./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R --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 b2d817c779a7c88ce14310f494c47ad6ae04ac82c2c2c295ca0b97645ed08cbd --- 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-38b53e6 [2022-11-25 17:57:39,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:57:39,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:57:39,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:57:39,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:57:39,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:57:39,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:57:39,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:57:39,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:57:39,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:57:39,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:57:39,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:57:39,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:57:39,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:57:39,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:57:39,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:57:39,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:57:39,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:57:39,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:57:39,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:57:39,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:57:39,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:57:39,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:57:39,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:57:39,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:57:39,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:57:39,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:57:39,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:57:39,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:57:39,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:57:39,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:57:39,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:57:39,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:57:39,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:57:39,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:57:39,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:57:39,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:57:39,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:57:39,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:57:39,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:57:39,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:57:39,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:57:39,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:57:39,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:57:39,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:57:39,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:57:39,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:57:39,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:57:39,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:57:39,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:57:39,541 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:57:39,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:57:39,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:57:39,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:57:39,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:57:39,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:57:39,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:57:39,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:57:39,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:57:39,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:57:39,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:57:39,544 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:57:39,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:57:39,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:57:39,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:57:39,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:57:39,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:57:39,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:57:39,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:57:39,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:57:39,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:57:39,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:57:39,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:57:39,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:57:39,548 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:57:39,548 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:57:39,549 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2d817c779a7c88ce14310f494c47ad6ae04ac82c2c2c295ca0b97645ed08cbd [2022-11-25 17:57:39,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:57:39,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:57:39,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:57:39,963 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:57:39,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:57:39,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c [2022-11-25 17:57:43,121 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:57:43,793 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:57:43,794 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c [2022-11-25 17:57:43,858 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/data/ce3412c75/35cc001183774aacace81e953e8a2b3a/FLAG1fad0c346 [2022-11-25 17:57:43,877 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/data/ce3412c75/35cc001183774aacace81e953e8a2b3a [2022-11-25 17:57:43,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:57:43,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:57:43,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:57:43,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:57:43,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:57:43,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:57:43" (1/1) ... [2022-11-25 17:57:43,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46fc87cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:43, skipping insertion in model container [2022-11-25 17:57:43,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:57:43" (1/1) ... [2022-11-25 17:57:43,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:57:44,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:57:46,699 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c[377069,377082] [2022-11-25 17:57:46,737 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c[383339,383352] [2022-11-25 17:57:47,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:57:47,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:57:48,400 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c[377069,377082] [2022-11-25 17:57:48,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/sv-benchmarks/c/combinations/Problem05_label40+token_ring.10.cil-2.c[383339,383352] [2022-11-25 17:57:48,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:57:48,518 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:57:48,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48 WrapperNode [2022-11-25 17:57:48,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:57:48,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:57:48,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:57:48,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:57:48,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:48,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,135 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-11-25 17:57:49,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:57:49,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:57:49,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:57:49,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:57:49,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,542 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:57:49,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:57:49,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:57:49,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:57:49,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (1/1) ... [2022-11-25 17:57:49,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:57:49,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:57:49,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:57:49,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44656acb-29b6-446c-94b2-f75f325ea808/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:57:49,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:57:49,736 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 17:57:49,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 17:57:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 17:57:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 17:57:49,737 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 17:57:49,737 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 17:57:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 17:57:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 17:57:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 17:57:49,738 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 17:57:49,738 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 17:57:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 17:57:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:57:49,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:57:49,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:57:49,901 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:57:49,904 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:58:00,714 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:58:00,762 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:58:00,762 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-25 17:58:00,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:00 BoogieIcfgContainer [2022-11-25 17:58:00,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:58:00,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:58:00,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:58:00,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:58:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:57:43" (1/3) ... [2022-11-25 17:58:00,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fa0560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:00, skipping insertion in model container [2022-11-25 17:58:00,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:57:48" (2/3) ... [2022-11-25 17:58:00,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fa0560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:00, skipping insertion in model container [2022-11-25 17:58:00,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:00" (3/3) ... [2022-11-25 17:58:00,785 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.10.cil-2.c [2022-11-25 17:58:00,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:58:00,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:58:00,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:58:00,947 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;@4dbf91d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:58:00,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 17:58:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-25 17:58:01,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:01,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:01,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:01,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:01,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-11-25 17:58:01,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:01,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546540983] [2022-11-25 17:58:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:01,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:01,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546540983] [2022-11-25 17:58:01,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546540983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:01,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:01,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:58:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273929835] [2022-11-25 17:58:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:01,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:58:01,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:01,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:58:01,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:58:01,908 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:04,572 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-11-25 17:58:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:58:04,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:04,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:04,620 INFO L225 Difference]: With dead ends: 5140 [2022-11-25 17:58:04,620 INFO L226 Difference]: Without dead ends: 2568 [2022-11-25 17:58:04,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:58:04,640 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 888 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 16739 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:04,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 16739 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 17:58:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-25 17:58:04,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-11-25 17:58:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-25 17:58:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-11-25 17:58:04,877 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-11-25 17:58:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:04,878 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-11-25 17:58:04,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-11-25 17:58:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:04,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:04,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:04,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:58:04,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:04,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:04,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-11-25 17:58:04,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:04,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031156381] [2022-11-25 17:58:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:05,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031156381] [2022-11-25 17:58:05,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031156381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163695583] [2022-11-25 17:58:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:05,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:05,540 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:11,036 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-11-25 17:58:11,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:11,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:11,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:11,057 INFO L225 Difference]: With dead ends: 3341 [2022-11-25 17:58:11,057 INFO L226 Difference]: Without dead ends: 3032 [2022-11-25 17:58:11,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:11,065 INFO L413 NwaCegarLoop]: 4443 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21893 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:11,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21893 Invalid, 3253 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [64 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 17:58:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-11-25 17:58:11,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-11-25 17:58:11,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-25 17:58:11,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-11-25 17:58:11,251 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-11-25 17:58:11,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:11,252 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-11-25 17:58:11,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-11-25 17:58:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:11,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:11,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:58:11,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-11-25 17:58:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:11,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677672828] [2022-11-25 17:58:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:11,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:11,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677672828] [2022-11-25 17:58:11,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677672828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:11,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:11,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:11,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124354744] [2022-11-25 17:58:11,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:11,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:11,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:11,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:11,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:11,689 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:17,042 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-11-25 17:58:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:17,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:17,064 INFO L225 Difference]: With dead ends: 4476 [2022-11-25 17:58:17,065 INFO L226 Difference]: Without dead ends: 3842 [2022-11-25 17:58:17,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:17,071 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5274 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:17,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 21789 Invalid, 3067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 17:58:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-25 17:58:17,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-11-25 17:58:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-11-25 17:58:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-11-25 17:58:17,365 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-11-25 17:58:17,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:17,365 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-11-25 17:58:17,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-11-25 17:58:17,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:17,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:17,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:17,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:58:17,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-11-25 17:58:17,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:17,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369647781] [2022-11-25 17:58:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:17,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:17,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:17,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:17,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369647781] [2022-11-25 17:58:17,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369647781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:17,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:17,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067011972] [2022-11-25 17:58:17,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:17,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:17,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:17,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:17,705 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:22,697 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-11-25 17:58:22,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:22,729 INFO L225 Difference]: With dead ends: 6696 [2022-11-25 17:58:22,733 INFO L226 Difference]: Without dead ends: 5460 [2022-11-25 17:58:22,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:22,751 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:22,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 17:58:22,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-25 17:58:23,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-11-25 17:58:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-11-25 17:58:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-11-25 17:58:23,200 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-11-25 17:58:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:23,204 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-11-25 17:58:23,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:23,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-11-25 17:58:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:23,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:23,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:23,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:58:23,209 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:23,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-11-25 17:58:23,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:23,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341019724] [2022-11-25 17:58:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:23,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:23,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341019724] [2022-11-25 17:58:23,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341019724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:23,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:23,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:23,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334460071] [2022-11-25 17:58:23,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:23,515 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:28,795 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-11-25 17:58:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:28,839 INFO L225 Difference]: With dead ends: 11134 [2022-11-25 17:58:28,839 INFO L226 Difference]: Without dead ends: 8692 [2022-11-25 17:58:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:28,852 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:28,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 17:58:28,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-11-25 17:58:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-11-25 17:58:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-11-25 17:58:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-11-25 17:58:29,697 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-11-25 17:58:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:29,698 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-11-25 17:58:29,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:29,699 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-11-25 17:58:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:29,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:29,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:29,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:58:29,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-11-25 17:58:29,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:29,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558511011] [2022-11-25 17:58:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:29,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:29,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558511011] [2022-11-25 17:58:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558511011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:29,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436432023] [2022-11-25 17:58:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:30,000 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:35,643 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-11-25 17:58:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:35,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:35,721 INFO L225 Difference]: With dead ends: 20008 [2022-11-25 17:58:35,721 INFO L226 Difference]: Without dead ends: 15148 [2022-11-25 17:58:35,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:35,744 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:35,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 17:58:35,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-11-25 17:58:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-11-25 17:58:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-11-25 17:58:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-11-25 17:58:37,147 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-11-25 17:58:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:37,148 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-11-25 17:58:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-11-25 17:58:37,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:37,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:37,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:37,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:58:37,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:37,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-11-25 17:58:37,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:37,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433836737] [2022-11-25 17:58:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:37,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:37,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433836737] [2022-11-25 17:58:37,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433836737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:37,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:37,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:37,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808903659] [2022-11-25 17:58:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:37,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:37,427 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:45,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:45,015 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-11-25 17:58:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:58:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:45,151 INFO L225 Difference]: With dead ends: 37754 [2022-11-25 17:58:45,151 INFO L226 Difference]: Without dead ends: 28044 [2022-11-25 17:58:45,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:58:45,199 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:45,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 17:58:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-11-25 17:58:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-11-25 17:58:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-25 17:58:47,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-11-25 17:58:47,800 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-11-25 17:58:47,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:47,800 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-11-25 17:58:47,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-11-25 17:58:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:47,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:47,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:47,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:58:47,818 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:47,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:47,819 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-11-25 17:58:47,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:47,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996248921] [2022-11-25 17:58:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:47,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:48,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:48,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:48,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:48,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996248921] [2022-11-25 17:58:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996248921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:48,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:48,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470027113] [2022-11-25 17:58:48,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:48,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:48,117 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:58:53,917 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-11-25 17:58:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:58:53,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:58:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:58:54,056 INFO L225 Difference]: With dead ends: 47941 [2022-11-25 17:58:54,056 INFO L226 Difference]: Without dead ends: 28499 [2022-11-25 17:58:54,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:58:54,120 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4929 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 20851 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:58:54,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 20851 Invalid, 1601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 17:58:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-11-25 17:58:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-11-25 17:58:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-25 17:58:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-11-25 17:58:56,926 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-11-25 17:58:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:58:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-11-25 17:58:56,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:58:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-11-25 17:58:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:58:56,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:58:56,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:58:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:58:56,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:58:56,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:58:56,943 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-11-25 17:58:56,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:58:56,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383990255] [2022-11-25 17:58:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:58:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:58:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:58:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:58:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:58:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:58:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:58:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:58:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:58:57,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:58:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383990255] [2022-11-25 17:58:57,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383990255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:58:57,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:58:57,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:58:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474223491] [2022-11-25 17:58:57,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:58:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:58:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:58:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:58:57,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:58:57,452 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:59:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:59:09,570 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-11-25 17:59:09,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:59:09,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-25 17:59:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:59:09,860 INFO L225 Difference]: With dead ends: 73117 [2022-11-25 17:59:09,860 INFO L226 Difference]: Without dead ends: 53677 [2022-11-25 17:59:09,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:59:09,940 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5265 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:59:09,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5282 Valid, 21890 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 17:59:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-11-25 17:59:15,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-11-25 17:59:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-11-25 17:59:15,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-11-25 17:59:15,449 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-11-25 17:59:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:59:15,450 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-11-25 17:59:15,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 17:59:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-11-25 17:59:15,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 17:59:15,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:59:15,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:59:15,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:59:15,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:59:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:59:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-11-25 17:59:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:59:15,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197870028] [2022-11-25 17:59:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:59:15,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:59:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:59:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-25 17:59:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:16,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:59:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-25 17:59:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-25 17:59:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:59:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:59:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:59:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197870028] [2022-11-25 17:59:16,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197870028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:59:16,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:59:16,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:59:16,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238586880] [2022-11-25 17:59:16,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:59:16,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:59:16,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:59:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:59:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:59:16,043 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)