./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef92e2cd363e9cbada9057da9935ca7963cc6741d3474fe25a5d63d0a08b0a5f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:36:44,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:36:44,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:36:44,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:36:44,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:36:44,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:36:44,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:36:44,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:36:44,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:36:44,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:36:44,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:36:44,209 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:36:44,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:36:44,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:36:44,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:36:44,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:36:44,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:36:44,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:36:44,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:36:44,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:36:44,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:36:44,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:36:44,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:36:44,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:36:44,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:36:44,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:36:44,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:36:44,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:36:44,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:36:44,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:36:44,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:36:44,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:36:44,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:36:44,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:36:44,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:36:44,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:36:44,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:36:44,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:36:44,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:36:44,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:36:44,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:36:44,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:36:44,262 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:36:44,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:36:44,262 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:36:44,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:36:44,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:36:44,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:36:44,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:36:44,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:36:44,265 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:36:44,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:36:44,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:36:44,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:36:44,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:36:44,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:36:44,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:36:44,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:36:44,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:36:44,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:36:44,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:36:44,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:36:44,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:36:44,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:36:44,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:36:44,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:36:44,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:44,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:36:44,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:36:44,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:36:44,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:36:44,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:36:44,270 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:36:44,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:36:44,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:36:44,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef92e2cd363e9cbada9057da9935ca7963cc6741d3474fe25a5d63d0a08b0a5f [2022-11-16 12:36:44,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:36:44,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:36:44,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:36:44,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:36:44,621 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:36:44,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-16 12:36:44,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/data/7fcc67ecd/91c8c2688f794cf9b4bacb042681ffa0/FLAG560b4cf64 [2022-11-16 12:36:45,275 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:36:45,275 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-16 12:36:45,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/data/7fcc67ecd/91c8c2688f794cf9b4bacb042681ffa0/FLAG560b4cf64 [2022-11-16 12:36:45,597 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/data/7fcc67ecd/91c8c2688f794cf9b4bacb042681ffa0 [2022-11-16 12:36:45,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:36:45,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:36:45,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:45,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:36:45,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:36:45,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:45" (1/1) ... [2022-11-16 12:36:45,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9a77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:45, skipping insertion in model container [2022-11-16 12:36:45,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:36:45" (1/1) ... [2022-11-16 12:36:45,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:36:45,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:36:46,171 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15169,15182] [2022-11-16 12:36:46,190 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15816,15829] [2022-11-16 12:36:46,205 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17200,17213] [2022-11-16 12:36:46,218 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18176,18189] [2022-11-16 12:36:46,289 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27541,27554] [2022-11-16 12:36:46,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:46,362 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:36:46,468 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15169,15182] [2022-11-16 12:36:46,476 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15816,15829] [2022-11-16 12:36:46,489 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17200,17213] [2022-11-16 12:36:46,499 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18176,18189] [2022-11-16 12:36:46,564 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[27541,27554] [2022-11-16 12:36:46,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:36:46,644 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:36:46,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46 WrapperNode [2022-11-16 12:36:46,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:36:46,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:46,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:36:46,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:36:46,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,775 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1666 [2022-11-16 12:36:46,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:36:46,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:36:46,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:36:46,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:36:46,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,842 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:36:46,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:36:46,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:36:46,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:36:46,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (1/1) ... [2022-11-16 12:36:46,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:36:46,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:46,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:36:46,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f349bd2-5daf-4a12-8eba-29e88883d320/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:36:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:36:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:36:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:36:46,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:36:47,140 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:36:47,142 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:36:48,646 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:36:48,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:36:48,665 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:36:48,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:48 BoogieIcfgContainer [2022-11-16 12:36:48,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:36:48,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:36:48,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:36:48,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:36:48,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:36:45" (1/3) ... [2022-11-16 12:36:48,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c37545c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:48, skipping insertion in model container [2022-11-16 12:36:48,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:36:46" (2/3) ... [2022-11-16 12:36:48,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c37545c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:36:48, skipping insertion in model container [2022-11-16 12:36:48,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:36:48" (3/3) ... [2022-11-16 12:36:48,682 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2022-11-16 12:36:48,700 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:36:48,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-16 12:36:48,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:36:48,785 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;@fb7cba4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:36:48,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-16 12:36:48,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 411 states, 405 states have (on average 1.8098765432098765) internal successors, (733), 410 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 12:36:48,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:48,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:48,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash -430745720, now seen corresponding path program 1 times [2022-11-16 12:36:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:48,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013301634] [2022-11-16 12:36:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:48,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:49,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:49,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013301634] [2022-11-16 12:36:49,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013301634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:49,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:49,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745266440] [2022-11-16 12:36:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:49,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:49,579 INFO L87 Difference]: Start difference. First operand has 411 states, 405 states have (on average 1.8098765432098765) internal successors, (733), 410 states have internal predecessors, (733), 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 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:49,806 INFO L93 Difference]: Finished difference Result 753 states and 1326 transitions. [2022-11-16 12:36:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:49,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2022-11-16 12:36:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:49,841 INFO L225 Difference]: With dead ends: 753 [2022-11-16 12:36:49,842 INFO L226 Difference]: Without dead ends: 596 [2022-11-16 12:36:49,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:49,849 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 434 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:49,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1316 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-16 12:36:49,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 594. [2022-11-16 12:36:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 589 states have (on average 1.4736842105263157) internal successors, (868), 593 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 868 transitions. [2022-11-16 12:36:49,970 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 868 transitions. Word has length 147 [2022-11-16 12:36:49,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:49,983 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 868 transitions. [2022-11-16 12:36:49,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 868 transitions. [2022-11-16 12:36:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 12:36:49,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:49,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:36:49,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -734514301, now seen corresponding path program 1 times [2022-11-16 12:36:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:49,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964360998] [2022-11-16 12:36:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964360998] [2022-11-16 12:36:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964360998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:50,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:50,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758110891] [2022-11-16 12:36:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:50,339 INFO L87 Difference]: Start difference. First operand 594 states and 868 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:50,526 INFO L93 Difference]: Finished difference Result 1211 states and 1828 transitions. [2022-11-16 12:36:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:50,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 147 [2022-11-16 12:36:50,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:50,538 INFO L225 Difference]: With dead ends: 1211 [2022-11-16 12:36:50,538 INFO L226 Difference]: Without dead ends: 988 [2022-11-16 12:36:50,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:50,544 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 351 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:50,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1080 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2022-11-16 12:36:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 986. [2022-11-16 12:36:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 981 states have (on average 1.4933741080530072) internal successors, (1465), 985 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1465 transitions. [2022-11-16 12:36:50,611 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1465 transitions. Word has length 147 [2022-11-16 12:36:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:50,612 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 1465 transitions. [2022-11-16 12:36:50,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1465 transitions. [2022-11-16 12:36:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 12:36:50,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:50,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:50,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:36:50,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash -734945277, now seen corresponding path program 1 times [2022-11-16 12:36:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:50,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77689015] [2022-11-16 12:36:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:51,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77689015] [2022-11-16 12:36:51,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77689015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:51,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:51,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:36:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511617928] [2022-11-16 12:36:51,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:51,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:51,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:51,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:51,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:51,181 INFO L87 Difference]: Start difference. First operand 986 states and 1465 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:51,419 INFO L93 Difference]: Finished difference Result 2903 states and 4300 transitions. [2022-11-16 12:36:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:51,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 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 147 [2022-11-16 12:36:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:51,428 INFO L225 Difference]: With dead ends: 2903 [2022-11-16 12:36:51,428 INFO L226 Difference]: Without dead ends: 1926 [2022-11-16 12:36:51,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:51,431 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1333 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:51,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1333 Valid, 1413 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:51,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2022-11-16 12:36:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1878. [2022-11-16 12:36:51,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1873 states have (on average 1.4831820608649227) internal successors, (2778), 1877 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2778 transitions. [2022-11-16 12:36:51,558 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2778 transitions. Word has length 147 [2022-11-16 12:36:51,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:51,558 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2778 transitions. [2022-11-16 12:36:51,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2778 transitions. [2022-11-16 12:36:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-16 12:36:51,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:51,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:51,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:36:51,563 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash -464497969, now seen corresponding path program 1 times [2022-11-16 12:36:51,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:51,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170940948] [2022-11-16 12:36:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:51,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:51,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:51,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170940948] [2022-11-16 12:36:51,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170940948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:51,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:51,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477259447] [2022-11-16 12:36:51,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:51,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:51,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:51,651 INFO L87 Difference]: Start difference. First operand 1878 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:52,000 INFO L93 Difference]: Finished difference Result 5596 states and 8272 transitions. [2022-11-16 12:36:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:52,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 148 [2022-11-16 12:36:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:52,014 INFO L225 Difference]: With dead ends: 5596 [2022-11-16 12:36:52,015 INFO L226 Difference]: Without dead ends: 3746 [2022-11-16 12:36:52,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:52,028 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 573 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:52,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1729 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:36:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-11-16 12:36:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 1880. [2022-11-16 12:36:52,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1875 states have (on average 1.4826666666666666) internal successors, (2780), 1879 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:52,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2780 transitions. [2022-11-16 12:36:52,248 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2780 transitions. Word has length 148 [2022-11-16 12:36:52,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:52,249 INFO L495 AbstractCegarLoop]: Abstraction has 1880 states and 2780 transitions. [2022-11-16 12:36:52,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2780 transitions. [2022-11-16 12:36:52,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:36:52,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:52,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:52,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:36:52,254 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1286115900, now seen corresponding path program 1 times [2022-11-16 12:36:52,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:52,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096483414] [2022-11-16 12:36:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:52,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:52,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096483414] [2022-11-16 12:36:52,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096483414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:52,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:52,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067499454] [2022-11-16 12:36:52,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:52,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:52,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:52,396 INFO L87 Difference]: Start difference. First operand 1880 states and 2780 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:52,840 INFO L93 Difference]: Finished difference Result 4936 states and 7286 transitions. [2022-11-16 12:36:52,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:36:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2022-11-16 12:36:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:52,853 INFO L225 Difference]: With dead ends: 4936 [2022-11-16 12:36:52,853 INFO L226 Difference]: Without dead ends: 3249 [2022-11-16 12:36:52,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:52,859 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 508 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:52,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1599 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-11-16 12:36:53,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 3201. [2022-11-16 12:36:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3196 states have (on average 1.463078848560701) internal successors, (4676), 3200 states have internal predecessors, (4676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4676 transitions. [2022-11-16 12:36:53,221 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4676 transitions. Word has length 149 [2022-11-16 12:36:53,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:53,221 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 4676 transitions. [2022-11-16 12:36:53,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:53,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4676 transitions. [2022-11-16 12:36:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:36:53,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:53,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:53,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:36:53,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:53,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:53,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1559353287, now seen corresponding path program 1 times [2022-11-16 12:36:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:53,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432791667] [2022-11-16 12:36:53,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:53,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:53,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:53,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432791667] [2022-11-16 12:36:53,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432791667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:53,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:53,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:36:53,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694726871] [2022-11-16 12:36:53,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:36:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:53,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:36:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:53,656 INFO L87 Difference]: Start difference. First operand 3201 states and 4676 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:54,408 INFO L93 Difference]: Finished difference Result 9247 states and 13479 transitions. [2022-11-16 12:36:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:54,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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 149 [2022-11-16 12:36:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:54,429 INFO L225 Difference]: With dead ends: 9247 [2022-11-16 12:36:54,429 INFO L226 Difference]: Without dead ends: 6060 [2022-11-16 12:36:54,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:54,434 INFO L413 NwaCegarLoop]: 1016 mSDtfsCounter, 1098 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:54,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2076 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2022-11-16 12:36:55,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 6026. [2022-11-16 12:36:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 6021 states have (on average 1.4487626640093008) internal successors, (8723), 6025 states have internal predecessors, (8723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 8723 transitions. [2022-11-16 12:36:55,147 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 8723 transitions. Word has length 149 [2022-11-16 12:36:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:55,147 INFO L495 AbstractCegarLoop]: Abstraction has 6026 states and 8723 transitions. [2022-11-16 12:36:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 8723 transitions. [2022-11-16 12:36:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-16 12:36:55,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:55,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:55,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:36:55,158 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash 978797474, now seen corresponding path program 1 times [2022-11-16 12:36:55,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:55,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046081439] [2022-11-16 12:36:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:55,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046081439] [2022-11-16 12:36:55,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046081439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:55,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:55,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:36:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678518947] [2022-11-16 12:36:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:36:55,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:36:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:36:55,563 INFO L87 Difference]: Start difference. First operand 6026 states and 8723 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:56,930 INFO L93 Difference]: Finished difference Result 17607 states and 25392 transitions. [2022-11-16 12:36:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:36:56,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 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 149 [2022-11-16 12:36:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:56,987 INFO L225 Difference]: With dead ends: 17607 [2022-11-16 12:36:56,988 INFO L226 Difference]: Without dead ends: 11637 [2022-11-16 12:36:57,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:36:57,003 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1155 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:57,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1540 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:36:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11637 states. [2022-11-16 12:36:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11637 to 11577. [2022-11-16 12:36:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11577 states, 11572 states have (on average 1.4308676114759764) internal successors, (16558), 11576 states have internal predecessors, (16558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11577 states to 11577 states and 16558 transitions. [2022-11-16 12:36:58,517 INFO L78 Accepts]: Start accepts. Automaton has 11577 states and 16558 transitions. Word has length 149 [2022-11-16 12:36:58,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:58,518 INFO L495 AbstractCegarLoop]: Abstraction has 11577 states and 16558 transitions. [2022-11-16 12:36:58,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:36:58,518 INFO L276 IsEmpty]: Start isEmpty. Operand 11577 states and 16558 transitions. [2022-11-16 12:36:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 12:36:58,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:58,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:36:58,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:36:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -728227058, now seen corresponding path program 1 times [2022-11-16 12:36:58,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:58,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832873524] [2022-11-16 12:36:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:58,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:58,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832873524] [2022-11-16 12:36:58,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832873524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:58,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:58,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:36:58,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341150399] [2022-11-16 12:36:58,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:58,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:36:58,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:36:58,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:36:58,621 INFO L87 Difference]: Start difference. First operand 11577 states and 16558 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:00,795 INFO L93 Difference]: Finished difference Result 34579 states and 49441 transitions. [2022-11-16 12:37:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:00,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 150 [2022-11-16 12:37:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:00,855 INFO L225 Difference]: With dead ends: 34579 [2022-11-16 12:37:00,855 INFO L226 Difference]: Without dead ends: 23093 [2022-11-16 12:37:00,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:00,872 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 559 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:00,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1289 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23093 states. [2022-11-16 12:37:02,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23093 to 11587. [2022-11-16 12:37:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11587 states, 11582 states have (on average 1.4304955966154378) internal successors, (16568), 11586 states have internal predecessors, (16568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 16568 transitions. [2022-11-16 12:37:02,749 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 16568 transitions. Word has length 150 [2022-11-16 12:37:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:02,750 INFO L495 AbstractCegarLoop]: Abstraction has 11587 states and 16568 transitions. [2022-11-16 12:37:02,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 16568 transitions. [2022-11-16 12:37:02,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-16 12:37:02,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:02,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:37:02,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:02,765 INFO L85 PathProgramCache]: Analyzing trace with hash -478461247, now seen corresponding path program 1 times [2022-11-16 12:37:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:02,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420500686] [2022-11-16 12:37:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:03,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:03,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420500686] [2022-11-16 12:37:03,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420500686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:03,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:03,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065928967] [2022-11-16 12:37:03,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:03,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:03,095 INFO L87 Difference]: Start difference. First operand 11587 states and 16568 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:05,764 INFO L93 Difference]: Finished difference Result 33751 states and 48099 transitions. [2022-11-16 12:37:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:37:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 151 [2022-11-16 12:37:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:05,812 INFO L225 Difference]: With dead ends: 33751 [2022-11-16 12:37:05,812 INFO L226 Difference]: Without dead ends: 22265 [2022-11-16 12:37:05,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:05,827 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1183 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:05,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1497 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22265 states. [2022-11-16 12:37:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22265 to 22205. [2022-11-16 12:37:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22205 states, 22200 states have (on average 1.411891891891892) internal successors, (31344), 22204 states have internal predecessors, (31344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22205 states to 22205 states and 31344 transitions. [2022-11-16 12:37:08,441 INFO L78 Accepts]: Start accepts. Automaton has 22205 states and 31344 transitions. Word has length 151 [2022-11-16 12:37:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:08,442 INFO L495 AbstractCegarLoop]: Abstraction has 22205 states and 31344 transitions. [2022-11-16 12:37:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 22205 states and 31344 transitions. [2022-11-16 12:37:08,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-16 12:37:08,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:08,469 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:37:08,469 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2137159373, now seen corresponding path program 1 times [2022-11-16 12:37:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552635938] [2022-11-16 12:37:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:08,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:08,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552635938] [2022-11-16 12:37:08,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552635938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:08,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:08,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956753339] [2022-11-16 12:37:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:08,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:08,558 INFO L87 Difference]: Start difference. First operand 22205 states and 31344 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:12,411 INFO L93 Difference]: Finished difference Result 65403 states and 92484 transitions. [2022-11-16 12:37:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-16 12:37:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:12,509 INFO L225 Difference]: With dead ends: 65403 [2022-11-16 12:37:12,510 INFO L226 Difference]: Without dead ends: 44129 [2022-11-16 12:37:12,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:12,533 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 545 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:12,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1701 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44129 states. [2022-11-16 12:37:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44129 to 22225. [2022-11-16 12:37:15,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22220 states have (on average 1.4115211521152116) internal successors, (31364), 22224 states have internal predecessors, (31364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:15,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 31364 transitions. [2022-11-16 12:37:15,511 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 31364 transitions. Word has length 152 [2022-11-16 12:37:15,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:15,513 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 31364 transitions. [2022-11-16 12:37:15,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:15,513 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 31364 transitions. [2022-11-16 12:37:15,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-16 12:37:15,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:15,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:15,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:37:15,547 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:15,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:15,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2021361859, now seen corresponding path program 1 times [2022-11-16 12:37:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:15,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179426473] [2022-11-16 12:37:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:15,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179426473] [2022-11-16 12:37:15,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179426473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:15,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:15,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:37:15,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703042877] [2022-11-16 12:37:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:15,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:15,942 INFO L87 Difference]: Start difference. First operand 22225 states and 31364 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:18,508 INFO L93 Difference]: Finished difference Result 45181 states and 63572 transitions. [2022-11-16 12:37:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:37:18,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 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 153 [2022-11-16 12:37:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:18,558 INFO L225 Difference]: With dead ends: 45181 [2022-11-16 12:37:18,559 INFO L226 Difference]: Without dead ends: 23181 [2022-11-16 12:37:18,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:18,595 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1077 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1977 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:18,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1977 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:18,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23181 states. [2022-11-16 12:37:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23181 to 22747. [2022-11-16 12:37:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22747 states, 22742 states have (on average 1.405109489051095) internal successors, (31955), 22746 states have internal predecessors, (31955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22747 states to 22747 states and 31955 transitions. [2022-11-16 12:37:20,811 INFO L78 Accepts]: Start accepts. Automaton has 22747 states and 31955 transitions. Word has length 153 [2022-11-16 12:37:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:20,811 INFO L495 AbstractCegarLoop]: Abstraction has 22747 states and 31955 transitions. [2022-11-16 12:37:20,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 22747 states and 31955 transitions. [2022-11-16 12:37:20,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-16 12:37:20,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:20,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:20,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:37:20,839 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:20,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash 237133152, now seen corresponding path program 1 times [2022-11-16 12:37:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:20,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759231665] [2022-11-16 12:37:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759231665] [2022-11-16 12:37:21,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759231665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:21,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:21,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719271836] [2022-11-16 12:37:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:21,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:21,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:21,185 INFO L87 Difference]: Start difference. First operand 22747 states and 31955 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:23,017 INFO L93 Difference]: Finished difference Result 38991 states and 54828 transitions. [2022-11-16 12:37:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:37:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 153 [2022-11-16 12:37:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:23,042 INFO L225 Difference]: With dead ends: 38991 [2022-11-16 12:37:23,043 INFO L226 Difference]: Without dead ends: 16422 [2022-11-16 12:37:23,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:23,054 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 65 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:23,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1780 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:23,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16422 states. [2022-11-16 12:37:24,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16422 to 16422. [2022-11-16 12:37:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16422 states, 16417 states have (on average 1.4056161296217335) internal successors, (23076), 16421 states have internal predecessors, (23076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16422 states to 16422 states and 23076 transitions. [2022-11-16 12:37:24,545 INFO L78 Accepts]: Start accepts. Automaton has 16422 states and 23076 transitions. Word has length 153 [2022-11-16 12:37:24,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:24,546 INFO L495 AbstractCegarLoop]: Abstraction has 16422 states and 23076 transitions. [2022-11-16 12:37:24,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:24,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16422 states and 23076 transitions. [2022-11-16 12:37:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-16 12:37:24,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:24,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:37:24,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash 194231239, now seen corresponding path program 1 times [2022-11-16 12:37:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:24,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456627538] [2022-11-16 12:37:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:24,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:24,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456627538] [2022-11-16 12:37:24,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456627538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:24,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:24,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:24,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288990265] [2022-11-16 12:37:24,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:24,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:24,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:24,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:24,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:24,643 INFO L87 Difference]: Start difference. First operand 16422 states and 23076 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:26,795 INFO L93 Difference]: Finished difference Result 37692 states and 54421 transitions. [2022-11-16 12:37:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2022-11-16 12:37:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:26,821 INFO L225 Difference]: With dead ends: 37692 [2022-11-16 12:37:26,821 INFO L226 Difference]: Without dead ends: 22216 [2022-11-16 12:37:26,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:26,833 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 233 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:26,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1178 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:26,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22216 states. [2022-11-16 12:37:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22216 to 21734. [2022-11-16 12:37:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21734 states, 21729 states have (on average 1.451700492429472) internal successors, (31544), 21733 states have internal predecessors, (31544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:28,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21734 states to 21734 states and 31544 transitions. [2022-11-16 12:37:28,992 INFO L78 Accepts]: Start accepts. Automaton has 21734 states and 31544 transitions. Word has length 156 [2022-11-16 12:37:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:28,992 INFO L495 AbstractCegarLoop]: Abstraction has 21734 states and 31544 transitions. [2022-11-16 12:37:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 21734 states and 31544 transitions. [2022-11-16 12:37:29,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 12:37:29,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:29,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:29,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:37:29,001 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:29,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:29,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1124301261, now seen corresponding path program 1 times [2022-11-16 12:37:29,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:29,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940038314] [2022-11-16 12:37:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:29,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:29,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940038314] [2022-11-16 12:37:29,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940038314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:29,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:29,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539701371] [2022-11-16 12:37:29,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:29,099 INFO L87 Difference]: Start difference. First operand 21734 states and 31544 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:33,037 INFO L93 Difference]: Finished difference Result 58050 states and 84308 transitions. [2022-11-16 12:37:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2022-11-16 12:37:33,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:33,083 INFO L225 Difference]: With dead ends: 58050 [2022-11-16 12:37:33,083 INFO L226 Difference]: Without dead ends: 37794 [2022-11-16 12:37:33,099 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 [2022-11-16 12:37:33,100 INFO L413 NwaCegarLoop]: 1050 mSDtfsCounter, 492 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:33,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1570 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:37:33,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37794 states. [2022-11-16 12:37:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37794 to 37764. [2022-11-16 12:37:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37764 states, 37759 states have (on average 1.4282157896130723) internal successors, (53928), 37763 states have internal predecessors, (53928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53928 transitions. [2022-11-16 12:37:36,934 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53928 transitions. Word has length 159 [2022-11-16 12:37:36,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:36,935 INFO L495 AbstractCegarLoop]: Abstraction has 37764 states and 53928 transitions. [2022-11-16 12:37:36,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53928 transitions. [2022-11-16 12:37:36,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 12:37:36,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:36,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:37:36,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:36,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash -983486256, now seen corresponding path program 1 times [2022-11-16 12:37:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:36,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028752204] [2022-11-16 12:37:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:37,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:37,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028752204] [2022-11-16 12:37:37,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028752204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:37,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:37,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068418257] [2022-11-16 12:37:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:37:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:37:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:37,133 INFO L87 Difference]: Start difference. First operand 37764 states and 53928 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:42,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:42,554 INFO L93 Difference]: Finished difference Result 74104 states and 106291 transitions. [2022-11-16 12:37:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:37:42,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2022-11-16 12:37:42,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:42,599 INFO L225 Difference]: With dead ends: 74104 [2022-11-16 12:37:42,600 INFO L226 Difference]: Without dead ends: 37764 [2022-11-16 12:37:42,617 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 [2022-11-16 12:37:42,618 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1563 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:42,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 550 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:37:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37764 states. [2022-11-16 12:37:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37764 to 37764. [2022-11-16 12:37:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37764 states, 37759 states have (on average 1.4214359490452608) internal successors, (53672), 37763 states have internal predecessors, (53672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:47,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37764 states to 37764 states and 53672 transitions. [2022-11-16 12:37:47,129 INFO L78 Accepts]: Start accepts. Automaton has 37764 states and 53672 transitions. Word has length 159 [2022-11-16 12:37:47,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:47,129 INFO L495 AbstractCegarLoop]: Abstraction has 37764 states and 53672 transitions. [2022-11-16 12:37:47,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:47,129 INFO L276 IsEmpty]: Start isEmpty. Operand 37764 states and 53672 transitions. [2022-11-16 12:37:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 12:37:47,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:47,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:47,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:37:47,148 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -378867883, now seen corresponding path program 1 times [2022-11-16 12:37:47,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:47,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960184468] [2022-11-16 12:37:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:47,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960184468] [2022-11-16 12:37:47,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960184468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:47,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:47,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:37:47,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666011090] [2022-11-16 12:37:47,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:47,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:47,428 INFO L87 Difference]: Start difference. First operand 37764 states and 53672 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:51,991 INFO L93 Difference]: Finished difference Result 62159 states and 88561 transitions. [2022-11-16 12:37:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:37:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 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 159 [2022-11-16 12:37:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:52,041 INFO L225 Difference]: With dead ends: 62159 [2022-11-16 12:37:52,042 INFO L226 Difference]: Without dead ends: 33555 [2022-11-16 12:37:52,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:37:52,059 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 53 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:52,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1751 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:37:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33555 states. [2022-11-16 12:37:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33555 to 33555. [2022-11-16 12:37:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33555 states, 33550 states have (on average 1.4226527570789866) internal successors, (47730), 33554 states have internal predecessors, (47730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33555 states to 33555 states and 47730 transitions. [2022-11-16 12:37:56,125 INFO L78 Accepts]: Start accepts. Automaton has 33555 states and 47730 transitions. Word has length 159 [2022-11-16 12:37:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:56,126 INFO L495 AbstractCegarLoop]: Abstraction has 33555 states and 47730 transitions. [2022-11-16 12:37:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 33555 states and 47730 transitions. [2022-11-16 12:37:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-16 12:37:56,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:56,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:56,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:37:56,145 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-16 12:37:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash 2137792983, now seen corresponding path program 1 times [2022-11-16 12:37:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:56,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575652638] [2022-11-16 12:37:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:56,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575652638] [2022-11-16 12:37:56,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575652638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:56,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:56,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494435417] [2022-11-16 12:37:56,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:56,227 INFO L87 Difference]: Start difference. First operand 33555 states and 47730 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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)