./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/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 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe --- 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 15:48:34,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:48:34,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:48:34,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:48:34,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:48:34,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:48:34,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:48:34,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:48:34,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:48:34,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:48:34,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:48:34,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:48:34,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:48:34,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:48:34,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:48:34,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:48:34,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:48:34,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:48:34,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:48:34,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:48:34,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:48:34,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:48:34,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:48:34,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:48:34,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:48:34,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:48:34,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:48:34,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:48:34,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:48:34,550 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:48:34,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:48:34,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:48:34,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:48:34,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:48:34,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:48:34,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:48:34,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:48:34,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:48:34,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:48:34,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:48:34,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:48:34,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:48:34,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:48:34,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:48:34,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:48:34,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:48:34,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:48:34,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:48:34,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:48:34,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:48:34,605 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:48:34,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:48:34,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:48:34,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:48:34,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:48:34,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:48:34,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:48:34,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:48:34,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:48:34,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:48:34,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:48:34,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:48:34,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:48:34,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:48:34,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:48:34,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:48:34,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:48:34,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:48:34,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:48:34,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:48:34,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:48:34,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:48:34,611 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:48:34,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:48:34,611 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:48:34,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:48:34,612 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe [2022-11-25 15:48:34,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:48:34,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:48:34,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:48:34,939 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:48:34,939 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:48:34,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-25 15:48:37,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:48:38,383 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:48:38,384 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-25 15:48:38,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/data/a7b63caf3/21a0a4976d8f4714bedfe9b9094b65a0/FLAGda03bf355 [2022-11-25 15:48:38,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/data/a7b63caf3/21a0a4976d8f4714bedfe9b9094b65a0 [2022-11-25 15:48:38,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:48:38,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:48:38,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:48:38,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:48:38,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:48:38,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:48:38" (1/1) ... [2022-11-25 15:48:38,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a5b898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:38, skipping insertion in model container [2022-11-25 15:48:38,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:48:38" (1/1) ... [2022-11-25 15:48:38,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:48:38,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:48:38,769 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-25 15:48:38,820 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-25 15:48:38,839 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-25 15:48:38,847 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-25 15:48:39,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:48:39,118 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:48:39,178 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-25 15:48:39,201 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-25 15:48:39,209 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-25 15:48:39,214 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_56c1acf1-836f-4a59-998d-6b1b299ec0b7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-25 15:48:39,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:48:39,366 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:48:39,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39 WrapperNode [2022-11-25 15:48:39,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:48:39,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:48:39,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:48:39,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:48:39,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,525 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2589 [2022-11-25 15:48:39,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:48:39,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:48:39,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:48:39,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:48:39,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:48:39,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:48:39,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:48:39,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:48:39,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (1/1) ... [2022-11-25 15:48:39,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:48:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:48:39,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:48:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:48:39,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:48:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:48:39,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:48:39,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:48:40,055 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:48:40,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:48:41,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:48:41,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:48:41,816 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:48:41,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:48:41 BoogieIcfgContainer [2022-11-25 15:48:41,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:48:41,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:48:41,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:48:41,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:48:41,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:48:38" (1/3) ... [2022-11-25 15:48:41,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4d62d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:48:41, skipping insertion in model container [2022-11-25 15:48:41,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:48:39" (2/3) ... [2022-11-25 15:48:41,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b4d62d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:48:41, skipping insertion in model container [2022-11-25 15:48:41,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:48:41" (3/3) ... [2022-11-25 15:48:41,844 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-25 15:48:41,864 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:48:41,864 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-25 15:48:41,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:48:41,940 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;@28d14d45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:48:41,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 15:48:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 15:48:41,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:41,974 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] [2022-11-25 15:48:41,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:41,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2022-11-25 15:48:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:41,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755765037] [2022-11-25 15:48:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:41,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:42,447 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 15:48:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:42,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755765037] [2022-11-25 15:48:42,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755765037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:42,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:42,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:48:42,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192920778] [2022-11-25 15:48:42,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:42,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:42,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:42,509 INFO L87 Difference]: Start difference. First operand has 457 states, 452 states have (on average 1.8495575221238938) internal successors, (836), 456 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:42,698 INFO L93 Difference]: Finished difference Result 725 states and 1271 transitions. [2022-11-25 15:48:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:42,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 15:48:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:42,732 INFO L225 Difference]: With dead ends: 725 [2022-11-25 15:48:42,733 INFO L226 Difference]: Without dead ends: 571 [2022-11-25 15:48:42,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:42,743 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 438 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:42,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1416 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:48:42,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-25 15:48:42,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2022-11-25 15:48:42,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 561 states have (on average 1.3440285204991087) internal successors, (754), 564 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:42,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 754 transitions. [2022-11-25 15:48:42,853 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 754 transitions. Word has length 51 [2022-11-25 15:48:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 754 transitions. [2022-11-25 15:48:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:42,855 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 754 transitions. [2022-11-25 15:48:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 15:48:42,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:42,863 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] [2022-11-25 15:48:42,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:48:42,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:42,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:42,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1349444518, now seen corresponding path program 1 times [2022-11-25 15:48:42,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:42,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728925710] [2022-11-25 15:48:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:43,098 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 15:48:43,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:43,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728925710] [2022-11-25 15:48:43,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728925710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:43,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:43,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:48:43,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268385374] [2022-11-25 15:48:43,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:43,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:43,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:43,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:43,102 INFO L87 Difference]: Start difference. First operand 565 states and 754 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:43,244 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2022-11-25 15:48:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 15:48:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:43,248 INFO L225 Difference]: With dead ends: 994 [2022-11-25 15:48:43,248 INFO L226 Difference]: Without dead ends: 781 [2022-11-25 15:48:43,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:43,251 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 314 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:43,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1017 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:48:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-11-25 15:48:43,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 774. [2022-11-25 15:48:43,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 770 states have (on average 1.3714285714285714) internal successors, (1056), 773 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1056 transitions. [2022-11-25 15:48:43,300 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1056 transitions. Word has length 51 [2022-11-25 15:48:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:43,301 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1056 transitions. [2022-11-25 15:48:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1056 transitions. [2022-11-25 15:48:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-25 15:48:43,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:43,303 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] [2022-11-25 15:48:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:48:43,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:43,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1493728400, now seen corresponding path program 1 times [2022-11-25 15:48:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:43,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179936531] [2022-11-25 15:48:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:43,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:48:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179936531] [2022-11-25 15:48:43,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179936531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:43,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:43,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:48:43,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862216114] [2022-11-25 15:48:43,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:43,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:48:43,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:43,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:48:43,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:48:43,518 INFO L87 Difference]: Start difference. First operand 774 states and 1056 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:44,045 INFO L93 Difference]: Finished difference Result 1716 states and 2415 transitions. [2022-11-25 15:48:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:48:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-25 15:48:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:44,049 INFO L225 Difference]: With dead ends: 1716 [2022-11-25 15:48:44,050 INFO L226 Difference]: Without dead ends: 1059 [2022-11-25 15:48:44,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:44,056 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1743 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:44,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 391 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 15:48:44,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-25 15:48:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1053. [2022-11-25 15:48:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1049 states have (on average 1.4089609151572926) internal successors, (1478), 1052 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1478 transitions. [2022-11-25 15:48:44,162 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1478 transitions. Word has length 51 [2022-11-25 15:48:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:44,165 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1478 transitions. [2022-11-25 15:48:44,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1478 transitions. [2022-11-25 15:48:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 15:48:44,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:44,168 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] [2022-11-25 15:48:44,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:48:44,168 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:44,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -358090099, now seen corresponding path program 1 times [2022-11-25 15:48:44,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:44,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839866619] [2022-11-25 15:48:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:44,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:44,274 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 15:48:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839866619] [2022-11-25 15:48:44,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839866619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:44,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:44,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:48:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311267317] [2022-11-25 15:48:44,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:44,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:48:44,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:44,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:48:44,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:44,279 INFO L87 Difference]: Start difference. First operand 1053 states and 1478 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:44,467 INFO L93 Difference]: Finished difference Result 2099 states and 2965 transitions. [2022-11-25 15:48:44,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:48:44,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-25 15:48:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:44,473 INFO L225 Difference]: With dead ends: 2099 [2022-11-25 15:48:44,473 INFO L226 Difference]: Without dead ends: 1399 [2022-11-25 15:48:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:48:44,484 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 364 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:44,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 929 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:48:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2022-11-25 15:48:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1385. [2022-11-25 15:48:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1381 states have (on average 1.3721940622737148) internal successors, (1895), 1384 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1895 transitions. [2022-11-25 15:48:44,633 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1895 transitions. Word has length 52 [2022-11-25 15:48:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:44,635 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1895 transitions. [2022-11-25 15:48:44,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1895 transitions. [2022-11-25 15:48:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 15:48:44,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:44,638 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] [2022-11-25 15:48:44,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:48:44,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:44,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:44,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2022-11-25 15:48:44,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:44,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301138618] [2022-11-25 15:48:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:44,805 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 15:48:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:44,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301138618] [2022-11-25 15:48:44,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301138618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:44,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:44,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:48:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873430598] [2022-11-25 15:48:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:44,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:48:44,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:44,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:48:44,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:48:44,809 INFO L87 Difference]: Start difference. First operand 1385 states and 1895 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:45,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:45,399 INFO L93 Difference]: Finished difference Result 2980 states and 4125 transitions. [2022-11-25 15:48:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:48:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-11-25 15:48:45,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:45,406 INFO L225 Difference]: With dead ends: 2980 [2022-11-25 15:48:45,406 INFO L226 Difference]: Without dead ends: 1767 [2022-11-25 15:48:45,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:45,409 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1527 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:45,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 367 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:48:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-11-25 15:48:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1755. [2022-11-25 15:48:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1751 states have (on average 1.3774985722444317) internal successors, (2412), 1754 states have internal predecessors, (2412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2412 transitions. [2022-11-25 15:48:45,662 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2412 transitions. Word has length 52 [2022-11-25 15:48:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:45,663 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2412 transitions. [2022-11-25 15:48:45,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2412 transitions. [2022-11-25 15:48:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 15:48:45,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:45,666 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] [2022-11-25 15:48:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:48:45,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -482685133, now seen corresponding path program 1 times [2022-11-25 15:48:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354088351] [2022-11-25 15:48:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:45,784 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 15:48:45,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:45,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354088351] [2022-11-25 15:48:45,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354088351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:45,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:45,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:48:45,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866605314] [2022-11-25 15:48:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:45,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:48:45,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:48:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:48:45,787 INFO L87 Difference]: Start difference. First operand 1755 states and 2412 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:46,432 INFO L93 Difference]: Finished difference Result 3900 states and 5393 transitions. [2022-11-25 15:48:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:48:46,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 15:48:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:46,440 INFO L225 Difference]: With dead ends: 3900 [2022-11-25 15:48:46,440 INFO L226 Difference]: Without dead ends: 2317 [2022-11-25 15:48:46,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:46,443 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 1376 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:46,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 335 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 15:48:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-11-25 15:48:46,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 2301. [2022-11-25 15:48:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2297 states have (on average 1.370047888550283) internal successors, (3147), 2300 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3147 transitions. [2022-11-25 15:48:46,723 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3147 transitions. Word has length 53 [2022-11-25 15:48:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:46,723 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3147 transitions. [2022-11-25 15:48:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3147 transitions. [2022-11-25 15:48:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:48:46,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:46,726 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] [2022-11-25 15:48:46,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:48:46,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1630046103, now seen corresponding path program 1 times [2022-11-25 15:48:46,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:46,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317842400] [2022-11-25 15:48:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:46,948 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 15:48:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317842400] [2022-11-25 15:48:46,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317842400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:46,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:46,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:48:46,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111029700] [2022-11-25 15:48:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:46,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:48:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:46,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:48:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:46,950 INFO L87 Difference]: Start difference. First operand 2301 states and 3147 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:48,428 INFO L93 Difference]: Finished difference Result 7377 states and 10306 transitions. [2022-11-25 15:48:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:48:48,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:48:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:48,452 INFO L225 Difference]: With dead ends: 7377 [2022-11-25 15:48:48,452 INFO L226 Difference]: Without dead ends: 6335 [2022-11-25 15:48:48,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:48:48,456 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2798 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:48,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 599 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:48:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2022-11-25 15:48:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 2315. [2022-11-25 15:48:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2315 states, 2311 states have (on average 1.3695369969710083) internal successors, (3165), 2314 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:48,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 3165 transitions. [2022-11-25 15:48:48,867 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 3165 transitions. Word has length 54 [2022-11-25 15:48:48,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:48,867 INFO L495 AbstractCegarLoop]: Abstraction has 2315 states and 3165 transitions. [2022-11-25 15:48:48,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 3165 transitions. [2022-11-25 15:48:48,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:48:48,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:48,870 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] [2022-11-25 15:48:48,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:48:48,870 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:48,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:48,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2022-11-25 15:48:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133789263] [2022-11-25 15:48:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:49,068 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 15:48:49,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:49,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133789263] [2022-11-25 15:48:49,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133789263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:49,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:49,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:48:49,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365715959] [2022-11-25 15:48:49,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:49,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:48:49,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:48:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:49,072 INFO L87 Difference]: Start difference. First operand 2315 states and 3165 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:50,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:50,990 INFO L93 Difference]: Finished difference Result 8133 states and 11423 transitions. [2022-11-25 15:48:50,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:48:50,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:48:50,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:51,016 INFO L225 Difference]: With dead ends: 8133 [2022-11-25 15:48:51,017 INFO L226 Difference]: Without dead ends: 7286 [2022-11-25 15:48:51,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:48:51,020 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 2116 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:51,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 757 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:48:51,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2022-11-25 15:48:51,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 2337. [2022-11-25 15:48:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 2333 states have (on average 1.36990998714102) internal successors, (3196), 2336 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3196 transitions. [2022-11-25 15:48:51,473 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3196 transitions. Word has length 54 [2022-11-25 15:48:51,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:51,473 INFO L495 AbstractCegarLoop]: Abstraction has 2337 states and 3196 transitions. [2022-11-25 15:48:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:51,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3196 transitions. [2022-11-25 15:48:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 15:48:51,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:51,476 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] [2022-11-25 15:48:51,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:48:51,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:51,478 INFO L85 PathProgramCache]: Analyzing trace with hash 269556297, now seen corresponding path program 1 times [2022-11-25 15:48:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:51,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887595930] [2022-11-25 15:48:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:51,632 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 15:48:51,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:51,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887595930] [2022-11-25 15:48:51,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887595930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:51,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:51,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:48:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895445292] [2022-11-25 15:48:51,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:51,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:48:51,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:48:51,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:48:51,635 INFO L87 Difference]: Start difference. First operand 2337 states and 3196 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:53,810 INFO L93 Difference]: Finished difference Result 9898 states and 13851 transitions. [2022-11-25 15:48:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:48:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-25 15:48:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:53,843 INFO L225 Difference]: With dead ends: 9898 [2022-11-25 15:48:53,843 INFO L226 Difference]: Without dead ends: 8930 [2022-11-25 15:48:53,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:48:53,848 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 3275 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3275 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:53,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3275 Valid, 655 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 15:48:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2022-11-25 15:48:54,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 2371. [2022-11-25 15:48:54,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2367 states have (on average 1.3688212927756653) internal successors, (3240), 2370 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3240 transitions. [2022-11-25 15:48:54,505 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3240 transitions. Word has length 54 [2022-11-25 15:48:54,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:54,506 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3240 transitions. [2022-11-25 15:48:54,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:54,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3240 transitions. [2022-11-25 15:48:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:48:54,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:54,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:48:54,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:48:54,509 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:54,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2022-11-25 15:48:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:54,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123422683] [2022-11-25 15:48:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:54,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:54,793 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 15:48:54,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:54,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123422683] [2022-11-25 15:48:54,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123422683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:54,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:54,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 15:48:54,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543808978] [2022-11-25 15:48:54,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:54,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:48:54,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:48:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:48:54,796 INFO L87 Difference]: Start difference. First operand 2371 states and 3240 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:56,401 INFO L93 Difference]: Finished difference Result 5804 states and 8101 transitions. [2022-11-25 15:48:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:48:56,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 15:48:56,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:56,411 INFO L225 Difference]: With dead ends: 5804 [2022-11-25 15:48:56,411 INFO L226 Difference]: Without dead ends: 4260 [2022-11-25 15:48:56,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-25 15:48:56,415 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2457 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2457 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:56,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2457 Valid, 929 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:48:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2022-11-25 15:48:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 2284. [2022-11-25 15:48:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2280 states have (on average 1.3675438596491227) internal successors, (3118), 2283 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3118 transitions. [2022-11-25 15:48:56,954 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3118 transitions. Word has length 55 [2022-11-25 15:48:56,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:48:56,954 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3118 transitions. [2022-11-25 15:48:56,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3118 transitions. [2022-11-25 15:48:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:48:56,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:48:56,957 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] [2022-11-25 15:48:56,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:48:56,957 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:48:56,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:48:56,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2022-11-25 15:48:56,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:48:56,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693028989] [2022-11-25 15:48:56,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:48:56,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:48:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:48:57,337 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 15:48:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:48:57,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693028989] [2022-11-25 15:48:57,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693028989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:48:57,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:48:57,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:48:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481649109] [2022-11-25 15:48:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:48:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:48:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:48:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:48:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:48:57,340 INFO L87 Difference]: Start difference. First operand 2284 states and 3118 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:48:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:48:59,750 INFO L93 Difference]: Finished difference Result 7120 states and 9979 transitions. [2022-11-25 15:48:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:48:59,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 15:48:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:48:59,762 INFO L225 Difference]: With dead ends: 7120 [2022-11-25 15:48:59,762 INFO L226 Difference]: Without dead ends: 5730 [2022-11-25 15:48:59,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:48:59,768 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2180 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 15:48:59,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 1543 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 15:48:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2022-11-25 15:49:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 2255. [2022-11-25 15:49:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3669480231008442) internal successors, (3077), 2254 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3077 transitions. [2022-11-25 15:49:00,321 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3077 transitions. Word has length 55 [2022-11-25 15:49:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3077 transitions. [2022-11-25 15:49:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3077 transitions. [2022-11-25 15:49:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 15:49:00,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:00,324 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] [2022-11-25 15:49:00,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:49:00,325 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:00,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2022-11-25 15:49:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:00,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88437424] [2022-11-25 15:49:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:00,580 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 15:49:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:00,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88437424] [2022-11-25 15:49:00,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88437424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:00,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:00,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:49:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587355428] [2022-11-25 15:49:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:00,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:49:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:49:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:49:00,583 INFO L87 Difference]: Start difference. First operand 2255 states and 3077 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:02,815 INFO L93 Difference]: Finished difference Result 5396 states and 7541 transitions. [2022-11-25 15:49:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:49:02,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-25 15:49:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:02,826 INFO L225 Difference]: With dead ends: 5396 [2022-11-25 15:49:02,827 INFO L226 Difference]: Without dead ends: 5391 [2022-11-25 15:49:02,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:49:02,829 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 1241 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:02,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1222 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:49:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5391 states. [2022-11-25 15:49:03,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5391 to 2255. [2022-11-25 15:49:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3660595290981785) internal successors, (3075), 2254 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:03,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3075 transitions. [2022-11-25 15:49:03,367 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3075 transitions. Word has length 55 [2022-11-25 15:49:03,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:03,368 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3075 transitions. [2022-11-25 15:49:03,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:03,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3075 transitions. [2022-11-25 15:49:03,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:49:03,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:03,369 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] [2022-11-25 15:49:03,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:49:03,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:03,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2022-11-25 15:49:03,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:03,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875183579] [2022-11-25 15:49:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:03,438 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 15:49:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:03,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875183579] [2022-11-25 15:49:03,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875183579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:03,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:03,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241857418] [2022-11-25 15:49:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:03,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:03,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:03,442 INFO L87 Difference]: Start difference. First operand 2255 states and 3075 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:04,109 INFO L93 Difference]: Finished difference Result 3200 states and 4403 transitions. [2022-11-25 15:49:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:49:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:04,119 INFO L225 Difference]: With dead ends: 3200 [2022-11-25 15:49:04,120 INFO L226 Difference]: Without dead ends: 2262 [2022-11-25 15:49:04,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:04,122 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 222 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:04,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 791 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-11-25 15:49:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2255. [2022-11-25 15:49:04,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3527321190581965) internal successors, (3045), 2254 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3045 transitions. [2022-11-25 15:49:04,567 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3045 transitions. Word has length 56 [2022-11-25 15:49:04,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:04,567 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3045 transitions. [2022-11-25 15:49:04,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:04,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3045 transitions. [2022-11-25 15:49:04,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:49:04,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:04,570 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] [2022-11-25 15:49:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:49:04,571 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2022-11-25 15:49:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:04,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675869953] [2022-11-25 15:49:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:04,628 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 15:49:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:04,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675869953] [2022-11-25 15:49:04,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675869953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:04,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:04,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895935401] [2022-11-25 15:49:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:04,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:04,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:04,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:04,631 INFO L87 Difference]: Start difference. First operand 2255 states and 3045 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:05,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:05,091 INFO L93 Difference]: Finished difference Result 3257 states and 4435 transitions. [2022-11-25 15:49:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:05,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:49:05,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:05,097 INFO L225 Difference]: With dead ends: 3257 [2022-11-25 15:49:05,097 INFO L226 Difference]: Without dead ends: 2261 [2022-11-25 15:49:05,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:05,099 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 238 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:05,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 796 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2022-11-25 15:49:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 2255. [2022-11-25 15:49:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.3402932030208796) internal successors, (3017), 2254 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:05,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3017 transitions. [2022-11-25 15:49:05,658 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3017 transitions. Word has length 56 [2022-11-25 15:49:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:05,659 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3017 transitions. [2022-11-25 15:49:05,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3017 transitions. [2022-11-25 15:49:05,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 15:49:05,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:05,662 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] [2022-11-25 15:49:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:49:05,663 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2022-11-25 15:49:05,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:05,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901221594] [2022-11-25 15:49:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:05,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:05,732 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 15:49:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:05,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901221594] [2022-11-25 15:49:05,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901221594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:05,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:05,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86398852] [2022-11-25 15:49:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:05,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:05,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:05,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:05,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:05,735 INFO L87 Difference]: Start difference. First operand 2255 states and 3017 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:06,379 INFO L93 Difference]: Finished difference Result 3345 states and 4505 transitions. [2022-11-25 15:49:06,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-25 15:49:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:06,383 INFO L225 Difference]: With dead ends: 3345 [2022-11-25 15:49:06,383 INFO L226 Difference]: Without dead ends: 2246 [2022-11-25 15:49:06,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:06,386 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 257 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:06,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 811 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:06,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-11-25 15:49:06,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 2240. [2022-11-25 15:49:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2236 states have (on average 1.3206618962432917) internal successors, (2953), 2239 states have internal predecessors, (2953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 2953 transitions. [2022-11-25 15:49:06,979 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 2953 transitions. Word has length 56 [2022-11-25 15:49:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:06,980 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 2953 transitions. [2022-11-25 15:49:06,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 2953 transitions. [2022-11-25 15:49:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 15:49:06,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:06,983 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] [2022-11-25 15:49:06,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:49:06,983 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1293695138, now seen corresponding path program 1 times [2022-11-25 15:49:06,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:06,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207363858] [2022-11-25 15:49:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:07,032 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 15:49:07,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:07,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207363858] [2022-11-25 15:49:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207363858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:07,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:07,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:07,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476905169] [2022-11-25 15:49:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:07,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:07,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:07,035 INFO L87 Difference]: Start difference. First operand 2240 states and 2953 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:07,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:07,686 INFO L93 Difference]: Finished difference Result 4004 states and 5341 transitions. [2022-11-25 15:49:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:07,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-25 15:49:07,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:07,694 INFO L225 Difference]: With dead ends: 4004 [2022-11-25 15:49:07,694 INFO L226 Difference]: Without dead ends: 2744 [2022-11-25 15:49:07,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:07,697 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 346 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:07,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 548 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2022-11-25 15:49:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 2058. [2022-11-25 15:49:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2054 states have (on average 1.3227848101265822) internal successors, (2717), 2057 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:08,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 2717 transitions. [2022-11-25 15:49:08,259 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 2717 transitions. Word has length 57 [2022-11-25 15:49:08,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:08,260 INFO L495 AbstractCegarLoop]: Abstraction has 2058 states and 2717 transitions. [2022-11-25 15:49:08,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:08,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 2717 transitions. [2022-11-25 15:49:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:49:08,263 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:08,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:08,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:49:08,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2022-11-25 15:49:08,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:08,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004251333] [2022-11-25 15:49:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:08,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:08,954 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 15:49:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:08,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004251333] [2022-11-25 15:49:08,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004251333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:08,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:08,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 15:49:08,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327796729] [2022-11-25 15:49:08,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:08,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:49:08,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:08,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:49:08,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:49:08,957 INFO L87 Difference]: Start difference. First operand 2058 states and 2717 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:11,651 INFO L93 Difference]: Finished difference Result 4944 states and 6655 transitions. [2022-11-25 15:49:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:49:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:49:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:11,658 INFO L225 Difference]: With dead ends: 4944 [2022-11-25 15:49:11,659 INFO L226 Difference]: Without dead ends: 4734 [2022-11-25 15:49:11,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-25 15:49:11,661 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 2683 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 2937 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:11,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 2937 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:49:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4734 states. [2022-11-25 15:49:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4734 to 2033. [2022-11-25 15:49:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2030 states have (on average 1.3236453201970444) internal successors, (2687), 2032 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2687 transitions. [2022-11-25 15:49:12,165 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2687 transitions. Word has length 58 [2022-11-25 15:49:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:12,166 INFO L495 AbstractCegarLoop]: Abstraction has 2033 states and 2687 transitions. [2022-11-25 15:49:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2687 transitions. [2022-11-25 15:49:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:49:12,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:12,168 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] [2022-11-25 15:49:12,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:49:12,169 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2022-11-25 15:49:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:12,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056699632] [2022-11-25 15:49:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:12,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:12,754 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 15:49:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:12,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056699632] [2022-11-25 15:49:12,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056699632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:12,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:12,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 15:49:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657572856] [2022-11-25 15:49:12,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:49:12,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:49:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:49:12,756 INFO L87 Difference]: Start difference. First operand 2033 states and 2687 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:15,130 INFO L93 Difference]: Finished difference Result 4270 states and 5745 transitions. [2022-11-25 15:49:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 15:49:15,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:49:15,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:15,135 INFO L225 Difference]: With dead ends: 4270 [2022-11-25 15:49:15,135 INFO L226 Difference]: Without dead ends: 4206 [2022-11-25 15:49:15,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-25 15:49:15,140 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2139 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2139 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:15,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2139 Valid, 3245 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:49:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4206 states. [2022-11-25 15:49:15,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4206 to 2018. [2022-11-25 15:49:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2016 states have (on average 1.3239087301587302) internal successors, (2669), 2017 states have internal predecessors, (2669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2669 transitions. [2022-11-25 15:49:15,612 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2669 transitions. Word has length 58 [2022-11-25 15:49:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:15,613 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2669 transitions. [2022-11-25 15:49:15,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2669 transitions. [2022-11-25 15:49:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 15:49:15,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:15,615 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] [2022-11-25 15:49:15,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:49:15,615 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1779959307, now seen corresponding path program 1 times [2022-11-25 15:49:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938067472] [2022-11-25 15:49:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:15,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:16,145 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 15:49:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:16,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938067472] [2022-11-25 15:49:16,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938067472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:16,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:16,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 15:49:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880632686] [2022-11-25 15:49:16,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:49:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:49:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:49:16,147 INFO L87 Difference]: Start difference. First operand 2018 states and 2669 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:18,835 INFO L93 Difference]: Finished difference Result 4412 states and 5918 transitions. [2022-11-25 15:49:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 15:49:18,836 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-25 15:49:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:18,840 INFO L225 Difference]: With dead ends: 4412 [2022-11-25 15:49:18,840 INFO L226 Difference]: Without dead ends: 4198 [2022-11-25 15:49:18,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2022-11-25 15:49:18,844 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 3549 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 2221 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:18,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 2221 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:49:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2022-11-25 15:49:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 1967. [2022-11-25 15:49:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1966 states have (on average 1.3260427263479146) internal successors, (2607), 1966 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2607 transitions. [2022-11-25 15:49:19,458 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2607 transitions. Word has length 58 [2022-11-25 15:49:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:19,458 INFO L495 AbstractCegarLoop]: Abstraction has 1967 states and 2607 transitions. [2022-11-25 15:49:19,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2607 transitions. [2022-11-25 15:49:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 15:49:19,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:19,461 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] [2022-11-25 15:49:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:49:19,462 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 590074057, now seen corresponding path program 1 times [2022-11-25 15:49:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:19,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795004849] [2022-11-25 15:49:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:19,552 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 15:49:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:19,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795004849] [2022-11-25 15:49:19,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795004849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:19,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:19,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716130311] [2022-11-25 15:49:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:49:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:19,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:49:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:49:19,555 INFO L87 Difference]: Start difference. First operand 1967 states and 2607 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:21,405 INFO L93 Difference]: Finished difference Result 4481 states and 6118 transitions. [2022-11-25 15:49:21,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:49:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-25 15:49:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:21,408 INFO L225 Difference]: With dead ends: 4481 [2022-11-25 15:49:21,408 INFO L226 Difference]: Without dead ends: 3327 [2022-11-25 15:49:21,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:49:21,411 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1187 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:21,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 874 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:49:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2022-11-25 15:49:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 2952. [2022-11-25 15:49:22,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2951 states have (on average 1.3297187394103693) internal successors, (3924), 2951 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 3924 transitions. [2022-11-25 15:49:22,288 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 3924 transitions. Word has length 68 [2022-11-25 15:49:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:22,289 INFO L495 AbstractCegarLoop]: Abstraction has 2952 states and 3924 transitions. [2022-11-25 15:49:22,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 3924 transitions. [2022-11-25 15:49:22,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 15:49:22,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:22,293 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] [2022-11-25 15:49:22,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:49:22,294 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:22,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:22,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510355, now seen corresponding path program 1 times [2022-11-25 15:49:22,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:22,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865382452] [2022-11-25 15:49:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:22,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:22,397 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 15:49:22,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865382452] [2022-11-25 15:49:22,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865382452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:22,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:49:22,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578887310] [2022-11-25 15:49:22,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:22,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:49:22,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:49:22,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:49:22,400 INFO L87 Difference]: Start difference. First operand 2952 states and 3924 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:23,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:23,485 INFO L93 Difference]: Finished difference Result 2958 states and 3927 transitions. [2022-11-25 15:49:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:49:23,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 15:49:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:23,487 INFO L225 Difference]: With dead ends: 2958 [2022-11-25 15:49:23,488 INFO L226 Difference]: Without dead ends: 2459 [2022-11-25 15:49:23,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:49:23,489 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 686 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:23,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 994 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:49:23,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2022-11-25 15:49:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2455. [2022-11-25 15:49:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2454 states have (on average 1.3333333333333333) internal successors, (3272), 2454 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3272 transitions. [2022-11-25 15:49:24,313 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3272 transitions. Word has length 69 [2022-11-25 15:49:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:24,314 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3272 transitions. [2022-11-25 15:49:24,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3272 transitions. [2022-11-25 15:49:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 15:49:24,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:24,317 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] [2022-11-25 15:49:24,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:49:24,318 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:24,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash -533504505, now seen corresponding path program 1 times [2022-11-25 15:49:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:24,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164255400] [2022-11-25 15:49:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:24,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:24,414 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 15:49:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164255400] [2022-11-25 15:49:24,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164255400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:24,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:24,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700162137] [2022-11-25 15:49:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:24,417 INFO L87 Difference]: Start difference. First operand 2455 states and 3272 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:25,814 INFO L93 Difference]: Finished difference Result 5657 states and 7666 transitions. [2022-11-25 15:49:25,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-25 15:49:25,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:25,821 INFO L225 Difference]: With dead ends: 5657 [2022-11-25 15:49:25,821 INFO L226 Difference]: Without dead ends: 3861 [2022-11-25 15:49:25,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:25,824 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 137 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:25,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 631 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2022-11-25 15:49:27,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3651. [2022-11-25 15:49:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3650 states have (on average 1.330958904109589) internal successors, (4858), 3650 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:27,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 4858 transitions. [2022-11-25 15:49:27,137 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 4858 transitions. Word has length 70 [2022-11-25 15:49:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:27,137 INFO L495 AbstractCegarLoop]: Abstraction has 3651 states and 4858 transitions. [2022-11-25 15:49:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 4858 transitions. [2022-11-25 15:49:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 15:49:27,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:27,141 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] [2022-11-25 15:49:27,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 15:49:27,142 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1110878122, now seen corresponding path program 1 times [2022-11-25 15:49:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:27,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905741597] [2022-11-25 15:49:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:27,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:27,247 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 15:49:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:27,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905741597] [2022-11-25 15:49:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905741597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:27,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007365303] [2022-11-25 15:49:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:27,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:27,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:27,249 INFO L87 Difference]: Start difference. First operand 3651 states and 4858 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:29,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:29,696 INFO L93 Difference]: Finished difference Result 9303 states and 12576 transitions. [2022-11-25 15:49:29,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:29,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-25 15:49:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:29,705 INFO L225 Difference]: With dead ends: 9303 [2022-11-25 15:49:29,705 INFO L226 Difference]: Without dead ends: 6337 [2022-11-25 15:49:29,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:29,709 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 118 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:29,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 625 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6337 states. [2022-11-25 15:49:31,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6337 to 5839. [2022-11-25 15:49:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5839 states, 5838 states have (on average 1.3350462487153134) internal successors, (7794), 5838 states have internal predecessors, (7794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:31,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 7794 transitions. [2022-11-25 15:49:31,994 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 7794 transitions. Word has length 71 [2022-11-25 15:49:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:31,995 INFO L495 AbstractCegarLoop]: Abstraction has 5839 states and 7794 transitions. [2022-11-25 15:49:31,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:31,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 7794 transitions. [2022-11-25 15:49:31,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 15:49:31,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:31,997 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] [2022-11-25 15:49:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 15:49:31,998 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:31,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash -396168239, now seen corresponding path program 1 times [2022-11-25 15:49:31,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:31,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307909346] [2022-11-25 15:49:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:31,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:32,092 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 15:49:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:32,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307909346] [2022-11-25 15:49:32,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307909346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:32,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:32,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318653405] [2022-11-25 15:49:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:32,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:32,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:32,095 INFO L87 Difference]: Start difference. First operand 5839 states and 7794 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:36,333 INFO L93 Difference]: Finished difference Result 15587 states and 20956 transitions. [2022-11-25 15:49:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:49:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-25 15:49:36,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:36,344 INFO L225 Difference]: With dead ends: 15587 [2022-11-25 15:49:36,344 INFO L226 Difference]: Without dead ends: 10433 [2022-11-25 15:49:36,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:36,349 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 100 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:36,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 610 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:49:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10433 states. [2022-11-25 15:49:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10433 to 9439. [2022-11-25 15:49:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9438 states have (on average 1.3276117821572366) internal successors, (12530), 9438 states have internal predecessors, (12530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 12530 transitions. [2022-11-25 15:49:40,130 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 12530 transitions. Word has length 73 [2022-11-25 15:49:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:40,131 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 12530 transitions. [2022-11-25 15:49:40,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 12530 transitions. [2022-11-25 15:49:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 15:49:40,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:40,132 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] [2022-11-25 15:49:40,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-25 15:49:40,133 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1606128063, now seen corresponding path program 1 times [2022-11-25 15:49:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:40,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582108330] [2022-11-25 15:49:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:49:40,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:40,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582108330] [2022-11-25 15:49:40,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582108330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:40,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:40,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:49:40,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835678057] [2022-11-25 15:49:40,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:40,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 15:49:40,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:40,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:49:40,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:49:40,327 INFO L87 Difference]: Start difference. First operand 9439 states and 12530 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:49:49,473 INFO L93 Difference]: Finished difference Result 20177 states and 26441 transitions. [2022-11-25 15:49:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:49:49,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-25 15:49:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:49:49,495 INFO L225 Difference]: With dead ends: 20177 [2022-11-25 15:49:49,495 INFO L226 Difference]: Without dead ends: 20175 [2022-11-25 15:49:49,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:49:49,498 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 366 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:49:49,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1500 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:49:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20175 states. [2022-11-25 15:49:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20175 to 10351. [2022-11-25 15:49:54,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10351 states, 10350 states have (on average 1.298743961352657) internal successors, (13442), 10350 states have internal predecessors, (13442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10351 states to 10351 states and 13442 transitions. [2022-11-25 15:49:54,181 INFO L78 Accepts]: Start accepts. Automaton has 10351 states and 13442 transitions. Word has length 75 [2022-11-25 15:49:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:49:54,181 INFO L495 AbstractCegarLoop]: Abstraction has 10351 states and 13442 transitions. [2022-11-25 15:49:54,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:49:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 10351 states and 13442 transitions. [2022-11-25 15:49:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 15:49:54,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:49:54,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:49:54,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-25 15:49:54,185 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:49:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:49:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash 824153179, now seen corresponding path program 1 times [2022-11-25 15:49:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:49:54,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561281312] [2022-11-25 15:49:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:49:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:49:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:49:54,240 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 15:49:54,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:49:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561281312] [2022-11-25 15:49:54,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561281312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:49:54,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:49:54,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:49:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170912755] [2022-11-25 15:49:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:49:54,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:49:54,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:49:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:49:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:49:54,243 INFO L87 Difference]: Start difference. First operand 10351 states and 13442 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:00,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:00,600 INFO L93 Difference]: Finished difference Result 24911 states and 32360 transitions. [2022-11-25 15:50:00,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:50:00,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-25 15:50:00,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:00,617 INFO L225 Difference]: With dead ends: 24911 [2022-11-25 15:50:00,617 INFO L226 Difference]: Without dead ends: 15245 [2022-11-25 15:50:00,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:50:00,624 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 223 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:00,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 459 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:00,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15245 states. [2022-11-25 15:50:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15245 to 15243. [2022-11-25 15:50:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15243 states, 15242 states have (on average 1.2826400734811705) internal successors, (19550), 15242 states have internal predecessors, (19550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:07,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15243 states to 15243 states and 19550 transitions. [2022-11-25 15:50:07,406 INFO L78 Accepts]: Start accepts. Automaton has 15243 states and 19550 transitions. Word has length 76 [2022-11-25 15:50:07,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:07,406 INFO L495 AbstractCegarLoop]: Abstraction has 15243 states and 19550 transitions. [2022-11-25 15:50:07,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:07,407 INFO L276 IsEmpty]: Start isEmpty. Operand 15243 states and 19550 transitions. [2022-11-25 15:50:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:50:07,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:07,409 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] [2022-11-25 15:50:07,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-25 15:50:07,410 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:50:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1756244585, now seen corresponding path program 1 times [2022-11-25 15:50:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:07,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791904873] [2022-11-25 15:50:07,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:07,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:07,558 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 15:50:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:07,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791904873] [2022-11-25 15:50:07,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791904873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:07,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:07,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:50:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991509529] [2022-11-25 15:50:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:07,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:50:07,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:07,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:50:07,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:50:07,561 INFO L87 Difference]: Start difference. First operand 15243 states and 19550 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:15,487 INFO L93 Difference]: Finished difference Result 22049 states and 28430 transitions. [2022-11-25 15:50:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:50:15,488 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:50:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:15,508 INFO L225 Difference]: With dead ends: 22049 [2022-11-25 15:50:15,508 INFO L226 Difference]: Without dead ends: 18429 [2022-11-25 15:50:15,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:50:15,513 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 691 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:15,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 978 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:50:15,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18429 states. [2022-11-25 15:50:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18429 to 17181. [2022-11-25 15:50:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17181 states, 17180 states have (on average 1.278812572759022) internal successors, (21970), 17180 states have internal predecessors, (21970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 21970 transitions. [2022-11-25 15:50:22,888 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 21970 transitions. Word has length 77 [2022-11-25 15:50:22,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:22,888 INFO L495 AbstractCegarLoop]: Abstraction has 17181 states and 21970 transitions. [2022-11-25 15:50:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 21970 transitions. [2022-11-25 15:50:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 15:50:22,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:22,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:22,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 15:50:22,890 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:50:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash -51175098, now seen corresponding path program 1 times [2022-11-25 15:50:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:22,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026769942] [2022-11-25 15:50:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:22,940 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 15:50:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:22,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026769942] [2022-11-25 15:50:22,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026769942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:22,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:22,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:50:22,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819006317] [2022-11-25 15:50:22,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:22,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:50:22,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:22,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:50:22,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:50:22,943 INFO L87 Difference]: Start difference. First operand 17181 states and 21970 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:34,248 INFO L93 Difference]: Finished difference Result 33786 states and 43238 transitions. [2022-11-25 15:50:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:50:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-25 15:50:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:34,280 INFO L225 Difference]: With dead ends: 33786 [2022-11-25 15:50:34,280 INFO L226 Difference]: Without dead ends: 25841 [2022-11-25 15:50:34,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:50:34,288 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 225 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:34,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 360 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:50:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25841 states. [2022-11-25 15:50:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25841 to 16830. [2022-11-25 15:50:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16830 states, 16829 states have (on average 1.2764870164596827) internal successors, (21482), 16829 states have internal predecessors, (21482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16830 states to 16830 states and 21482 transitions. [2022-11-25 15:50:41,645 INFO L78 Accepts]: Start accepts. Automaton has 16830 states and 21482 transitions. Word has length 80 [2022-11-25 15:50:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:50:41,645 INFO L495 AbstractCegarLoop]: Abstraction has 16830 states and 21482 transitions. [2022-11-25 15:50:41,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16830 states and 21482 transitions. [2022-11-25 15:50:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 15:50:41,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:50:41,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:50:41,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-25 15:50:41,651 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:50:41,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:50:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1593588101, now seen corresponding path program 1 times [2022-11-25 15:50:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:50:41,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828286097] [2022-11-25 15:50:41,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:50:41,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:50:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:50:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:50:41,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:50:41,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828286097] [2022-11-25 15:50:41,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828286097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:50:42,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:50:42,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 15:50:42,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379179712] [2022-11-25 15:50:42,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:50:42,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 15:50:42,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:50:42,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 15:50:42,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 15:50:42,002 INFO L87 Difference]: Start difference. First operand 16830 states and 21482 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:50:59,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:50:59,209 INFO L93 Difference]: Finished difference Result 44945 states and 57203 transitions. [2022-11-25 15:50:59,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 15:50:59,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-25 15:50:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:50:59,256 INFO L225 Difference]: With dead ends: 44945 [2022-11-25 15:50:59,257 INFO L226 Difference]: Without dead ends: 36729 [2022-11-25 15:50:59,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-11-25 15:50:59,267 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1419 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 15:50:59,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1363 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 15:50:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36729 states. [2022-11-25 15:51:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36729 to 16764. [2022-11-25 15:51:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16764 states, 16763 states have (on average 1.2768597506412933) internal successors, (21404), 16763 states have internal predecessors, (21404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16764 states to 16764 states and 21404 transitions. [2022-11-25 15:51:07,280 INFO L78 Accepts]: Start accepts. Automaton has 16764 states and 21404 transitions. Word has length 95 [2022-11-25 15:51:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:51:07,280 INFO L495 AbstractCegarLoop]: Abstraction has 16764 states and 21404 transitions. [2022-11-25 15:51:07,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:51:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 16764 states and 21404 transitions. [2022-11-25 15:51:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-25 15:51:07,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:51:07,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:51:07,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-25 15:51:07,286 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-25 15:51:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:51:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash 670186457, now seen corresponding path program 1 times [2022-11-25 15:51:07,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:51:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452461881] [2022-11-25 15:51:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:51:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:51:07,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452461881] [2022-11-25 15:51:07,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452461881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:51:07,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793195318] [2022-11-25 15:51:07,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:51:07,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:51:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:51:07,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:51:07,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56c1acf1-836f-4a59-998d-6b1b299ec0b7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:51:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:51:07,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 15:51:07,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:51:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:08,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:51:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:51:10,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793195318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:51:10,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:51:10,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 25 [2022-11-25 15:51:10,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123657209] [2022-11-25 15:51:10,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:51:10,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 15:51:10,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:51:10,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 15:51:10,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-11-25 15:51:10,124 INFO L87 Difference]: Start difference. First operand 16764 states and 21404 transitions. Second operand has 25 states, 25 states have (on average 10.84) internal successors, (271), 25 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:52:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:52:28,581 INFO L93 Difference]: Finished difference Result 134054 states and 170218 transitions. [2022-11-25 15:52:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-11-25 15:52:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.84) internal successors, (271), 25 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-25 15:52:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:52:28,806 INFO L225 Difference]: With dead ends: 134054 [2022-11-25 15:52:28,807 INFO L226 Difference]: Without dead ends: 117595 [2022-11-25 15:52:28,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10918 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5187, Invalid=22535, Unknown=0, NotChecked=0, Total=27722 [2022-11-25 15:52:28,853 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 7970 mSDsluCounter, 3300 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7970 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 4300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 15:52:28,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7970 Valid, 3651 Invalid, 4300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [71 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 15:52:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117595 states.