./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8 --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 f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 --- 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-2329fc7 [2022-12-13 19:47:46,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:47:46,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:47:46,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:47:46,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:47:46,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:47:46,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:47:46,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:47:46,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:47:46,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:47:46,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:47:46,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:47:46,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:47:46,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:47:46,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:47:46,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:47:46,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:47:46,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:47:46,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:47:46,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:47:46,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:47:46,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:47:46,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:47:46,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:47:46,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:47:46,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:47:46,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:47:46,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:47:46,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:47:46,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:47:46,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:47:46,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:47:46,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:47:46,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:47:46,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:47:46,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:47:46,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:47:46,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:47:46,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:47:46,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:47:46,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:47:46,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:47:46,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:47:46,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:47:46,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:47:46,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:47:46,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:47:46,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:47:46,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:47:46,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:47:46,417 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:47:46,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:47:46,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:47:46,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:47:46,419 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:47:46,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:47:46,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:47:46,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:47:46,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:47:46,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:47:46,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:47:46,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:47:46,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:47:46,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:47:46,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:47:46,421 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:47:46,422 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:47:46,422 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f43d028ba6ad7288ae454484b752e467a139fa9128b5cbd8640720a39b09e4f4 [2022-12-13 19:47:46,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:47:46,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:47:46,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:47:46,608 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:47:46,608 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:47:46,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 19:47:49,109 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:47:49,293 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:47:49,294 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 19:47:49,302 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/data/a0edfa8be/ac4d71cb4ae24582af8ff0fdeabf6cec/FLAGee4c78c96 [2022-12-13 19:47:49,685 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/data/a0edfa8be/ac4d71cb4ae24582af8ff0fdeabf6cec [2022-12-13 19:47:49,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:47:49,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:47:49,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:47:49,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:47:49,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:47:49,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:47:49" (1/1) ... [2022-12-13 19:47:49,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f03511 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:49, skipping insertion in model container [2022-12-13 19:47:49,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:47:49" (1/1) ... [2022-12-13 19:47:49,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:47:49,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:47:49,928 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2022-12-13 19:47:49,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:47:49,988 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:47:50,051 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[14043,14056] [2022-12-13 19:47:50,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:47:50,101 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:47:50,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50 WrapperNode [2022-12-13 19:47:50,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:47:50,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:47:50,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:47:50,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:47:50,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,147 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1155 [2022-12-13 19:47:50,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:47:50,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:47:50,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:47:50,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:47:50,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,172 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:47:50,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:47:50,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:47:50,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:47:50,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (1/1) ... [2022-12-13 19:47:50,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:47:50,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:47:50,204 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:47:50,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900b0aeb-5fd9-4ef8-a8d6-a5f74ed50b52/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:47:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:47:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:47:50,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:47:50,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:47:50,339 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:47:50,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:47:50,986 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:47:50,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:47:50,998 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:47:51,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:47:51 BoogieIcfgContainer [2022-12-13 19:47:51,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:47:51,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:47:51,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:47:51,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:47:51,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:47:49" (1/3) ... [2022-12-13 19:47:51,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20234ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:47:51, skipping insertion in model container [2022-12-13 19:47:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:47:50" (2/3) ... [2022-12-13 19:47:51,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20234ee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:47:51, skipping insertion in model container [2022-12-13 19:47:51,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:47:51" (3/3) ... [2022-12-13 19:47:51,009 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 19:47:51,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:47:51,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:47:51,062 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:47:51,066 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;@33ed9782, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:47:51,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:47:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 308 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:51,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 19:47:51,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:51,078 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] [2022-12-13 19:47:51,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1732515754, now seen corresponding path program 1 times [2022-12-13 19:47:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897263359] [2022-12-13 19:47:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:51,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897263359] [2022-12-13 19:47:51,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897263359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:51,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:51,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:47:51,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905527860] [2022-12-13 19:47:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:47:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:47:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:47:51,646 INFO L87 Difference]: Start difference. First operand has 309 states, 299 states have (on average 1.7892976588628762) internal successors, (535), 308 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:51,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:51,798 INFO L93 Difference]: Finished difference Result 901 states and 1562 transitions. [2022-12-13 19:47:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:47:51,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-12-13 19:47:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:51,809 INFO L225 Difference]: With dead ends: 901 [2022-12-13 19:47:51,809 INFO L226 Difference]: Without dead ends: 575 [2022-12-13 19:47:51,812 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 [2022-12-13 19:47:51,814 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 1101 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:51,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1414 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:47:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-12-13 19:47:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 573. [2022-12-13 19:47:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 572 states have (on average 1.4195804195804196) internal successors, (812), 572 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 812 transitions. [2022-12-13 19:47:51,884 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 812 transitions. Word has length 143 [2022-12-13 19:47:51,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:51,885 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 812 transitions. [2022-12-13 19:47:51,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:51,885 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 812 transitions. [2022-12-13 19:47:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 19:47:51,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:51,888 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] [2022-12-13 19:47:51,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:47:51,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:51,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1916078526, now seen corresponding path program 1 times [2022-12-13 19:47:51,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:51,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804454748] [2022-12-13 19:47:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:51,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:51,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804454748] [2022-12-13 19:47:51,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804454748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:51,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:51,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:47:51,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101527515] [2022-12-13 19:47:51,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:51,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:47:51,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:51,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:47:51,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:47:51,966 INFO L87 Difference]: Start difference. First operand 573 states and 812 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:52,026 INFO L93 Difference]: Finished difference Result 1681 states and 2374 transitions. [2022-12-13 19:47:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:47:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2022-12-13 19:47:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:52,034 INFO L225 Difference]: With dead ends: 1681 [2022-12-13 19:47:52,034 INFO L226 Difference]: Without dead ends: 1136 [2022-12-13 19:47:52,036 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 [2022-12-13 19:47:52,038 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 413 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 905 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 [2022-12-13 19:47:52,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 905 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-12-13 19:47:52,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 575. [2022-12-13 19:47:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 1.4181184668989546) internal successors, (814), 574 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 814 transitions. [2022-12-13 19:47:52,092 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 814 transitions. Word has length 144 [2022-12-13 19:47:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:52,092 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 814 transitions. [2022-12-13 19:47:52,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 814 transitions. [2022-12-13 19:47:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 19:47:52,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:52,094 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] [2022-12-13 19:47:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:47:52,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:52,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 372219765, now seen corresponding path program 1 times [2022-12-13 19:47:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:52,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530432762] [2022-12-13 19:47:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:52,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:52,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530432762] [2022-12-13 19:47:52,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530432762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:52,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:52,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:47:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897440242] [2022-12-13 19:47:52,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:47:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:52,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:47:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:47:52,334 INFO L87 Difference]: Start difference. First operand 575 states and 814 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:52,495 INFO L93 Difference]: Finished difference Result 1641 states and 2306 transitions. [2022-12-13 19:47:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:47:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-12-13 19:47:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:52,499 INFO L225 Difference]: With dead ends: 1641 [2022-12-13 19:47:52,499 INFO L226 Difference]: Without dead ends: 1096 [2022-12-13 19:47:52,500 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 [2022-12-13 19:47:52,501 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 831 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1079 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 [2022-12-13 19:47:52,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1079 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:52,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-12-13 19:47:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1094. [2022-12-13 19:47:52,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1093 states have (on average 1.3943275388838061) internal successors, (1524), 1093 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1524 transitions. [2022-12-13 19:47:52,595 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1524 transitions. Word has length 145 [2022-12-13 19:47:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:52,595 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1524 transitions. [2022-12-13 19:47:52,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1524 transitions. [2022-12-13 19:47:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 19:47:52,597 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:52,598 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] [2022-12-13 19:47:52,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:47:52,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1286234625, now seen corresponding path program 1 times [2022-12-13 19:47:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:52,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35552839] [2022-12-13 19:47:52,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:52,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:52,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:52,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35552839] [2022-12-13 19:47:52,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35552839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:52,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:52,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:47:52,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385489860] [2022-12-13 19:47:52,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:47:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:47:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:47:52,667 INFO L87 Difference]: Start difference. First operand 1094 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:52,845 INFO L93 Difference]: Finished difference Result 3206 states and 4452 transitions. [2022-12-13 19:47:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:47:52,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-12-13 19:47:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:52,850 INFO L225 Difference]: With dead ends: 3206 [2022-12-13 19:47:52,851 INFO L226 Difference]: Without dead ends: 2156 [2022-12-13 19:47:52,852 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 [2022-12-13 19:47:52,852 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 399 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1235 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 [2022-12-13 19:47:52,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1235 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2156 states. [2022-12-13 19:47:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2156 to 1098. [2022-12-13 19:47:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.3928896991795807) internal successors, (1528), 1097 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1528 transitions. [2022-12-13 19:47:52,954 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1528 transitions. Word has length 146 [2022-12-13 19:47:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:52,954 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1528 transitions. [2022-12-13 19:47:52,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1528 transitions. [2022-12-13 19:47:52,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 19:47:52,957 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:52,957 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:47:52,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:47:52,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:52,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1557393051, now seen corresponding path program 1 times [2022-12-13 19:47:52,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:52,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745161186] [2022-12-13 19:47:52,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:52,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:53,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:53,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:53,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745161186] [2022-12-13 19:47:53,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745161186] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:53,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:53,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:47:53,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387932255] [2022-12-13 19:47:53,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:53,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:47:53,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:53,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:47:53,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:47:53,034 INFO L87 Difference]: Start difference. First operand 1098 states and 1528 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) [2022-12-13 19:47:53,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:53,236 INFO L93 Difference]: Finished difference Result 2898 states and 4048 transitions. [2022-12-13 19:47:53,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:47:53,237 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 [2022-12-13 19:47:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:53,241 INFO L225 Difference]: With dead ends: 2898 [2022-12-13 19:47:53,241 INFO L226 Difference]: Without dead ends: 2104 [2022-12-13 19:47:53,242 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 [2022-12-13 19:47:53,243 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 344 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:53,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1160 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2022-12-13 19:47:53,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2102. [2022-12-13 19:47:53,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2102 states, 2101 states have (on average 1.3745835316515944) internal successors, (2888), 2101 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:53,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2102 states to 2102 states and 2888 transitions. [2022-12-13 19:47:53,401 INFO L78 Accepts]: Start accepts. Automaton has 2102 states and 2888 transitions. Word has length 147 [2022-12-13 19:47:53,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:53,401 INFO L495 AbstractCegarLoop]: Abstraction has 2102 states and 2888 transitions. [2022-12-13 19:47:53,401 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) [2022-12-13 19:47:53,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2102 states and 2888 transitions. [2022-12-13 19:47:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 19:47:53,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:53,404 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] [2022-12-13 19:47:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:47:53,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1661864862, now seen corresponding path program 1 times [2022-12-13 19:47:53,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:53,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174918137] [2022-12-13 19:47:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:53,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:53,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:53,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174918137] [2022-12-13 19:47:53,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174918137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:53,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:47:53,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637577143] [2022-12-13 19:47:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:47:53,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:47:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:47:53,659 INFO L87 Difference]: Start difference. First operand 2102 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 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) [2022-12-13 19:47:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:53,972 INFO L93 Difference]: Finished difference Result 5862 states and 8049 transitions. [2022-12-13 19:47:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:47:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 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 [2022-12-13 19:47:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:53,980 INFO L225 Difference]: With dead ends: 5862 [2022-12-13 19:47:53,980 INFO L226 Difference]: Without dead ends: 3797 [2022-12-13 19:47:53,982 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 [2022-12-13 19:47:53,983 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 1221 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:53,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1075 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3797 states. [2022-12-13 19:47:54,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3797 to 3795. [2022-12-13 19:47:54,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3795 states, 3794 states have (on average 1.3605693199789142) internal successors, (5162), 3794 states have internal predecessors, (5162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3795 states to 3795 states and 5162 transitions. [2022-12-13 19:47:54,274 INFO L78 Accepts]: Start accepts. Automaton has 3795 states and 5162 transitions. Word has length 147 [2022-12-13 19:47:54,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:54,274 INFO L495 AbstractCegarLoop]: Abstraction has 3795 states and 5162 transitions. [2022-12-13 19:47:54,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 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) [2022-12-13 19:47:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3795 states and 5162 transitions. [2022-12-13 19:47:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 19:47:54,278 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:54,278 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] [2022-12-13 19:47:54,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:47:54,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:54,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1862693396, now seen corresponding path program 1 times [2022-12-13 19:47:54,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:54,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899914204] [2022-12-13 19:47:54,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:54,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:54,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899914204] [2022-12-13 19:47:54,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899914204] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:54,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:54,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:47:54,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646433063] [2022-12-13 19:47:54,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:47:54,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:47:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:47:54,480 INFO L87 Difference]: Start difference. First operand 3795 states and 5162 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) [2022-12-13 19:47:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:54,815 INFO L93 Difference]: Finished difference Result 7817 states and 10554 transitions. [2022-12-13 19:47:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:47:54,816 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 [2022-12-13 19:47:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:54,823 INFO L225 Difference]: With dead ends: 7817 [2022-12-13 19:47:54,823 INFO L226 Difference]: Without dead ends: 4139 [2022-12-13 19:47:54,826 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 [2022-12-13 19:47:54,826 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 820 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:54,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1063 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:54,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2022-12-13 19:47:55,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3999. [2022-12-13 19:47:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3998 states have (on average 1.3471735867933967) internal successors, (5386), 3998 states have internal predecessors, (5386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5386 transitions. [2022-12-13 19:47:55,152 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5386 transitions. Word has length 147 [2022-12-13 19:47:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:55,153 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5386 transitions. [2022-12-13 19:47:55,153 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) [2022-12-13 19:47:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5386 transitions. [2022-12-13 19:47:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-12-13 19:47:55,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:55,156 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] [2022-12-13 19:47:55,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:47:55,157 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash -292089536, now seen corresponding path program 1 times [2022-12-13 19:47:55,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532103851] [2022-12-13 19:47:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:55,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:55,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:55,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532103851] [2022-12-13 19:47:55,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532103851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:55,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:55,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:47:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428737923] [2022-12-13 19:47:55,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:55,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:47:55,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:55,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:47:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:47:55,205 INFO L87 Difference]: Start difference. First operand 3999 states and 5386 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) [2022-12-13 19:47:55,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:55,794 INFO L93 Difference]: Finished difference Result 11315 states and 15288 transitions. [2022-12-13 19:47:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:47:55,795 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 [2022-12-13 19:47:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:55,820 INFO L225 Difference]: With dead ends: 11315 [2022-12-13 19:47:55,820 INFO L226 Difference]: Without dead ends: 7873 [2022-12-13 19:47:55,826 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 [2022-12-13 19:47:55,827 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 385 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 916 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 [2022-12-13 19:47:55,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 916 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7873 states. [2022-12-13 19:47:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7873 to 4015. [2022-12-13 19:47:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 4014 states have (on average 1.345789735924265) internal successors, (5402), 4014 states have internal predecessors, (5402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 5402 transitions. [2022-12-13 19:47:56,296 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 5402 transitions. Word has length 148 [2022-12-13 19:47:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:56,296 INFO L495 AbstractCegarLoop]: Abstraction has 4015 states and 5402 transitions. [2022-12-13 19:47:56,296 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) [2022-12-13 19:47:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 5402 transitions. [2022-12-13 19:47:56,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 19:47:56,300 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:56,300 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] [2022-12-13 19:47:56,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:47:56,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:56,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1315250227, now seen corresponding path program 1 times [2022-12-13 19:47:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:56,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516653086] [2022-12-13 19:47:56,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:56,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:56,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:56,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516653086] [2022-12-13 19:47:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516653086] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:56,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:56,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:47:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118216862] [2022-12-13 19:47:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:47:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:47:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:47:56,472 INFO L87 Difference]: Start difference. First operand 4015 states and 5402 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) [2022-12-13 19:47:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:56,850 INFO L93 Difference]: Finished difference Result 8020 states and 10790 transitions. [2022-12-13 19:47:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:47:56,851 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 [2022-12-13 19:47:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:56,858 INFO L225 Difference]: With dead ends: 8020 [2022-12-13 19:47:56,858 INFO L226 Difference]: Without dead ends: 4013 [2022-12-13 19:47:56,861 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 [2022-12-13 19:47:56,861 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 65 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1305 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 [2022-12-13 19:47:56,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1305 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4013 states. [2022-12-13 19:47:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4013 to 4013. [2022-12-13 19:47:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4013 states, 4012 states have (on average 1.3454636091724825) internal successors, (5398), 4012 states have internal predecessors, (5398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:57,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 5398 transitions. [2022-12-13 19:47:57,140 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 5398 transitions. Word has length 149 [2022-12-13 19:47:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:57,141 INFO L495 AbstractCegarLoop]: Abstraction has 4013 states and 5398 transitions. [2022-12-13 19:47:57,141 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) [2022-12-13 19:47:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 5398 transitions. [2022-12-13 19:47:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 19:47:57,144 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:57,144 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] [2022-12-13 19:47:57,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:47:57,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash 867432798, now seen corresponding path program 1 times [2022-12-13 19:47:57,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:57,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334444082] [2022-12-13 19:47:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:57,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334444082] [2022-12-13 19:47:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334444082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:57,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:57,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:47:57,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063731346] [2022-12-13 19:47:57,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:47:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:57,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:47:57,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:47:57,197 INFO L87 Difference]: Start difference. First operand 4013 states and 5398 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) [2022-12-13 19:47:57,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:57,803 INFO L93 Difference]: Finished difference Result 8856 states and 11993 transitions. [2022-12-13 19:47:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:47:57,803 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 [2022-12-13 19:47:57,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:57,815 INFO L225 Difference]: With dead ends: 8856 [2022-12-13 19:47:57,815 INFO L226 Difference]: Without dead ends: 5942 [2022-12-13 19:47:57,817 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 [2022-12-13 19:47:57,817 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 349 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:57,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1132 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:47:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5942 states. [2022-12-13 19:47:58,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5942 to 5940. [2022-12-13 19:47:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5940 states, 5939 states have (on average 1.3226132345512713) internal successors, (7855), 5939 states have internal predecessors, (7855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 7855 transitions. [2022-12-13 19:47:58,259 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 7855 transitions. Word has length 149 [2022-12-13 19:47:58,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:58,259 INFO L495 AbstractCegarLoop]: Abstraction has 5940 states and 7855 transitions. [2022-12-13 19:47:58,259 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) [2022-12-13 19:47:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 7855 transitions. [2022-12-13 19:47:58,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 19:47:58,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:58,264 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] [2022-12-13 19:47:58,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:47:58,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1284666434, now seen corresponding path program 1 times [2022-12-13 19:47:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:58,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939605732] [2022-12-13 19:47:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:58,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939605732] [2022-12-13 19:47:58,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939605732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:58,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:58,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:47:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504754640] [2022-12-13 19:47:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:47:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:47:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:47:58,590 INFO L87 Difference]: Start difference. First operand 5940 states and 7855 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 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) [2022-12-13 19:48:01,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:01,269 INFO L93 Difference]: Finished difference Result 20355 states and 28774 transitions. [2022-12-13 19:48:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:48:01,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 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 [2022-12-13 19:48:01,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:01,289 INFO L225 Difference]: With dead ends: 20355 [2022-12-13 19:48:01,289 INFO L226 Difference]: Without dead ends: 16452 [2022-12-13 19:48:01,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:48:01,306 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 3751 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3751 Valid, 1947 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:48:01,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16452 states. [2022-12-13 19:48:02,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16452 to 12072. [2022-12-13 19:48:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 1.365172728025847) internal successors, (16479), 12071 states have internal predecessors, (16479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 16479 transitions. [2022-12-13 19:48:02,700 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 16479 transitions. Word has length 152 [2022-12-13 19:48:02,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:02,700 INFO L495 AbstractCegarLoop]: Abstraction has 12072 states and 16479 transitions. [2022-12-13 19:48:02,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 8 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) [2022-12-13 19:48:02,700 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 16479 transitions. [2022-12-13 19:48:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 19:48:02,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:02,707 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] [2022-12-13 19:48:02,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:48:02,707 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:02,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:02,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1824421472, now seen corresponding path program 1 times [2022-12-13 19:48:02,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:02,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060003735] [2022-12-13 19:48:02,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:02,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:02,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:02,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060003735] [2022-12-13 19:48:02,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060003735] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:02,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:02,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:48:02,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132067663] [2022-12-13 19:48:02,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:02,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:48:02,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:02,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:48:02,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:48:02,885 INFO L87 Difference]: Start difference. First operand 12072 states and 16479 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-12-13 19:48:04,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:04,635 INFO L93 Difference]: Finished difference Result 20400 states and 28973 transitions. [2022-12-13 19:48:04,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:48:04,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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 [2022-12-13 19:48:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:04,651 INFO L225 Difference]: With dead ends: 20400 [2022-12-13 19:48:04,652 INFO L226 Difference]: Without dead ends: 14250 [2022-12-13 19:48:04,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:48:04,657 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 704 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:04,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 773 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:48:04,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2022-12-13 19:48:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 14248. [2022-12-13 19:48:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 14247 states have (on average 1.3765003158559697) internal successors, (19611), 14247 states have internal predecessors, (19611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 19611 transitions. [2022-12-13 19:48:06,215 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 19611 transitions. Word has length 152 [2022-12-13 19:48:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:06,215 INFO L495 AbstractCegarLoop]: Abstraction has 14248 states and 19611 transitions. [2022-12-13 19:48:06,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-12-13 19:48:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 19611 transitions. [2022-12-13 19:48:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 19:48:06,221 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:06,222 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] [2022-12-13 19:48:06,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:48:06,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1841812308, now seen corresponding path program 1 times [2022-12-13 19:48:06,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:06,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829076493] [2022-12-13 19:48:06,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:06,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:06,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829076493] [2022-12-13 19:48:06,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829076493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:06,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:06,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:48:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472469788] [2022-12-13 19:48:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:48:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:48:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:48:06,411 INFO L87 Difference]: Start difference. First operand 14248 states and 19611 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-12-13 19:48:09,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:09,392 INFO L93 Difference]: Finished difference Result 36669 states and 50529 transitions. [2022-12-13 19:48:09,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:48:09,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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 [2022-12-13 19:48:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:09,414 INFO L225 Difference]: With dead ends: 36669 [2022-12-13 19:48:09,414 INFO L226 Difference]: Without dead ends: 22739 [2022-12-13 19:48:09,423 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 [2022-12-13 19:48:09,424 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 824 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:09,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1078 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:48:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22739 states. [2022-12-13 19:48:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22739 to 22737. [2022-12-13 19:48:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22737 states, 22736 states have (on average 1.3603976073187896) internal successors, (30930), 22736 states have internal predecessors, (30930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22737 states to 22737 states and 30930 transitions. [2022-12-13 19:48:12,392 INFO L78 Accepts]: Start accepts. Automaton has 22737 states and 30930 transitions. Word has length 152 [2022-12-13 19:48:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:12,393 INFO L495 AbstractCegarLoop]: Abstraction has 22737 states and 30930 transitions. [2022-12-13 19:48:12,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 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) [2022-12-13 19:48:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 22737 states and 30930 transitions. [2022-12-13 19:48:12,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 19:48:12,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:12,401 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] [2022-12-13 19:48:12,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:48:12,402 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:12,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -8512359, now seen corresponding path program 1 times [2022-12-13 19:48:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:12,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299671534] [2022-12-13 19:48:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299671534] [2022-12-13 19:48:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299671534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:12,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:12,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:48:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997630012] [2022-12-13 19:48:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:12,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:48:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:48:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:48:12,555 INFO L87 Difference]: Start difference. First operand 22737 states and 30930 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:14,875 INFO L93 Difference]: Finished difference Result 36091 states and 49154 transitions. [2022-12-13 19:48:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:48:14,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-12-13 19:48:14,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:14,894 INFO L225 Difference]: With dead ends: 36091 [2022-12-13 19:48:14,894 INFO L226 Difference]: Without dead ends: 18533 [2022-12-13 19:48:14,906 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 [2022-12-13 19:48:14,906 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 53 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1271 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 [2022-12-13 19:48:14,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1271 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:48:14,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18533 states. [2022-12-13 19:48:17,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18533 to 18533. [2022-12-13 19:48:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18533 states, 18532 states have (on average 1.3550075545003237) internal successors, (25111), 18532 states have internal predecessors, (25111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:17,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18533 states to 18533 states and 25111 transitions. [2022-12-13 19:48:17,373 INFO L78 Accepts]: Start accepts. Automaton has 18533 states and 25111 transitions. Word has length 154 [2022-12-13 19:48:17,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:17,373 INFO L495 AbstractCegarLoop]: Abstraction has 18533 states and 25111 transitions. [2022-12-13 19:48:17,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 18533 states and 25111 transitions. [2022-12-13 19:48:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:48:17,380 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:17,380 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] [2022-12-13 19:48:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:48:17,381 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1625804197, now seen corresponding path program 1 times [2022-12-13 19:48:17,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:17,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751655447] [2022-12-13 19:48:17,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:17,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:17,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751655447] [2022-12-13 19:48:17,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751655447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:17,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:17,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:48:17,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267599367] [2022-12-13 19:48:17,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:17,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:48:17,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:17,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:48:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:48:17,443 INFO L87 Difference]: Start difference. First operand 18533 states and 25111 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:21,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:21,989 INFO L93 Difference]: Finished difference Result 49145 states and 67427 transitions. [2022-12-13 19:48:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:48:21,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:48:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:22,022 INFO L225 Difference]: With dead ends: 49145 [2022-12-13 19:48:22,022 INFO L226 Difference]: Without dead ends: 35839 [2022-12-13 19:48:22,034 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 [2022-12-13 19:48:22,035 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 327 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:22,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 663 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:48:22,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35839 states. [2022-12-13 19:48:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35839 to 35837. [2022-12-13 19:48:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35837 states, 35836 states have (on average 1.3517412657662686) internal successors, (48441), 35836 states have internal predecessors, (48441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35837 states to 35837 states and 48441 transitions. [2022-12-13 19:48:26,936 INFO L78 Accepts]: Start accepts. Automaton has 35837 states and 48441 transitions. Word has length 157 [2022-12-13 19:48:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:26,936 INFO L495 AbstractCegarLoop]: Abstraction has 35837 states and 48441 transitions. [2022-12-13 19:48:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 35837 states and 48441 transitions. [2022-12-13 19:48:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:48:26,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:26,949 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] [2022-12-13 19:48:26,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:48:26,949 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:48:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -235404352, now seen corresponding path program 1 times [2022-12-13 19:48:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:26,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022667208] [2022-12-13 19:48:26,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:26,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:27,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022667208] [2022-12-13 19:48:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022667208] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:27,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:27,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 19:48:27,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378053108] [2022-12-13 19:48:27,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:27,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:48:27,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:27,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:48:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:48:27,212 INFO L87 Difference]: Start difference. First operand 35837 states and 48441 transitions. Second operand has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:48:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:50,205 INFO L93 Difference]: Finished difference Result 165513 states and 232392 transitions. [2022-12-13 19:48:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:48:50,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:48:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:50,397 INFO L225 Difference]: With dead ends: 165513 [2022-12-13 19:48:50,397 INFO L226 Difference]: Without dead ends: 135133 [2022-12-13 19:48:50,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2022-12-13 19:48:50,433 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 3925 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:50,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3925 Valid, 1849 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:48:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135133 states. [2022-12-13 19:49:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135133 to 94917. [2022-12-13 19:49:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94917 states, 94916 states have (on average 1.3726347507269585) internal successors, (130285), 94916 states have internal predecessors, (130285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:06,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94917 states to 94917 states and 130285 transitions. [2022-12-13 19:49:06,637 INFO L78 Accepts]: Start accepts. Automaton has 94917 states and 130285 transitions. Word has length 157 [2022-12-13 19:49:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:49:06,637 INFO L495 AbstractCegarLoop]: Abstraction has 94917 states and 130285 transitions. [2022-12-13 19:49:06,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.444444444444443) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 94917 states and 130285 transitions. [2022-12-13 19:49:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:49:06,668 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:49:06,669 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] [2022-12-13 19:49:06,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:49:06,669 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:49:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:49:06,670 INFO L85 PathProgramCache]: Analyzing trace with hash -408973622, now seen corresponding path program 1 times [2022-12-13 19:49:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:49:06,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567262702] [2022-12-13 19:49:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:49:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:49:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:49:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567262702] [2022-12-13 19:49:06,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567262702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:49:06,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:49:06,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:49:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116228631] [2022-12-13 19:49:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:49:06,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:49:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:49:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:49:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:49:06,900 INFO L87 Difference]: Start difference. First operand 94917 states and 130285 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:49:25,843 INFO L93 Difference]: Finished difference Result 182345 states and 256175 transitions. [2022-12-13 19:49:25,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:49:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:49:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:49:26,016 INFO L225 Difference]: With dead ends: 182345 [2022-12-13 19:49:26,016 INFO L226 Difference]: Without dead ends: 116071 [2022-12-13 19:49:26,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:49:26,066 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 470 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:49:26,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 803 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:49:26,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116071 states. [2022-12-13 19:49:48,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116071 to 116069. [2022-12-13 19:49:48,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116069 states, 116068 states have (on average 1.3725488506737429) internal successors, (159309), 116068 states have internal predecessors, (159309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116069 states to 116069 states and 159309 transitions. [2022-12-13 19:49:48,545 INFO L78 Accepts]: Start accepts. Automaton has 116069 states and 159309 transitions. Word has length 157 [2022-12-13 19:49:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:49:48,546 INFO L495 AbstractCegarLoop]: Abstraction has 116069 states and 159309 transitions. [2022-12-13 19:49:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:49:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 116069 states and 159309 transitions. [2022-12-13 19:49:48,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:49:48,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:49:48,573 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] [2022-12-13 19:49:48,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:49:48,573 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:49:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:49:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -574629782, now seen corresponding path program 1 times [2022-12-13 19:49:48,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:49:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064728406] [2022-12-13 19:49:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:49:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:49:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:49:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:49:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:49:48,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064728406] [2022-12-13 19:49:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064728406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:49:48,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:49:48,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:49:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813740865] [2022-12-13 19:49:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:49:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:49:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:49:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:49:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:49:48,657 INFO L87 Difference]: Start difference. First operand 116069 states and 159309 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:50:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:50:42,450 INFO L93 Difference]: Finished difference Result 322789 states and 455113 transitions. [2022-12-13 19:50:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:50:42,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:50:42,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:50:42,971 INFO L225 Difference]: With dead ends: 322789 [2022-12-13 19:50:42,971 INFO L226 Difference]: Without dead ends: 277411 [2022-12-13 19:50:43,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:50:43,050 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 944 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:50:43,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1222 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:50:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277411 states. [2022-12-13 19:51:28,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277411 to 218941. [2022-12-13 19:51:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218941 states, 218940 states have (on average 1.388969580707043) internal successors, (304101), 218940 states have internal predecessors, (304101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218941 states to 218941 states and 304101 transitions. [2022-12-13 19:51:28,870 INFO L78 Accepts]: Start accepts. Automaton has 218941 states and 304101 transitions. Word has length 157 [2022-12-13 19:51:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:51:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 218941 states and 304101 transitions. [2022-12-13 19:51:28,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:51:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 218941 states and 304101 transitions. [2022-12-13 19:51:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:51:28,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:51:28,904 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] [2022-12-13 19:51:28,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:51:28,904 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:51:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:51:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash -278556574, now seen corresponding path program 1 times [2022-12-13 19:51:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:51:28,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634038100] [2022-12-13 19:51:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:51:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:51:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:51:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:51:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:51:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634038100] [2022-12-13 19:51:28,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634038100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:51:28,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:51:28,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:51:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047946787] [2022-12-13 19:51:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:51:28,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:51:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:51:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:51:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:51:28,955 INFO L87 Difference]: Start difference. First operand 218941 states and 304101 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:52:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:52:33,944 INFO L93 Difference]: Finished difference Result 490323 states and 690511 transitions. [2022-12-13 19:52:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:52:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:52:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:52:34,567 INFO L225 Difference]: With dead ends: 490323 [2022-12-13 19:52:34,567 INFO L226 Difference]: Without dead ends: 302593 [2022-12-13 19:52:34,725 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 [2022-12-13 19:52:34,726 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 244 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:52:34,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 680 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:52:34,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302593 states. [2022-12-13 19:53:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302593 to 302591. [2022-12-13 19:53:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302591 states, 302590 states have (on average 1.3925542813708318) internal successors, (421373), 302590 states have internal predecessors, (421373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302591 states to 302591 states and 421373 transitions. [2022-12-13 19:53:44,330 INFO L78 Accepts]: Start accepts. Automaton has 302591 states and 421373 transitions. Word has length 157 [2022-12-13 19:53:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:53:44,330 INFO L495 AbstractCegarLoop]: Abstraction has 302591 states and 421373 transitions. [2022-12-13 19:53:44,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:53:44,330 INFO L276 IsEmpty]: Start isEmpty. Operand 302591 states and 421373 transitions. [2022-12-13 19:53:44,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 19:53:44,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:53:44,363 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] [2022-12-13 19:53:44,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:53:44,363 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:53:44,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:53:44,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1337887195, now seen corresponding path program 1 times [2022-12-13 19:53:44,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:53:44,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663370950] [2022-12-13 19:53:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:53:44,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:53:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:53:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:53:44,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:53:44,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663370950] [2022-12-13 19:53:44,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663370950] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:53:44,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:53:44,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:53:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329494363] [2022-12-13 19:53:44,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:53:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:53:44,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:53:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:53:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:53:44,699 INFO L87 Difference]: Start difference. First operand 302591 states and 421373 transitions. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:54:33,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:54:33,371 INFO L93 Difference]: Finished difference Result 535229 states and 744381 transitions. [2022-12-13 19:54:33,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:54:33,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-12-13 19:54:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:54:33,823 INFO L225 Difference]: With dead ends: 535229 [2022-12-13 19:54:33,823 INFO L226 Difference]: Without dead ends: 232708 [2022-12-13 19:54:34,085 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 [2022-12-13 19:54:34,085 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 43 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1237 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 [2022-12-13 19:54:34,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1237 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:54:34,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232708 states. [2022-12-13 19:55:21,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232708 to 232708. [2022-12-13 19:55:22,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232708 states, 232707 states have (on average 1.3884154752542897) internal successors, (323094), 232707 states have internal predecessors, (323094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232708 states to 232708 states and 323094 transitions. [2022-12-13 19:55:22,574 INFO L78 Accepts]: Start accepts. Automaton has 232708 states and 323094 transitions. Word has length 157 [2022-12-13 19:55:22,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:55:22,574 INFO L495 AbstractCegarLoop]: Abstraction has 232708 states and 323094 transitions. [2022-12-13 19:55:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:55:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 232708 states and 323094 transitions. [2022-12-13 19:55:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 19:55:22,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:55:22,599 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, 1, 1] [2022-12-13 19:55:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:55:22,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:55:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:55:22,600 INFO L85 PathProgramCache]: Analyzing trace with hash 272906296, now seen corresponding path program 1 times [2022-12-13 19:55:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:55:22,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568713499] [2022-12-13 19:55:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:55:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:55:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:55:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:55:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:55:22,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568713499] [2022-12-13 19:55:22,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568713499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:55:22,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:55:22,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:55:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747749890] [2022-12-13 19:55:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:55:22,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:55:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:55:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:55:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:55:22,677 INFO L87 Difference]: Start difference. First operand 232708 states and 323094 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:30,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:57:30,101 INFO L93 Difference]: Finished difference Result 778688 states and 1103310 transitions. [2022-12-13 19:57:30,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:57:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-12-13 19:57:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:57:31,327 INFO L225 Difference]: With dead ends: 778688 [2022-12-13 19:57:31,328 INFO L226 Difference]: Without dead ends: 578415 [2022-12-13 19:57:31,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:57:31,555 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1188 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:57:31,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 1943 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:57:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578415 states. [2022-12-13 19:58:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578415 to 362466. [2022-12-13 19:58:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362466 states, 362465 states have (on average 1.3967389954892198) internal successors, (506269), 362465 states have internal predecessors, (506269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362466 states to 362466 states and 506269 transitions. [2022-12-13 19:58:56,646 INFO L78 Accepts]: Start accepts. Automaton has 362466 states and 506269 transitions. Word has length 165 [2022-12-13 19:58:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:58:56,646 INFO L495 AbstractCegarLoop]: Abstraction has 362466 states and 506269 transitions. [2022-12-13 19:58:56,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 362466 states and 506269 transitions. [2022-12-13 19:58:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 19:58:56,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:58:56,670 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, 1, 1] [2022-12-13 19:58:56,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:58:56,670 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:58:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash -803206429, now seen corresponding path program 1 times [2022-12-13 19:58:56,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:56,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738868082] [2022-12-13 19:58:56,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:56,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:56,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:56,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738868082] [2022-12-13 19:58:56,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738868082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:56,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:56,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:58:56,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369017298] [2022-12-13 19:58:56,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:56,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:58:56,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:58:56,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:58:56,821 INFO L87 Difference]: Start difference. First operand 362466 states and 506269 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)