48,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886768487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:48,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:48,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111971876] [2022-11-16 11:01:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:48,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:48,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:48,699 INFO L87 Difference]: Start difference. First operand 87120 states and 99285 transitions. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2022-11-16 11:01:53,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:01:53,259 INFO L93 Difference]: Finished difference Result 174238 states and 198568 transitions. [2022-11-16 11:01:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:01:53,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 462 [2022-11-16 11:01:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:01:53,361 INFO L225 Difference]: With dead ends: 174238 [2022-11-16 11:01:53,362 INFO L226 Difference]: Without dead ends: 87120 [2022-11-16 11:01:53,560 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 [2022-11-16 11:01:53,572 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 669 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:01:53,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1284 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:01:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87120 states. [2022-11-16 11:01:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87120 to 87120. [2022-11-16 11:01:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87120 states, 87119 states have (on average 1.111054993744189) internal successors, (96794), 87119 states have internal predecessors, (96794), 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) [2022-11-16 11:01:54,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87120 states to 87120 states and 96794 transitions. [2022-11-16 11:01:54,983 INFO L78 Accepts]: Start accepts. Automaton has 87120 states and 96794 transitions. Word has length 462 [2022-11-16 11:01:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:01:54,983 INFO L495 AbstractCegarLoop]: Abstraction has 87120 states and 96794 transitions. [2022-11-16 11:01:54,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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) [2022-11-16 11:01:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 87120 states and 96794 transitions. [2022-11-16 11:01:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-16 11:01:54,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:01:54,994 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:01:54,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:01:54,994 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:01:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:01:54,995 INFO L85 PathProgramCache]: Analyzing trace with hash -609871444, now seen corresponding path program 1 times [2022-11-16 11:01:54,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:01:54,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544837804] [2022-11-16 11:01:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:01:54,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:01:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:01:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 638 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-16 11:01:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:01:56,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544837804] [2022-11-16 11:01:56,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544837804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:01:56,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:01:56,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:01:56,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625528625] [2022-11-16 11:01:56,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:01:56,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:01:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:01:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:01:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:01:56,050 INFO L87 Difference]: Start difference. First operand 87120 states and 96794 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-16 11:02:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:00,794 INFO L93 Difference]: Finished difference Result 194515 states and 216235 transitions. [2022-11-16 11:02:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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 477 [2022-11-16 11:02:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:00,913 INFO L225 Difference]: With dead ends: 194515 [2022-11-16 11:02:00,914 INFO L226 Difference]: Without dead ends: 107397 [2022-11-16 11:02:00,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:00,937 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 778 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 618 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:00,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 111 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [618 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:02:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107397 states. [2022-11-16 11:02:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107397 to 105895. [2022-11-16 11:02:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.0979564470130507) internal successors, (116267), 105894 states have internal predecessors, (116267), 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) [2022-11-16 11:02:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 116267 transitions. [2022-11-16 11:02:02,581 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 116267 transitions. Word has length 477 [2022-11-16 11:02:02,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:02,582 INFO L495 AbstractCegarLoop]: Abstraction has 105895 states and 116267 transitions. [2022-11-16 11:02:02,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2022-11-16 11:02:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 116267 transitions. [2022-11-16 11:02:02,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-16 11:02:02,609 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:02,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:02,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:02:02,612 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:02,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash -160333124, now seen corresponding path program 1 times [2022-11-16 11:02:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:02,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440480592] [2022-11-16 11:02:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:02,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 27 proven. 259 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-16 11:02:03,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440480592] [2022-11-16 11:02:03,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440480592] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:02:03,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319742804] [2022-11-16 11:02:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:03,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:02:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:02:03,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:02:03,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:02:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:03,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:02:03,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:02:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-16 11:02:04,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:02:04,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319742804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:04,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:02:04,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:02:04,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507075482] [2022-11-16 11:02:04,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:04,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:04,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:04,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:04,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:02:04,190 INFO L87 Difference]: Start difference. First operand 105895 states and 116267 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-11-16 11:02:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:08,820 INFO L93 Difference]: Finished difference Result 211788 states and 232532 transitions. [2022-11-16 11:02:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 482 [2022-11-16 11:02:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:08,956 INFO L225 Difference]: With dead ends: 211788 [2022-11-16 11:02:08,957 INFO L226 Difference]: Without dead ends: 105895 [2022-11-16 11:02:09,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:02:09,003 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 612 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:09,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 999 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:02:09,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2022-11-16 11:02:10,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 101389. [2022-11-16 11:02:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101389 states, 101388 states have (on average 1.076448889414921) internal successors, (109139), 101388 states have internal predecessors, (109139), 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) [2022-11-16 11:02:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101389 states to 101389 states and 109139 transitions. [2022-11-16 11:02:10,785 INFO L78 Accepts]: Start accepts. Automaton has 101389 states and 109139 transitions. Word has length 482 [2022-11-16 11:02:10,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:10,786 INFO L495 AbstractCegarLoop]: Abstraction has 101389 states and 109139 transitions. [2022-11-16 11:02:10,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-11-16 11:02:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand 101389 states and 109139 transitions. [2022-11-16 11:02:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-16 11:02:10,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:10,792 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:10,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:02:10,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eae29bd-d14c-478c-bec9-33a8fbb4af3d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:02:10,993 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:10,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906222, now seen corresponding path program 1 times [2022-11-16 11:02:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:10,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647731940] [2022-11-16 11:02:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 536 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-16 11:02:11,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:11,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647731940] [2022-11-16 11:02:11,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647731940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:11,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:11,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:02:11,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147854718] [2022-11-16 11:02:11,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:11,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:11,403 INFO L87 Difference]: Start difference. First operand 101389 states and 109139 transitions. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-11-16 11:02:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:15,952 INFO L93 Difference]: Finished difference Result 209535 states and 225223 transitions. [2022-11-16 11:02:15,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:15,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 486 [2022-11-16 11:02:15,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:16,073 INFO L225 Difference]: With dead ends: 209535 [2022-11-16 11:02:16,073 INFO L226 Difference]: Without dead ends: 108148 [2022-11-16 11:02:16,116 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 [2022-11-16 11:02:16,117 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 722 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2095 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:16,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1206 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2095 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-16 11:02:16,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108148 states. [2022-11-16 11:02:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108148 to 102140. [2022-11-16 11:02:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.0635800233015793) internal successors, (108633), 102139 states have internal predecessors, (108633), 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) [2022-11-16 11:02:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 108633 transitions. [2022-11-16 11:02:17,990 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 108633 transitions. Word has length 486 [2022-11-16 11:02:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:17,991 INFO L495 AbstractCegarLoop]: Abstraction has 102140 states and 108633 transitions. [2022-11-16 11:02:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2022-11-16 11:02:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 108633 transitions. [2022-11-16 11:02:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-16 11:02:17,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:17,999 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:18,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:02:18,000 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1283831504, now seen corresponding path program 1 times [2022-11-16 11:02:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977285969] [2022-11-16 11:02:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:18,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:02:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:18,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977285969] [2022-11-16 11:02:18,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977285969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:18,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:18,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:02:18,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539295676] [2022-11-16 11:02:18,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:18,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:18,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:18,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:18,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:18,466 INFO L87 Difference]: Start difference. First operand 102140 states and 108633 transitions. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2022-11-16 11:02:23,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:23,141 INFO L93 Difference]: Finished difference Result 209535 states and 222618 transitions. [2022-11-16 11:02:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:23,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 490 [2022-11-16 11:02:23,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:23,282 INFO L225 Difference]: With dead ends: 209535 [2022-11-16 11:02:23,283 INFO L226 Difference]: Without dead ends: 106646 [2022-11-16 11:02:23,739 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 [2022-11-16 11:02:23,743 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 761 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2086 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 2086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:23,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1012 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 2086 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:02:23,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106646 states. [2022-11-16 11:02:24,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106646 to 98385. [2022-11-16 11:02:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98385 states, 98384 states have (on average 1.0530980647259718) internal successors, (103608), 98384 states have internal predecessors, (103608), 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) [2022-11-16 11:02:25,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98385 states to 98385 states and 103608 transitions. [2022-11-16 11:02:25,031 INFO L78 Accepts]: Start accepts. Automaton has 98385 states and 103608 transitions. Word has length 490 [2022-11-16 11:02:25,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:25,032 INFO L495 AbstractCegarLoop]: Abstraction has 98385 states and 103608 transitions. [2022-11-16 11:02:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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) [2022-11-16 11:02:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 98385 states and 103608 transitions. [2022-11-16 11:02:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2022-11-16 11:02:25,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:25,049 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:25,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:02:25,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1018956641, now seen corresponding path program 1 times [2022-11-16 11:02:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:25,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328879654] [2022-11-16 11:02:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:25,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-11-16 11:02:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:26,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328879654] [2022-11-16 11:02:26,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328879654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:26,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:26,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:02:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736288878] [2022-11-16 11:02:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:26,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:26,329 INFO L87 Difference]: Start difference. First operand 98385 states and 103608 transitions. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2022-11-16 11:02:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:31,205 INFO L93 Difference]: Finished difference Result 202776 states and 213439 transitions. [2022-11-16 11:02:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:31,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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 612 [2022-11-16 11:02:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:31,311 INFO L225 Difference]: With dead ends: 202776 [2022-11-16 11:02:31,312 INFO L226 Difference]: Without dead ends: 102891 [2022-11-16 11:02:31,341 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 [2022-11-16 11:02:31,342 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 484 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:31,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 1260 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:02:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2022-11-16 11:02:32,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 102891. [2022-11-16 11:02:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102891 states, 102890 states have (on average 1.0480221595879093) internal successors, (107831), 102890 states have internal predecessors, (107831), 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) [2022-11-16 11:02:32,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102891 states to 102891 states and 107831 transitions. [2022-11-16 11:02:32,662 INFO L78 Accepts]: Start accepts. Automaton has 102891 states and 107831 transitions. Word has length 612 [2022-11-16 11:02:32,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:32,663 INFO L495 AbstractCegarLoop]: Abstraction has 102891 states and 107831 transitions. [2022-11-16 11:02:32,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 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) [2022-11-16 11:02:32,663 INFO L276 IsEmpty]: Start isEmpty. Operand 102891 states and 107831 transitions. [2022-11-16 11:02:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2022-11-16 11:02:32,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:32,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:32,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:02:32,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:32,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash 841879110, now seen corresponding path program 1 times [2022-11-16 11:02:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:32,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819801908] [2022-11-16 11:02:32,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:32,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2022-11-16 11:02:33,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:33,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819801908] [2022-11-16 11:02:33,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819801908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:33,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:33,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:02:33,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308849703] [2022-11-16 11:02:33,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:33,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:02:33,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:02:33,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:02:33,452 INFO L87 Difference]: Start difference. First operand 102891 states and 107831 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2022-11-16 11:02:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:37,973 INFO L93 Difference]: Finished difference Result 205780 states and 215709 transitions. [2022-11-16 11:02:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:02:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 630 [2022-11-16 11:02:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:38,131 INFO L225 Difference]: With dead ends: 205780 [2022-11-16 11:02:38,132 INFO L226 Difference]: Without dead ends: 103642 [2022-11-16 11:02:38,182 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 [2022-11-16 11:02:38,183 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 862 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:38,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1116 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 11:02:38,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103642 states. [2022-11-16 11:02:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103642 to 103642. [2022-11-16 11:02:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103642 states, 103641 states have (on average 1.0406209897627388) internal successors, (107851), 103641 states have internal predecessors, (107851), 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) [2022-11-16 11:02:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103642 states to 103642 states and 107851 transitions. [2022-11-16 11:02:39,856 INFO L78 Accepts]: Start accepts. Automaton has 103642 states and 107851 transitions. Word has length 630 [2022-11-16 11:02:39,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:02:39,856 INFO L495 AbstractCegarLoop]: Abstraction has 103642 states and 107851 transitions. [2022-11-16 11:02:39,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2022-11-16 11:02:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 103642 states and 107851 transitions. [2022-11-16 11:02:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1412 [2022-11-16 11:02:39,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:02:39,963 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:39,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:02:39,964 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:02:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 927474379, now seen corresponding path program 1 times [2022-11-16 11:02:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:39,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475751216] [2022-11-16 11:02:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:02:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:44,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475751216] [2022-11-16 11:02:44,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475751216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:44,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:44,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:02:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130762824] [2022-11-16 11:02:44,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:02:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:44,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:02:44,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:02:44,598 INFO L87 Difference]: Start difference. First operand 103642 states and 107851 transitions. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 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) [2022-11-16 11:02:54,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:02:54,380 INFO L93 Difference]: Finished difference Result 280880 states and 292632 transitions. [2022-11-16 11:02:54,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:02:54,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 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 1411 [2022-11-16 11:02:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:02:54,556 INFO L225 Difference]: With dead ends: 280880 [2022-11-16 11:02:54,556 INFO L226 Difference]: Without dead ends: 177991 [2022-11-16 11:02:54,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:02:54,601 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1937 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 6152 mSolverCounterSat, 1434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1434 IncrementalHoareTripleChecker+Valid, 6152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:02:54,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 183 Invalid, 7586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1434 Valid, 6152 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-16 11:02:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177991 states.