./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc --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 be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc --- 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-5e519f3 [2022-11-02 20:08:07,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:08:07,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:08:07,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:08:07,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:08:07,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:08:07,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:08:07,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:08:07,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:08:07,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:08:07,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:08:07,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:08:07,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:08:07,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:08:07,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:08:07,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:08:07,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:08:07,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:08:07,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:08:07,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:08:07,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:08:07,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:08:07,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:08:07,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:08:07,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:08:07,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:08:07,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:08:07,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:08:07,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:08:07,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:08:07,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:08:07,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:08:07,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:08:07,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:08:07,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:08:07,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:08:07,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:08:07,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:08:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:08:07,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:08:07,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:08:07,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:08:07,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:08:07,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:08:07,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:08:07,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:08:07,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:08:07,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:08:07,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:08:07,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:08:07,420 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:08:07,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:08:07,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:08:07,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:08:07,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:08:07,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:08:07,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:07,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:08:07,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:08:07,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:08:07,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:08:07,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:08:07,425 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:08:07,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:08:07,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:08:07,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be26aee373dea132861f472d332ff07e499ea6fa9932dcbe3fa1a7df50848fdc [2022-11-02 20:08:07,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:08:07,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:08:07,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:08:07,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:08:07,814 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:08:07,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 20:08:07,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/data/ba245be53/9d8040cd6f4f440f96c16ff283154fec/FLAGc5fd90486 [2022-11-02 20:08:08,676 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:08:08,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 20:08:08,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/data/ba245be53/9d8040cd6f4f440f96c16ff283154fec/FLAGc5fd90486 [2022-11-02 20:08:08,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/data/ba245be53/9d8040cd6f4f440f96c16ff283154fec [2022-11-02 20:08:08,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:08:08,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:08:08,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:08,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:08:08,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:08:08,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:08" (1/1) ... [2022-11-02 20:08:08,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5238d0ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:08, skipping insertion in model container [2022-11-02 20:08:08,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:08:08" (1/1) ... [2022-11-02 20:08:08,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:08:09,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:08:09,527 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2022-11-02 20:08:09,542 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2022-11-02 20:08:09,563 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2022-11-02 20:08:09,580 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2022-11-02 20:08:09,722 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2022-11-02 20:08:09,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:09,861 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:08:10,012 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15187,15200] [2022-11-02 20:08:10,024 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15834,15847] [2022-11-02 20:08:10,042 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17175,17188] [2022-11-02 20:08:10,056 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18235,18248] [2022-11-02 20:08:10,133 WARN L230 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_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27520,27533] [2022-11-02 20:08:10,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:08:10,209 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:08:10,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10 WrapperNode [2022-11-02 20:08:10,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:08:10,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:10,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:08:10,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:08:10,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,363 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1659 [2022-11-02 20:08:10,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:08:10,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:08:10,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:08:10,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:08:10,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,449 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:08:10,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:08:10,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:08:10,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:08:10,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (1/1) ... [2022-11-02 20:08:10,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:08:10,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:08:10,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:08:10,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2f073f9-a45e-4ae4-8e8a-af6d12156a30/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:08:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:08:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:08:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:08:10,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:08:10,808 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:08:10,811 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:08:12,234 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:08:12,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:08:12,259 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:08:12,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:12 BoogieIcfgContainer [2022-11-02 20:08:12,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:08:12,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:08:12,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:08:12,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:08:12,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:08:08" (1/3) ... [2022-11-02 20:08:12,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d659528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:12, skipping insertion in model container [2022-11-02 20:08:12,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:08:10" (2/3) ... [2022-11-02 20:08:12,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d659528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:08:12, skipping insertion in model container [2022-11-02 20:08:12,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:08:12" (3/3) ... [2022-11-02 20:08:12,285 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-02 20:08:12,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:08:12,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-02 20:08:12,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:08:12,428 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;@747698a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:08:12,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:08:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 400 states, 394 states have (on average 1.8121827411167513) internal successors, (714), 399 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:08:12,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:12,455 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] [2022-11-02 20:08:12,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:12,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1495225560, now seen corresponding path program 1 times [2022-11-02 20:08:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076846295] [2022-11-02 20:08:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:13,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:13,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076846295] [2022-11-02 20:08:13,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076846295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:13,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:13,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:13,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759627439] [2022-11-02 20:08:13,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:13,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:13,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:13,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:13,445 INFO L87 Difference]: Start difference. First operand has 400 states, 394 states have (on average 1.8121827411167513) internal successors, (714), 399 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 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) [2022-11-02 20:08:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:13,754 INFO L93 Difference]: Finished difference Result 737 states and 1302 transitions. [2022-11-02 20:08:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:13,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 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 [2022-11-02 20:08:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:13,775 INFO L225 Difference]: With dead ends: 737 [2022-11-02 20:08:13,776 INFO L226 Difference]: Without dead ends: 603 [2022-11-02 20:08:13,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:13,784 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 437 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:13,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1272 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:08:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-11-02 20:08:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 601. [2022-11-02 20:08:13,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 596 states have (on average 1.4815436241610738) internal successors, (883), 600 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 883 transitions. [2022-11-02 20:08:13,882 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 883 transitions. Word has length 145 [2022-11-02 20:08:13,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:13,884 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 883 transitions. [2022-11-02 20:08:13,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 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) [2022-11-02 20:08:13,884 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 883 transitions. [2022-11-02 20:08:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-02 20:08:13,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:13,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:13,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:08:13,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1494794584, now seen corresponding path program 1 times [2022-11-02 20:08:13,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:13,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201171284] [2022-11-02 20:08:13,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:13,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:14,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:14,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201171284] [2022-11-02 20:08:14,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201171284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:14,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:14,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803717005] [2022-11-02 20:08:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:14,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:14,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:14,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:14,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:14,552 INFO L87 Difference]: Start difference. First operand 601 states and 883 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) [2022-11-02 20:08:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:14,781 INFO L93 Difference]: Finished difference Result 1766 states and 2586 transitions. [2022-11-02 20:08:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:14,781 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 [2022-11-02 20:08:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:14,790 INFO L225 Difference]: With dead ends: 1766 [2022-11-02 20:08:14,790 INFO L226 Difference]: Without dead ends: 1174 [2022-11-02 20:08:14,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:14,798 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1222 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:14,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1451 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-11-02 20:08:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1134. [2022-11-02 20:08:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1129 states have (on average 1.4720992028343667) internal successors, (1662), 1133 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1662 transitions. [2022-11-02 20:08:14,915 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1662 transitions. Word has length 145 [2022-11-02 20:08:14,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:14,918 INFO L495 AbstractCegarLoop]: Abstraction has 1134 states and 1662 transitions. [2022-11-02 20:08:14,918 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) [2022-11-02 20:08:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1662 transitions. [2022-11-02 20:08:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 20:08:14,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:14,931 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] [2022-11-02 20:08:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:08:14,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1642675868, now seen corresponding path program 1 times [2022-11-02 20:08:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348593085] [2022-11-02 20:08:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:15,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:15,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348593085] [2022-11-02 20:08:15,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348593085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:15,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:15,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:15,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821135517] [2022-11-02 20:08:15,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:15,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:15,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:15,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:15,061 INFO L87 Difference]: Start difference. First operand 1134 states and 1662 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) [2022-11-02 20:08:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:15,271 INFO L93 Difference]: Finished difference Result 3364 states and 4924 transitions. [2022-11-02 20:08:15,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:15,272 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 [2022-11-02 20:08:15,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:15,285 INFO L225 Difference]: With dead ends: 3364 [2022-11-02 20:08:15,285 INFO L226 Difference]: Without dead ends: 2258 [2022-11-02 20:08:15,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:15,290 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 559 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:15,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 1397 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:15,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-11-02 20:08:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1136. [2022-11-02 20:08:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1131 states have (on average 1.471264367816092) internal successors, (1664), 1135 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1664 transitions. [2022-11-02 20:08:15,399 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1664 transitions. Word has length 146 [2022-11-02 20:08:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:15,400 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1664 transitions. [2022-11-02 20:08:15,400 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) [2022-11-02 20:08:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1664 transitions. [2022-11-02 20:08:15,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-02 20:08:15,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:15,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:15,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:08:15,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:15,413 INFO L85 PathProgramCache]: Analyzing trace with hash -341862217, now seen corresponding path program 1 times [2022-11-02 20:08:15,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:15,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352056904] [2022-11-02 20:08:15,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:15,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352056904] [2022-11-02 20:08:15,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352056904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:15,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:15,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:15,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356339676] [2022-11-02 20:08:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:15,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:15,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:15,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:15,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:15,895 INFO L87 Difference]: Start difference. First operand 1136 states and 1664 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:16,225 INFO L93 Difference]: Finished difference Result 3294 states and 4804 transitions. [2022-11-02 20:08:16,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:16,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-11-02 20:08:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:16,235 INFO L225 Difference]: With dead ends: 3294 [2022-11-02 20:08:16,236 INFO L226 Difference]: Without dead ends: 2188 [2022-11-02 20:08:16,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:16,248 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 1127 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:16,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1497 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2022-11-02 20:08:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2148. [2022-11-02 20:08:16,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2148 states, 2143 states have (on average 1.4563695753616426) internal successors, (3121), 2147 states have internal predecessors, (3121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 3121 transitions. [2022-11-02 20:08:16,527 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 3121 transitions. Word has length 147 [2022-11-02 20:08:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:16,528 INFO L495 AbstractCegarLoop]: Abstraction has 2148 states and 3121 transitions. [2022-11-02 20:08:16,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 3121 transitions. [2022-11-02 20:08:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 20:08:16,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:16,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:16,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:08:16,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:16,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -396436125, now seen corresponding path program 1 times [2022-11-02 20:08:16,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:16,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778529651] [2022-11-02 20:08:16,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:16,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778529651] [2022-11-02 20:08:16,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778529651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:16,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:16,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:16,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798845756] [2022-11-02 20:08:16,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:16,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:16,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:16,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:16,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:16,643 INFO L87 Difference]: Start difference. First operand 2148 states and 3121 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:17,198 INFO L93 Difference]: Finished difference Result 6368 states and 9243 transitions. [2022-11-02 20:08:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-11-02 20:08:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:17,216 INFO L225 Difference]: With dead ends: 6368 [2022-11-02 20:08:17,216 INFO L226 Difference]: Without dead ends: 4264 [2022-11-02 20:08:17,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:17,224 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 545 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:17,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1262 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:17,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2022-11-02 20:08:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 2152. [2022-11-02 20:08:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2147 states have (on average 1.455519329296693) internal successors, (3125), 2151 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3125 transitions. [2022-11-02 20:08:17,603 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3125 transitions. Word has length 148 [2022-11-02 20:08:17,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:17,605 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3125 transitions. [2022-11-02 20:08:17,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3125 transitions. [2022-11-02 20:08:17,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-02 20:08:17,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:17,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:17,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:08:17,618 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1864651882, now seen corresponding path program 1 times [2022-11-02 20:08:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902954443] [2022-11-02 20:08:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:17,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:18,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902954443] [2022-11-02 20:08:18,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902954443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:18,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:18,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:18,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036310513] [2022-11-02 20:08:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:18,087 INFO L87 Difference]: Start difference. First operand 2152 states and 3125 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:18,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:18,806 INFO L93 Difference]: Finished difference Result 6244 states and 9035 transitions. [2022-11-02 20:08:18,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:18,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-11-02 20:08:18,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:18,824 INFO L225 Difference]: With dead ends: 6244 [2022-11-02 20:08:18,824 INFO L226 Difference]: Without dead ends: 4140 [2022-11-02 20:08:18,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:18,830 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 1125 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:18,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1482 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-11-02 20:08:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 4100. [2022-11-02 20:08:19,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4095 states have (on average 1.4385836385836386) internal successors, (5891), 4099 states have internal predecessors, (5891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 5891 transitions. [2022-11-02 20:08:19,509 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 5891 transitions. Word has length 149 [2022-11-02 20:08:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:19,509 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 5891 transitions. [2022-11-02 20:08:19,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 5891 transitions. [2022-11-02 20:08:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 20:08:19,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:19,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:08:19,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -43098910, now seen corresponding path program 1 times [2022-11-02 20:08:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:19,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383382803] [2022-11-02 20:08:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:19,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:19,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:19,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383382803] [2022-11-02 20:08:19,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383382803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:19,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:19,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953589886] [2022-11-02 20:08:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:19,605 INFO L87 Difference]: Start difference. First operand 4100 states and 5891 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:20,558 INFO L93 Difference]: Finished difference Result 11864 states and 17091 transitions. [2022-11-02 20:08:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-11-02 20:08:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:20,593 INFO L225 Difference]: With dead ends: 11864 [2022-11-02 20:08:20,593 INFO L226 Difference]: Without dead ends: 8108 [2022-11-02 20:08:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:20,601 INFO L413 NwaCegarLoop]: 1098 mSDtfsCounter, 531 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:20,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 1659 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:20,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8108 states. [2022-11-02 20:08:21,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8108 to 4108. [2022-11-02 20:08:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 4103 states have (on average 1.4377284913477943) internal successors, (5899), 4107 states have internal predecessors, (5899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:21,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 5899 transitions. [2022-11-02 20:08:21,313 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 5899 transitions. Word has length 150 [2022-11-02 20:08:21,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:21,314 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 5899 transitions. [2022-11-02 20:08:21,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:21,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 5899 transitions. [2022-11-02 20:08:21,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-02 20:08:21,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:21,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:08:21,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:21,322 INFO L85 PathProgramCache]: Analyzing trace with hash 352323364, now seen corresponding path program 1 times [2022-11-02 20:08:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:21,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462742336] [2022-11-02 20:08:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:21,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:21,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:21,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462742336] [2022-11-02 20:08:21,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462742336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:21,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:21,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:08:21,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256687863] [2022-11-02 20:08:21,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:08:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:21,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:08:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:21,710 INFO L87 Difference]: Start difference. First operand 4108 states and 5899 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:22,826 INFO L93 Difference]: Finished difference Result 11938 states and 17074 transitions. [2022-11-02 20:08:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:22,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-11-02 20:08:22,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:22,868 INFO L225 Difference]: With dead ends: 11938 [2022-11-02 20:08:22,868 INFO L226 Difference]: Without dead ends: 7918 [2022-11-02 20:08:22,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:22,875 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1054 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:22,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1054 Valid, 1993 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:22,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7918 states. [2022-11-02 20:08:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7918 to 7878. [2022-11-02 20:08:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 7873 states have (on average 1.4169947923282102) internal successors, (11156), 7877 states have internal predecessors, (11156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 11156 transitions. [2022-11-02 20:08:24,255 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 11156 transitions. Word has length 151 [2022-11-02 20:08:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:24,256 INFO L495 AbstractCegarLoop]: Abstraction has 7878 states and 11156 transitions. [2022-11-02 20:08:24,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 11156 transitions. [2022-11-02 20:08:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-02 20:08:24,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:24,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:24,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:08:24,270 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:24,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 2046933493, now seen corresponding path program 1 times [2022-11-02 20:08:24,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:24,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745296777] [2022-11-02 20:08:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:24,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:24,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745296777] [2022-11-02 20:08:24,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745296777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:24,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:24,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907100168] [2022-11-02 20:08:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:24,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:24,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:24,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:24,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:24,637 INFO L87 Difference]: Start difference. First operand 7878 states and 11156 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:25,405 INFO L93 Difference]: Finished difference Result 13828 states and 19563 transitions. [2022-11-02 20:08:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:25,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-11-02 20:08:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:25,419 INFO L225 Difference]: With dead ends: 13828 [2022-11-02 20:08:25,420 INFO L226 Difference]: Without dead ends: 6024 [2022-11-02 20:08:25,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:25,429 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 65 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:25,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1741 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:25,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6024 states. [2022-11-02 20:08:26,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6024 to 6024. [2022-11-02 20:08:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 6019 states have (on average 1.4138561222794483) internal successors, (8510), 6023 states have internal predecessors, (8510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8510 transitions. [2022-11-02 20:08:26,282 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8510 transitions. Word has length 151 [2022-11-02 20:08:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:26,282 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 8510 transitions. [2022-11-02 20:08:26,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8510 transitions. [2022-11-02 20:08:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-02 20:08:26,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:26,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:26,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:08:26,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 491709017, now seen corresponding path program 1 times [2022-11-02 20:08:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993149504] [2022-11-02 20:08:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:26,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993149504] [2022-11-02 20:08:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993149504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:26,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:26,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961790545] [2022-11-02 20:08:26,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:26,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:26,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:26,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:26,398 INFO L87 Difference]: Start difference. First operand 6024 states and 8510 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:27,830 INFO L93 Difference]: Finished difference Result 13066 states and 18995 transitions. [2022-11-02 20:08:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-02 20:08:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:27,857 INFO L225 Difference]: With dead ends: 13066 [2022-11-02 20:08:27,857 INFO L226 Difference]: Without dead ends: 7666 [2022-11-02 20:08:27,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:27,865 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 225 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:27,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1143 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7666 states. [2022-11-02 20:08:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7666 to 7568. [2022-11-02 20:08:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7568 states, 7563 states have (on average 1.4541848472828243) internal successors, (10998), 7567 states have internal predecessors, (10998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7568 states to 7568 states and 10998 transitions. [2022-11-02 20:08:28,793 INFO L78 Accepts]: Start accepts. Automaton has 7568 states and 10998 transitions. Word has length 152 [2022-11-02 20:08:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:28,794 INFO L495 AbstractCegarLoop]: Abstraction has 7568 states and 10998 transitions. [2022-11-02 20:08:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 7568 states and 10998 transitions. [2022-11-02 20:08:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:28,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:28,804 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] [2022-11-02 20:08:28,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:08:28,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash 587839742, now seen corresponding path program 1 times [2022-11-02 20:08:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506070344] [2022-11-02 20:08:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:28,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:29,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506070344] [2022-11-02 20:08:29,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506070344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:29,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:29,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:08:29,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056217831] [2022-11-02 20:08:29,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:29,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:08:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:08:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:08:29,206 INFO L87 Difference]: Start difference. First operand 7568 states and 10998 transitions. Second operand has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:33,050 INFO L93 Difference]: Finished difference Result 22626 states and 34146 transitions. [2022-11-02 20:08:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:08:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:08:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:33,096 INFO L225 Difference]: With dead ends: 22626 [2022-11-02 20:08:33,096 INFO L226 Difference]: Without dead ends: 15820 [2022-11-02 20:08:33,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:08:33,108 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 6446 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6446 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:33,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6446 Valid, 1327 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:08:33,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15820 states. [2022-11-02 20:08:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15820 to 9124. [2022-11-02 20:08:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9124 states, 9119 states have (on average 1.4488430748985635) internal successors, (13212), 9123 states have internal predecessors, (13212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9124 states to 9124 states and 13212 transitions. [2022-11-02 20:08:34,577 INFO L78 Accepts]: Start accepts. Automaton has 9124 states and 13212 transitions. Word has length 155 [2022-11-02 20:08:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 9124 states and 13212 transitions. [2022-11-02 20:08:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.375) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 9124 states and 13212 transitions. [2022-11-02 20:08:34,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:08:34,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:34,588 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] [2022-11-02 20:08:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:08:34,588 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:34,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1193349574, now seen corresponding path program 1 times [2022-11-02 20:08:34,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:34,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45442799] [2022-11-02 20:08:34,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:35,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45442799] [2022-11-02 20:08:35,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45442799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:35,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:35,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719880626] [2022-11-02 20:08:35,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:35,030 INFO L87 Difference]: Start difference. First operand 9124 states and 13212 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:37,669 INFO L93 Difference]: Finished difference Result 24262 states and 35109 transitions. [2022-11-02 20:08:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:37,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:08:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:37,701 INFO L225 Difference]: With dead ends: 24262 [2022-11-02 20:08:37,702 INFO L226 Difference]: Without dead ends: 15272 [2022-11-02 20:08:37,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:37,713 INFO L413 NwaCegarLoop]: 940 mSDtfsCounter, 1121 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:37,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1121 Valid, 1439 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15272 states. [2022-11-02 20:08:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15272 to 15238. [2022-11-02 20:08:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15238 states, 15233 states have (on average 1.4307096435370577) internal successors, (21794), 15237 states have internal predecessors, (21794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21794 transitions. [2022-11-02 20:08:40,645 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21794 transitions. Word has length 155 [2022-11-02 20:08:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:40,646 INFO L495 AbstractCegarLoop]: Abstraction has 15238 states and 21794 transitions. [2022-11-02 20:08:40,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21794 transitions. [2022-11-02 20:08:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-02 20:08:40,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:40,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:08:40,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:08:40,663 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1194235350, now seen corresponding path program 1 times [2022-11-02 20:08:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:40,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675869116] [2022-11-02 20:08:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:40,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675869116] [2022-11-02 20:08:41,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675869116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:41,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:08:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204215014] [2022-11-02 20:08:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:41,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:08:41,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:08:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:08:41,144 INFO L87 Difference]: Start difference. First operand 15238 states and 21794 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) [2022-11-02 20:08:43,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:43,565 INFO L93 Difference]: Finished difference Result 27768 states and 39815 transitions. [2022-11-02 20:08:43,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:08:43,565 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 [2022-11-02 20:08:43,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:43,603 INFO L225 Difference]: With dead ends: 27768 [2022-11-02 20:08:43,603 INFO L226 Difference]: Without dead ends: 15238 [2022-11-02 20:08:43,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:08:43,623 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 53 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:43,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1696 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:08:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2022-11-02 20:08:46,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 15238. [2022-11-02 20:08:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15238 states, 15233 states have (on average 1.4306439965863587) internal successors, (21793), 15237 states have internal predecessors, (21793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15238 states to 15238 states and 21793 transitions. [2022-11-02 20:08:46,061 INFO L78 Accepts]: Start accepts. Automaton has 15238 states and 21793 transitions. Word has length 157 [2022-11-02 20:08:46,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:46,062 INFO L495 AbstractCegarLoop]: Abstraction has 15238 states and 21793 transitions. [2022-11-02 20:08:46,062 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) [2022-11-02 20:08:46,062 INFO L276 IsEmpty]: Start isEmpty. Operand 15238 states and 21793 transitions. [2022-11-02 20:08:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-02 20:08:46,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:46,075 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] [2022-11-02 20:08:46,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:08:46,075 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:46,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:46,076 INFO L85 PathProgramCache]: Analyzing trace with hash 930860647, now seen corresponding path program 1 times [2022-11-02 20:08:46,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:46,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333810536] [2022-11-02 20:08:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:46,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333810536] [2022-11-02 20:08:46,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333810536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:46,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:46,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881200114] [2022-11-02 20:08:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:46,209 INFO L87 Difference]: Start difference. First operand 15238 states and 21793 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) [2022-11-02 20:08:50,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:08:50,737 INFO L93 Difference]: Finished difference Result 37005 states and 53276 transitions. [2022-11-02 20:08:50,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:08:50,738 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 [2022-11-02 20:08:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:08:50,785 INFO L225 Difference]: With dead ends: 37005 [2022-11-02 20:08:50,786 INFO L226 Difference]: Without dead ends: 23221 [2022-11-02 20:08:50,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:50,803 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 477 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:08:50,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:08:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23221 states. [2022-11-02 20:08:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23221 to 23191. [2022-11-02 20:08:54,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23191 states, 23186 states have (on average 1.4120590011213663) internal successors, (32740), 23190 states have internal predecessors, (32740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:08:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23191 states to 23191 states and 32740 transitions. [2022-11-02 20:08:54,954 INFO L78 Accepts]: Start accepts. Automaton has 23191 states and 32740 transitions. Word has length 157 [2022-11-02 20:08:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:08:54,955 INFO L495 AbstractCegarLoop]: Abstraction has 23191 states and 32740 transitions. [2022-11-02 20:08:54,955 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) [2022-11-02 20:08:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 23191 states and 32740 transitions. [2022-11-02 20:08:54,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-02 20:08:54,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:08:54,973 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] [2022-11-02 20:08:54,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:08:54,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:08:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:08:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1036498047, now seen corresponding path program 1 times [2022-11-02 20:08:54,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:08:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184462115] [2022-11-02 20:08:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:08:54,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:08:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:08:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:08:55,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:08:55,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184462115] [2022-11-02 20:08:55,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184462115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:08:55,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:08:55,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:08:55,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663299959] [2022-11-02 20:08:55,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:08:55,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:08:55,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:08:55,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:08:55,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:08:55,085 INFO L87 Difference]: Start difference. First operand 23191 states and 32740 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:09:01,361 INFO L93 Difference]: Finished difference Result 53069 states and 76203 transitions. [2022-11-02 20:09:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:09:01,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 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 161 [2022-11-02 20:09:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:09:01,426 INFO L225 Difference]: With dead ends: 53069 [2022-11-02 20:09:01,426 INFO L226 Difference]: Without dead ends: 35071 [2022-11-02 20:09:01,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:09:01,446 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 297 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:09:01,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:09:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35071 states. [2022-11-02 20:09:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35071 to 32037. [2022-11-02 20:09:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32037 states, 32032 states have (on average 1.4502997002997002) internal successors, (46456), 32036 states have internal predecessors, (46456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32037 states to 32037 states and 46456 transitions. [2022-11-02 20:09:07,902 INFO L78 Accepts]: Start accepts. Automaton has 32037 states and 46456 transitions. Word has length 161 [2022-11-02 20:09:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:09:07,902 INFO L495 AbstractCegarLoop]: Abstraction has 32037 states and 46456 transitions. [2022-11-02 20:09:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:09:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32037 states and 46456 transitions. [2022-11-02 20:09:07,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-02 20:09:07,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:09:07,917 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] [2022-11-02 20:09:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:09:07,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-02 20:09:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:09:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2040023043, now seen corresponding path program 1 times [2022-11-02 20:09:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:09:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292359804] [2022-11-02 20:09:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:09:07,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:09:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:09:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:09:08,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:09:08,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292359804] [2022-11-02 20:09:08,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292359804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:09:08,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:09:08,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:09:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119048710] [2022-11-02 20:09:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:09:08,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:09:08,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:09:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:09:08,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:09:08,850 INFO L87 Difference]: Start difference. First operand 32037 states and 46456 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)