./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ --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 9fc8deb48660011a55df6a125b576e7008308183eeefddcba409d6b7b87cd69f --- 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-dbf71c6-m [2022-10-17 10:09:13,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:09:13,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:09:13,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:09:13,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:09:13,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:09:13,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:09:13,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:09:13,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:09:13,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:09:13,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:09:13,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:09:13,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:09:13,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:09:13,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:09:13,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:09:13,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:09:13,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:09:13,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:09:13,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:09:13,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:09:13,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:09:13,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:09:13,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:09:13,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:09:13,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:09:13,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:09:13,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:09:13,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:09:13,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:09:13,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:09:13,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:09:13,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:09:13,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:09:13,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:09:13,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:09:13,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:09:13,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:09:13,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:09:13,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:09:13,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:09:13,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:09:13,460 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:09:13,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:09:13,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:09:13,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:09:13,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:09:13,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:09:13,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:09:13,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:09:13,462 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:09:13,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:09:13,464 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:09:13,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:09:13,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:09:13,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:09:13,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:09:13,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:09:13,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:09:13,465 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:09:13,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:09:13,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:09:13,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:09:13,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:09:13,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:09:13,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:09:13,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:09:13,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:09:13,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:09:13,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:09:13,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:09:13,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:09:13,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:09:13,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:09:13,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:09:13,468 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_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc8deb48660011a55df6a125b576e7008308183eeefddcba409d6b7b87cd69f [2022-10-17 10:09:13,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:09:13,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:09:13,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:09:13,790 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:09:13,791 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:09:13,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-10-17 10:09:13,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/data/ce8cf26a5/cff9de92ab2d43f9a3561d4eec6f593d/FLAG9b192ebb7 [2022-10-17 10:09:14,509 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:09:14,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-10-17 10:09:14,535 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/data/ce8cf26a5/cff9de92ab2d43f9a3561d4eec6f593d/FLAG9b192ebb7 [2022-10-17 10:09:14,742 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/data/ce8cf26a5/cff9de92ab2d43f9a3561d4eec6f593d [2022-10-17 10:09:14,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:09:14,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:09:14,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:09:14,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:09:14,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:09:14,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:09:14" (1/1) ... [2022-10-17 10:09:14,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb2a480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:14, skipping insertion in model container [2022-10-17 10:09:14,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:09:14" (1/1) ... [2022-10-17 10:09:14,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:09:14,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:09:15,210 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_b2218546-6d71-4ccc-8516-3b5a76705e5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9863,9876] [2022-10-17 10:09:15,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:09:15,323 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:09:15,431 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_b2218546-6d71-4ccc-8516-3b5a76705e5a/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9863,9876] [2022-10-17 10:09:15,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:09:15,511 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:09:15,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15 WrapperNode [2022-10-17 10:09:15,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:09:15,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:09:15,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:09:15,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:09:15,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,617 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 875 [2022-10-17 10:09:15,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:09:15,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:09:15,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:09:15,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:09:15,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:09:15,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:09:15,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:09:15,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:09:15,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (1/1) ... [2022-10-17 10:09:15,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:09:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:09:15,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:09:15,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2218546-6d71-4ccc-8516-3b5a76705e5a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:09:15,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:09:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:09:15,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:09:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:09:16,054 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:09:16,057 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:09:17,180 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:09:17,194 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:09:17,194 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:09:17,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:09:17 BoogieIcfgContainer [2022-10-17 10:09:17,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:09:17,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:09:17,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:09:17,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:09:17,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:09:14" (1/3) ... [2022-10-17 10:09:17,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458dcee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:09:17, skipping insertion in model container [2022-10-17 10:09:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:09:15" (2/3) ... [2022-10-17 10:09:17,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458dcee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:09:17, skipping insertion in model container [2022-10-17 10:09:17,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:09:17" (3/3) ... [2022-10-17 10:09:17,210 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2022-10-17 10:09:17,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:09:17,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:09:17,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:09:17,304 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;@138d910d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:09:17,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:09:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 218 states, 216 states have (on average 1.7777777777777777) internal successors, (384), 217 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:09:17,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:17,330 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] [2022-10-17 10:09:17,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:17,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1207420229, now seen corresponding path program 1 times [2022-10-17 10:09:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:17,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520856302] [2022-10-17 10:09:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520856302] [2022-10-17 10:09:17,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520856302] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:17,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:17,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505330044] [2022-10-17 10:09:17,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:17,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:17,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:18,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:18,020 INFO L87 Difference]: Start difference. First operand has 218 states, 216 states have (on average 1.7777777777777777) internal successors, (384), 217 states have internal predecessors, (384), 0 states have call successors, (0), 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 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:18,225 INFO L93 Difference]: Finished difference Result 432 states and 754 transitions. [2022-10-17 10:09:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:18,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-10-17 10:09:18,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:18,252 INFO L225 Difference]: With dead ends: 432 [2022-10-17 10:09:18,252 INFO L226 Difference]: Without dead ends: 321 [2022-10-17 10:09:18,259 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 [2022-10-17 10:09:18,266 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 257 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:18,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 601 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:18,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-10-17 10:09:18,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2022-10-17 10:09:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.5345911949685536) internal successors, (488), 318 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 488 transitions. [2022-10-17 10:09:18,390 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 488 transitions. Word has length 94 [2022-10-17 10:09:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:18,392 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 488 transitions. [2022-10-17 10:09:18,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:18,393 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 488 transitions. [2022-10-17 10:09:18,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 10:09:18,405 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:18,406 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] [2022-10-17 10:09:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:09:18,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1721200426, now seen corresponding path program 1 times [2022-10-17 10:09:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:18,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747763151] [2022-10-17 10:09:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747763151] [2022-10-17 10:09:19,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747763151] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:19,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:19,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:19,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361191764] [2022-10-17 10:09:19,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:09:19,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:09:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:09:19,156 INFO L87 Difference]: Start difference. First operand 319 states and 488 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:19,303 INFO L93 Difference]: Finished difference Result 926 states and 1413 transitions. [2022-10-17 10:09:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:19,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-10-17 10:09:19,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:19,313 INFO L225 Difference]: With dead ends: 926 [2022-10-17 10:09:19,317 INFO L226 Difference]: Without dead ends: 616 [2022-10-17 10:09:19,318 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 [2022-10-17 10:09:19,320 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 641 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:19,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 810 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:19,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-10-17 10:09:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 614. [2022-10-17 10:09:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.5171288743882545) internal successors, (930), 613 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 930 transitions. [2022-10-17 10:09:19,383 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 930 transitions. Word has length 94 [2022-10-17 10:09:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:19,386 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 930 transitions. [2022-10-17 10:09:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,387 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 930 transitions. [2022-10-17 10:09:19,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-17 10:09:19,393 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:19,394 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] [2022-10-17 10:09:19,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:09:19,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1731479778, now seen corresponding path program 1 times [2022-10-17 10:09:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:19,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401587075] [2022-10-17 10:09:19,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:19,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:19,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401587075] [2022-10-17 10:09:19,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401587075] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:19,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:19,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496980190] [2022-10-17 10:09:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:19,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:19,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:19,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:19,548 INFO L87 Difference]: Start difference. First operand 614 states and 930 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:19,671 INFO L93 Difference]: Finished difference Result 1804 states and 2728 transitions. [2022-10-17 10:09:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-10-17 10:09:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:19,681 INFO L225 Difference]: With dead ends: 1804 [2022-10-17 10:09:19,682 INFO L226 Difference]: Without dead ends: 1218 [2022-10-17 10:09:19,688 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 [2022-10-17 10:09:19,696 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 308 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 934 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 [2022-10-17 10:09:19,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 934 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-10-17 10:09:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 616. [2022-10-17 10:09:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.5154471544715447) internal successors, (932), 615 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 932 transitions. [2022-10-17 10:09:19,814 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 932 transitions. Word has length 95 [2022-10-17 10:09:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 932 transitions. [2022-10-17 10:09:19,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 932 transitions. [2022-10-17 10:09:19,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:09:19,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:19,823 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] [2022-10-17 10:09:19,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:09:19,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 852300571, now seen corresponding path program 1 times [2022-10-17 10:09:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:19,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814980927] [2022-10-17 10:09:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:19,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:19,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814980927] [2022-10-17 10:09:19,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814980927] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:19,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:19,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910467907] [2022-10-17 10:09:19,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:19,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:19,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:19,972 INFO L87 Difference]: Start difference. First operand 616 states and 932 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:20,180 INFO L93 Difference]: Finished difference Result 1628 states and 2489 transitions. [2022-10-17 10:09:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-10-17 10:09:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:20,191 INFO L225 Difference]: With dead ends: 1628 [2022-10-17 10:09:20,192 INFO L226 Difference]: Without dead ends: 1190 [2022-10-17 10:09:20,195 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 [2022-10-17 10:09:20,206 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 251 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:20,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 856 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2022-10-17 10:09:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2022-10-17 10:09:20,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.502106149957877) internal successors, (1783), 1187 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1783 transitions. [2022-10-17 10:09:20,362 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1783 transitions. Word has length 96 [2022-10-17 10:09:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:20,365 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1783 transitions. [2022-10-17 10:09:20,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1783 transitions. [2022-10-17 10:09:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:09:20,367 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:20,368 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] [2022-10-17 10:09:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:09:20,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:20,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash 809550136, now seen corresponding path program 1 times [2022-10-17 10:09:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:20,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368107562] [2022-10-17 10:09:20,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:20,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368107562] [2022-10-17 10:09:20,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368107562] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:20,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:20,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:09:20,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929919871] [2022-10-17 10:09:20,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:20,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:09:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:20,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:09:20,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:09:20,797 INFO L87 Difference]: Start difference. First operand 1188 states and 1783 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:21,212 INFO L93 Difference]: Finished difference Result 3302 states and 4972 transitions. [2022-10-17 10:09:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:21,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-10-17 10:09:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:21,230 INFO L225 Difference]: With dead ends: 3302 [2022-10-17 10:09:21,231 INFO L226 Difference]: Without dead ends: 2128 [2022-10-17 10:09:21,233 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 [2022-10-17 10:09:21,234 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 683 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:21,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1088 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:21,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2022-10-17 10:09:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2126. [2022-10-17 10:09:21,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2126 states, 2125 states have (on average 1.4941176470588236) internal successors, (3175), 2125 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:21,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3175 transitions. [2022-10-17 10:09:21,564 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3175 transitions. Word has length 96 [2022-10-17 10:09:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:21,565 INFO L495 AbstractCegarLoop]: Abstraction has 2126 states and 3175 transitions. [2022-10-17 10:09:21,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3175 transitions. [2022-10-17 10:09:21,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:09:21,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:21,574 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] [2022-10-17 10:09:21,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:09:21,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:21,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1786118699, now seen corresponding path program 1 times [2022-10-17 10:09:21,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:21,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671060507] [2022-10-17 10:09:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:21,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:21,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671060507] [2022-10-17 10:09:21,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671060507] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:21,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:21,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:21,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75493649] [2022-10-17 10:09:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:09:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:09:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:09:21,854 INFO L87 Difference]: Start difference. First operand 2126 states and 3175 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:22,623 INFO L93 Difference]: Finished difference Result 6153 states and 9160 transitions. [2022-10-17 10:09:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:22,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-10-17 10:09:22,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:22,651 INFO L225 Difference]: With dead ends: 6153 [2022-10-17 10:09:22,652 INFO L226 Difference]: Without dead ends: 4083 [2022-10-17 10:09:22,656 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 [2022-10-17 10:09:22,657 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 626 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:22,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 790 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2022-10-17 10:09:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 4081. [2022-10-17 10:09:23,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.4747549019607844) internal successors, (6017), 4080 states have internal predecessors, (6017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 6017 transitions. [2022-10-17 10:09:23,285 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 6017 transitions. Word has length 96 [2022-10-17 10:09:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:23,286 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 6017 transitions. [2022-10-17 10:09:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 6017 transitions. [2022-10-17 10:09:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-17 10:09:23,292 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:23,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:09:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:09:23,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:23,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash -770610817, now seen corresponding path program 1 times [2022-10-17 10:09:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:23,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967077704] [2022-10-17 10:09:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:23,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:23,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967077704] [2022-10-17 10:09:23,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967077704] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:23,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:23,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:23,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968878487] [2022-10-17 10:09:23,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:23,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:23,378 INFO L87 Difference]: Start difference. First operand 4081 states and 6017 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:24,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:24,522 INFO L93 Difference]: Finished difference Result 12091 states and 17818 transitions. [2022-10-17 10:09:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-10-17 10:09:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:24,578 INFO L225 Difference]: With dead ends: 12091 [2022-10-17 10:09:24,579 INFO L226 Difference]: Without dead ends: 8101 [2022-10-17 10:09:24,587 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 [2022-10-17 10:09:24,588 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 294 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 701 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 [2022-10-17 10:09:24,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 701 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8101 states. [2022-10-17 10:09:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8101 to 4091. [2022-10-17 10:09:25,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4091 states, 4090 states have (on average 1.4735941320293398) internal successors, (6027), 4090 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4091 states to 4091 states and 6027 transitions. [2022-10-17 10:09:25,433 INFO L78 Accepts]: Start accepts. Automaton has 4091 states and 6027 transitions. Word has length 97 [2022-10-17 10:09:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:25,433 INFO L495 AbstractCegarLoop]: Abstraction has 4091 states and 6027 transitions. [2022-10-17 10:09:25,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:25,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4091 states and 6027 transitions. [2022-10-17 10:09:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-10-17 10:09:25,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:25,439 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] [2022-10-17 10:09:25,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:09:25,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2136208980, now seen corresponding path program 1 times [2022-10-17 10:09:25,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:25,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586504971] [2022-10-17 10:09:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:25,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:25,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586504971] [2022-10-17 10:09:25,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586504971] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:25,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:25,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:25,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727724549] [2022-10-17 10:09:25,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:25,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:09:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:25,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:09:25,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:09:25,693 INFO L87 Difference]: Start difference. First operand 4091 states and 6027 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:26,966 INFO L93 Difference]: Finished difference Result 11119 states and 16300 transitions. [2022-10-17 10:09:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-10-17 10:09:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:27,011 INFO L225 Difference]: With dead ends: 11119 [2022-10-17 10:09:27,011 INFO L226 Difference]: Without dead ends: 7129 [2022-10-17 10:09:27,018 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 [2022-10-17 10:09:27,018 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 620 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:27,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 779 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:27,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2022-10-17 10:09:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 7127. [2022-10-17 10:09:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7127 states, 7126 states have (on average 1.445551501543643) internal successors, (10301), 7126 states have internal predecessors, (10301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7127 states to 7127 states and 10301 transitions. [2022-10-17 10:09:28,198 INFO L78 Accepts]: Start accepts. Automaton has 7127 states and 10301 transitions. Word has length 98 [2022-10-17 10:09:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:28,198 INFO L495 AbstractCegarLoop]: Abstraction has 7127 states and 10301 transitions. [2022-10-17 10:09:28,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 7127 states and 10301 transitions. [2022-10-17 10:09:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-17 10:09:28,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:28,210 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] [2022-10-17 10:09:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:09:28,211 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1436194720, now seen corresponding path program 1 times [2022-10-17 10:09:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:28,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41160569] [2022-10-17 10:09:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:28,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:28,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41160569] [2022-10-17 10:09:28,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41160569] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:28,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:28,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:28,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495004530] [2022-10-17 10:09:28,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:28,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:28,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:28,312 INFO L87 Difference]: Start difference. First operand 7127 states and 10301 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:30,005 INFO L93 Difference]: Finished difference Result 20229 states and 29447 transitions. [2022-10-17 10:09:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-10-17 10:09:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:30,048 INFO L225 Difference]: With dead ends: 20229 [2022-10-17 10:09:30,049 INFO L226 Difference]: Without dead ends: 13977 [2022-10-17 10:09:30,059 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 [2022-10-17 10:09:30,061 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 280 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 906 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 [2022-10-17 10:09:30,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 906 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13977 states. [2022-10-17 10:09:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13977 to 7147. [2022-10-17 10:09:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7146 states have (on average 1.4443045060173523) internal successors, (10321), 7146 states have internal predecessors, (10321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:31,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 10321 transitions. [2022-10-17 10:09:31,675 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 10321 transitions. Word has length 99 [2022-10-17 10:09:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:31,675 INFO L495 AbstractCegarLoop]: Abstraction has 7147 states and 10321 transitions. [2022-10-17 10:09:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 10321 transitions. [2022-10-17 10:09:31,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-17 10:09:31,685 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:31,685 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] [2022-10-17 10:09:31,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:09:31,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:31,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -892178942, now seen corresponding path program 1 times [2022-10-17 10:09:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:31,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877764080] [2022-10-17 10:09:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:31,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877764080] [2022-10-17 10:09:31,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877764080] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:31,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:31,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:09:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522353013] [2022-10-17 10:09:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:31,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:09:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:09:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:09:31,965 INFO L87 Difference]: Start difference. First operand 7147 states and 10321 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:33,070 INFO L93 Difference]: Finished difference Result 14891 states and 21299 transitions. [2022-10-17 10:09:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:33,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-10-17 10:09:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:33,091 INFO L225 Difference]: With dead ends: 14891 [2022-10-17 10:09:33,091 INFO L226 Difference]: Without dead ends: 7969 [2022-10-17 10:09:33,101 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 [2022-10-17 10:09:33,102 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 673 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:33,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1068 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7969 states. [2022-10-17 10:09:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7969 to 7629. [2022-10-17 10:09:33,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7629 states, 7628 states have (on average 1.4226533822758258) internal successors, (10852), 7628 states have internal predecessors, (10852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 10852 transitions. [2022-10-17 10:09:34,014 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 10852 transitions. Word has length 100 [2022-10-17 10:09:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:34,015 INFO L495 AbstractCegarLoop]: Abstraction has 7629 states and 10852 transitions. [2022-10-17 10:09:34,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:34,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 10852 transitions. [2022-10-17 10:09:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-17 10:09:34,026 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:34,026 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] [2022-10-17 10:09:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:09:34,026 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:34,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1900231251, now seen corresponding path program 1 times [2022-10-17 10:09:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:34,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040232252] [2022-10-17 10:09:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:34,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040232252] [2022-10-17 10:09:34,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040232252] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:34,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:34,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311693707] [2022-10-17 10:09:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:09:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:34,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:09:34,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:09:34,269 INFO L87 Difference]: Start difference. First operand 7629 states and 10852 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:35,479 INFO L93 Difference]: Finished difference Result 12366 states and 17598 transitions. [2022-10-17 10:09:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:09:35,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-10-17 10:09:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:35,491 INFO L225 Difference]: With dead ends: 12366 [2022-10-17 10:09:35,491 INFO L226 Difference]: Without dead ends: 4909 [2022-10-17 10:09:35,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:09:35,501 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 65 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 985 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 [2022-10-17 10:09:35,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 985 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:09:35,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2022-10-17 10:09:36,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4909. [2022-10-17 10:09:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4909 states, 4908 states have (on average 1.4146291768541157) internal successors, (6943), 4908 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 6943 transitions. [2022-10-17 10:09:36,365 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 6943 transitions. Word has length 100 [2022-10-17 10:09:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 4909 states and 6943 transitions. [2022-10-17 10:09:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 6943 transitions. [2022-10-17 10:09:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:09:36,373 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:36,373 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] [2022-10-17 10:09:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:09:36,374 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:36,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1504717030, now seen corresponding path program 1 times [2022-10-17 10:09:36,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:36,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950802652] [2022-10-17 10:09:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:36,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:36,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950802652] [2022-10-17 10:09:36,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950802652] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:36,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:36,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:09:36,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796924759] [2022-10-17 10:09:36,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:09:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:09:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:09:36,471 INFO L87 Difference]: Start difference. First operand 4909 states and 6943 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:37,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:37,799 INFO L93 Difference]: Finished difference Result 12665 states and 18260 transitions. [2022-10-17 10:09:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:09:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-10-17 10:09:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:37,816 INFO L225 Difference]: With dead ends: 12665 [2022-10-17 10:09:37,816 INFO L226 Difference]: Without dead ends: 9116 [2022-10-17 10:09:37,822 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 [2022-10-17 10:09:37,823 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 241 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:37,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 878 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:09:37,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9116 states. [2022-10-17 10:09:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9116 to 9114. [2022-10-17 10:09:39,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9114 states, 9113 states have (on average 1.407330187644025) internal successors, (12825), 9113 states have internal predecessors, (12825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9114 states to 9114 states and 12825 transitions. [2022-10-17 10:09:39,334 INFO L78 Accepts]: Start accepts. Automaton has 9114 states and 12825 transitions. Word has length 104 [2022-10-17 10:09:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:39,334 INFO L495 AbstractCegarLoop]: Abstraction has 9114 states and 12825 transitions. [2022-10-17 10:09:39,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 9114 states and 12825 transitions. [2022-10-17 10:09:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:09:39,346 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:39,346 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] [2022-10-17 10:09:39,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 10:09:39,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1354887869, now seen corresponding path program 1 times [2022-10-17 10:09:39,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:39,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665795452] [2022-10-17 10:09:39,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:39,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:39,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:39,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665795452] [2022-10-17 10:09:39,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665795452] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:39,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:39,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:39,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622611335] [2022-10-17 10:09:39,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:39,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:09:39,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:39,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:09:39,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:09:39,508 INFO L87 Difference]: Start difference. First operand 9114 states and 12825 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:41,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:09:41,434 INFO L93 Difference]: Finished difference Result 16900 states and 24181 transitions. [2022-10-17 10:09:41,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:09:41,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-10-17 10:09:41,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:09:41,453 INFO L225 Difference]: With dead ends: 16900 [2022-10-17 10:09:41,453 INFO L226 Difference]: Without dead ends: 9114 [2022-10-17 10:09:41,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:09:41,464 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 771 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:09:41,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 330 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:09:41,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9114 states. [2022-10-17 10:09:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9114 to 9114. [2022-10-17 10:09:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9114 states, 9113 states have (on average 1.3913091188412159) internal successors, (12679), 9113 states have internal predecessors, (12679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9114 states to 9114 states and 12679 transitions. [2022-10-17 10:09:43,163 INFO L78 Accepts]: Start accepts. Automaton has 9114 states and 12679 transitions. Word has length 104 [2022-10-17 10:09:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:09:43,164 INFO L495 AbstractCegarLoop]: Abstraction has 9114 states and 12679 transitions. [2022-10-17 10:09:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:09:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 9114 states and 12679 transitions. [2022-10-17 10:09:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-17 10:09:43,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:09:43,178 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] [2022-10-17 10:09:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 10:09:43,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:09:43,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:09:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2078893224, now seen corresponding path program 1 times [2022-10-17 10:09:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:09:43,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321707317] [2022-10-17 10:09:43,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:09:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:09:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:09:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:09:43,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:09:43,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321707317] [2022-10-17 10:09:43,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321707317] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:09:43,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:09:43,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:09:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693297242] [2022-10-17 10:09:43,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:09:43,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:09:43,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:09:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:09:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:09:43,500 INFO L87 Difference]: Start difference. First operand 9114 states and 12679 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)