./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa --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 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:34:07,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:34:07,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:34:08,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:34:08,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:34:08,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:34:08,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:34:08,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:34:08,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:34:08,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:34:08,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:34:08,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:34:08,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:34:08,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:34:08,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:34:08,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:34:08,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:34:08,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:34:08,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:34:08,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:34:08,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:34:08,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:34:08,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:34:08,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:34:08,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:34:08,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:34:08,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:34:08,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:34:08,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:34:08,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:34:08,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:34:08,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:34:08,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:34:08,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:34:08,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:34:08,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:34:08,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:34:08,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:34:08,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:34:08,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:34:08,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:34:08,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:34:08,063 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:34:08,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:34:08,063 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:34:08,063 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:34:08,064 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:34:08,064 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:34:08,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:34:08,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:34:08,065 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:34:08,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:34:08,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:34:08,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:34:08,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:34:08,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:34:08,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:34:08,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:34:08,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:34:08,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:34:08,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:34:08,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:34:08,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:34:08,068 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:34:08,068 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_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4086756fe326e2f90904c763827ae3d38d44a78a9eb1422e3198b9e38a459658 [2021-12-07 01:34:08,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:34:08,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:34:08,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:34:08,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:34:08,265 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:34:08,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-07 01:34:08,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/data/2e49a1763/36d5940e8dcf408896765b6ea7e175de/FLAGe49a20c71 [2021-12-07 01:34:08,712 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:34:08,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-07 01:34:08,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/data/2e49a1763/36d5940e8dcf408896765b6ea7e175de/FLAGe49a20c71 [2021-12-07 01:34:09,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/data/2e49a1763/36d5940e8dcf408896765b6ea7e175de [2021-12-07 01:34:09,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:34:09,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:34:09,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:34:09,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:34:09,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:34:09,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@246ae680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09, skipping insertion in model container [2021-12-07 01:34:09,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:34:09,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:34:09,277 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_3f840338-f6b6-46eb-9733-d286c2f0f03e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2021-12-07 01:34:09,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:34:09,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:34:09,356 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_3f840338-f6b6-46eb-9733-d286c2f0f03e/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2021-12-07 01:34:09,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:34:09,382 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:34:09,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09 WrapperNode [2021-12-07 01:34:09,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:34:09,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:34:09,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:34:09,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:34:09,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,422 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 635 [2021-12-07 01:34:09,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:34:09,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:34:09,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:34:09,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:34:09,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:34:09,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:34:09,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:34:09,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:34:09,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (1/1) ... [2021-12-07 01:34:09,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:34:09,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:34:09,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:34:09,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f840338-f6b6-46eb-9733-d286c2f0f03e/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:34:09,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:34:09,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:34:09,580 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:34:09,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:34:09,922 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:34:09,929 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:34:09,929 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 01:34:09,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:34:09 BoogieIcfgContainer [2021-12-07 01:34:09,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:34:09,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:34:09,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:34:09,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:34:09,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:34:09" (1/3) ... [2021-12-07 01:34:09,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732eaa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:34:09, skipping insertion in model container [2021-12-07 01:34:09,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:34:09" (2/3) ... [2021-12-07 01:34:09,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732eaa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:34:09, skipping insertion in model container [2021-12-07 01:34:09,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:34:09" (3/3) ... [2021-12-07 01:34:09,936 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2021-12-07 01:34:09,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:34:09,940 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:34:09,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:34:09,983 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:34:09,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:34:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-07 01:34:10,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:10,005 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:10,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:10,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:10,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1975649421, now seen corresponding path program 1 times [2021-12-07 01:34:10,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:10,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048310835] [2021-12-07 01:34:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:10,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:10,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:10,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048310835] [2021-12-07 01:34:10,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048310835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:10,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:10,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:10,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379702243] [2021-12-07 01:34:10,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:10,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:10,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:10,333 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 154 states have internal predecessors, (267), 0 states have call successors, (0), 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 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:10,412 INFO L93 Difference]: Finished difference Result 341 states and 571 transitions. [2021-12-07 01:34:10,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-12-07 01:34:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:10,427 INFO L225 Difference]: With dead ends: 341 [2021-12-07 01:34:10,427 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 01:34:10,431 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:10,434 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 157 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:10,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 460 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 01:34:10,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 234. [2021-12-07 01:34:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5665236051502145) internal successors, (365), 233 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 365 transitions. [2021-12-07 01:34:10,493 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 365 transitions. Word has length 62 [2021-12-07 01:34:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:10,493 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 365 transitions. [2021-12-07 01:34:10,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 365 transitions. [2021-12-07 01:34:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-07 01:34:10,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:10,498 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:34:10,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1826541876, now seen corresponding path program 1 times [2021-12-07 01:34:10,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:10,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338721546] [2021-12-07 01:34:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:10,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:10,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338721546] [2021-12-07 01:34:10,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338721546] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:10,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:10,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:10,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595826589] [2021-12-07 01:34:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:10,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:10,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:10,606 INFO L87 Difference]: Start difference. First operand 234 states and 365 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:10,650 INFO L93 Difference]: Finished difference Result 572 states and 917 transitions. [2021-12-07 01:34:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:10,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-07 01:34:10,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:10,660 INFO L225 Difference]: With dead ends: 572 [2021-12-07 01:34:10,660 INFO L226 Difference]: Without dead ends: 395 [2021-12-07 01:34:10,661 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:10,662 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:10,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 430 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:10,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-07 01:34:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2021-12-07 01:34:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.5897435897435896) internal successors, (620), 390 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 620 transitions. [2021-12-07 01:34:10,691 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 620 transitions. Word has length 64 [2021-12-07 01:34:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:10,692 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 620 transitions. [2021-12-07 01:34:10,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 620 transitions. [2021-12-07 01:34:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-07 01:34:10,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:10,695 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:10,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:34:10,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1385775307, now seen corresponding path program 1 times [2021-12-07 01:34:10,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:10,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010762865] [2021-12-07 01:34:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:10,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:10,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010762865] [2021-12-07 01:34:10,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010762865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:10,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:10,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:10,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872898039] [2021-12-07 01:34:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:10,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:10,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:10,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:10,758 INFO L87 Difference]: Start difference. First operand 391 states and 620 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:10,799 INFO L93 Difference]: Finished difference Result 1027 states and 1654 transitions. [2021-12-07 01:34:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-12-07 01:34:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:10,804 INFO L225 Difference]: With dead ends: 1027 [2021-12-07 01:34:10,804 INFO L226 Difference]: Without dead ends: 693 [2021-12-07 01:34:10,806 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:10,807 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:10,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 431 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-12-07 01:34:10,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 687. [2021-12-07 01:34:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 686 states have (on average 1.597667638483965) internal successors, (1096), 686 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1096 transitions. [2021-12-07 01:34:10,837 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1096 transitions. Word has length 66 [2021-12-07 01:34:10,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:10,837 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 1096 transitions. [2021-12-07 01:34:10,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1096 transitions. [2021-12-07 01:34:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-07 01:34:10,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:10,839 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:10,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:34:10,840 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:10,840 INFO L85 PathProgramCache]: Analyzing trace with hash -190660810, now seen corresponding path program 1 times [2021-12-07 01:34:10,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:10,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962565002] [2021-12-07 01:34:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:10,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:10,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:10,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962565002] [2021-12-07 01:34:10,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962565002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:10,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:10,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:10,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670404206] [2021-12-07 01:34:10,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:10,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:10,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:10,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:10,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:10,901 INFO L87 Difference]: Start difference. First operand 687 states and 1096 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:11,070 INFO L93 Difference]: Finished difference Result 2979 states and 4854 transitions. [2021-12-07 01:34:11,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:34:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-07 01:34:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:11,082 INFO L225 Difference]: With dead ends: 2979 [2021-12-07 01:34:11,082 INFO L226 Difference]: Without dead ends: 2349 [2021-12-07 01:34:11,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 01:34:11,084 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1026 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:11,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1596 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:34:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2021-12-07 01:34:11,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 1239. [2021-12-07 01:34:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1238 states have (on average 1.6082390953150243) internal successors, (1991), 1238 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1991 transitions. [2021-12-07 01:34:11,145 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1991 transitions. Word has length 68 [2021-12-07 01:34:11,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:11,145 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1991 transitions. [2021-12-07 01:34:11,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1991 transitions. [2021-12-07 01:34:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-07 01:34:11,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:11,147 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:11,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:34:11,147 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:11,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:11,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1678021987, now seen corresponding path program 1 times [2021-12-07 01:34:11,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:11,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430693865] [2021-12-07 01:34:11,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:11,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:11,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:11,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430693865] [2021-12-07 01:34:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430693865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:11,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134727690] [2021-12-07 01:34:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:11,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:11,192 INFO L87 Difference]: Start difference. First operand 1239 states and 1991 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:11,354 INFO L93 Difference]: Finished difference Result 3619 states and 5887 transitions. [2021-12-07 01:34:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:11,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-07 01:34:11,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:11,369 INFO L225 Difference]: With dead ends: 3619 [2021-12-07 01:34:11,370 INFO L226 Difference]: Without dead ends: 2437 [2021-12-07 01:34:11,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:11,373 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 456 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:11,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 787 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:11,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-07 01:34:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 1829. [2021-12-07 01:34:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.6148796498905909) internal successors, (2952), 1828 states have internal predecessors, (2952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2952 transitions. [2021-12-07 01:34:11,456 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2952 transitions. Word has length 69 [2021-12-07 01:34:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:11,456 INFO L470 AbstractCegarLoop]: Abstraction has 1829 states and 2952 transitions. [2021-12-07 01:34:11,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2952 transitions. [2021-12-07 01:34:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-07 01:34:11,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:11,459 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:11,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 01:34:11,459 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash -537020195, now seen corresponding path program 1 times [2021-12-07 01:34:11,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:11,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539215057] [2021-12-07 01:34:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:11,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:11,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:11,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539215057] [2021-12-07 01:34:11,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539215057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:11,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:11,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:11,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363645208] [2021-12-07 01:34:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:11,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:11,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:11,518 INFO L87 Difference]: Start difference. First operand 1829 states and 2952 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:11,720 INFO L93 Difference]: Finished difference Result 5313 states and 8631 transitions. [2021-12-07 01:34:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-07 01:34:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:11,742 INFO L225 Difference]: With dead ends: 5313 [2021-12-07 01:34:11,742 INFO L226 Difference]: Without dead ends: 3541 [2021-12-07 01:34:11,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:11,747 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 456 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:11,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 729 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2021-12-07 01:34:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2673. [2021-12-07 01:34:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 1.6137724550898203) internal successors, (4312), 2672 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 4312 transitions. [2021-12-07 01:34:11,919 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 4312 transitions. Word has length 70 [2021-12-07 01:34:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:11,919 INFO L470 AbstractCegarLoop]: Abstraction has 2673 states and 4312 transitions. [2021-12-07 01:34:11,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:11,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 4312 transitions. [2021-12-07 01:34:11,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-07 01:34:11,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:11,921 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:11,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 01:34:11,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:11,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 478855012, now seen corresponding path program 1 times [2021-12-07 01:34:11,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:11,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12785051] [2021-12-07 01:34:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:11,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:11,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:11,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12785051] [2021-12-07 01:34:11,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12785051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:11,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:11,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:11,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502493519] [2021-12-07 01:34:11,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:11,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:11,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:11,971 INFO L87 Difference]: Start difference. First operand 2673 states and 4312 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:12,196 INFO L93 Difference]: Finished difference Result 7713 states and 12507 transitions. [2021-12-07 01:34:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:12,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-07 01:34:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:12,219 INFO L225 Difference]: With dead ends: 7713 [2021-12-07 01:34:12,219 INFO L226 Difference]: Without dead ends: 5097 [2021-12-07 01:34:12,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:12,224 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 454 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:12,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 772 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2021-12-07 01:34:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 3869. [2021-12-07 01:34:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3869 states, 3868 states have (on average 1.6116856256463288) internal successors, (6234), 3868 states have internal predecessors, (6234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3869 states to 3869 states and 6234 transitions. [2021-12-07 01:34:12,383 INFO L78 Accepts]: Start accepts. Automaton has 3869 states and 6234 transitions. Word has length 71 [2021-12-07 01:34:12,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:12,384 INFO L470 AbstractCegarLoop]: Abstraction has 3869 states and 6234 transitions. [2021-12-07 01:34:12,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3869 states and 6234 transitions. [2021-12-07 01:34:12,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-07 01:34:12,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:12,385 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:12,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 01:34:12,386 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1637619353, now seen corresponding path program 1 times [2021-12-07 01:34:12,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:12,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156334533] [2021-12-07 01:34:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:12,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156334533] [2021-12-07 01:34:12,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156334533] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:12,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:12,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:12,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054078974] [2021-12-07 01:34:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:12,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:12,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:12,416 INFO L87 Difference]: Start difference. First operand 3869 states and 6234 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:12,647 INFO L93 Difference]: Finished difference Result 8646 states and 14040 transitions. [2021-12-07 01:34:12,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:12,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-07 01:34:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:12,674 INFO L225 Difference]: With dead ends: 8646 [2021-12-07 01:34:12,674 INFO L226 Difference]: Without dead ends: 5881 [2021-12-07 01:34:12,678 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:12,679 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 138 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:12,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 536 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2021-12-07 01:34:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5879. [2021-12-07 01:34:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5879 states, 5878 states have (on average 1.6124532153793807) internal successors, (9478), 5878 states have internal predecessors, (9478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 9478 transitions. [2021-12-07 01:34:12,906 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 9478 transitions. Word has length 72 [2021-12-07 01:34:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:12,907 INFO L470 AbstractCegarLoop]: Abstraction has 5879 states and 9478 transitions. [2021-12-07 01:34:12,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 9478 transitions. [2021-12-07 01:34:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-07 01:34:12,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:12,908 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:12,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 01:34:12,908 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1419254461, now seen corresponding path program 1 times [2021-12-07 01:34:12,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:12,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171273887] [2021-12-07 01:34:12,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:12,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:12,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:12,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:12,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171273887] [2021-12-07 01:34:12,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171273887] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:12,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:12,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:12,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068018712] [2021-12-07 01:34:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:12,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:12,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:12,940 INFO L87 Difference]: Start difference. First operand 5879 states and 9478 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:13,224 INFO L93 Difference]: Finished difference Result 12993 states and 20995 transitions. [2021-12-07 01:34:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-07 01:34:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:13,254 INFO L225 Difference]: With dead ends: 12993 [2021-12-07 01:34:13,254 INFO L226 Difference]: Without dead ends: 8823 [2021-12-07 01:34:13,260 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:13,261 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 126 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:13,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 481 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:13,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8823 states. [2021-12-07 01:34:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8823 to 8821. [2021-12-07 01:34:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 8820 states have (on average 1.6052154195011339) internal successors, (14158), 8820 states have internal predecessors, (14158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:13,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 14158 transitions. [2021-12-07 01:34:13,623 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 14158 transitions. Word has length 72 [2021-12-07 01:34:13,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:13,623 INFO L470 AbstractCegarLoop]: Abstraction has 8821 states and 14158 transitions. [2021-12-07 01:34:13,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:13,623 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 14158 transitions. [2021-12-07 01:34:13,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-07 01:34:13,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:13,624 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:13,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 01:34:13,624 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 569279253, now seen corresponding path program 1 times [2021-12-07 01:34:13,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141624100] [2021-12-07 01:34:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:13,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:13,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:13,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141624100] [2021-12-07 01:34:13,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141624100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:13,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:13,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:13,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47140248] [2021-12-07 01:34:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:13,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:13,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:13,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:13,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:13,656 INFO L87 Difference]: Start difference. First operand 8821 states and 14158 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:14,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:14,007 INFO L93 Difference]: Finished difference Result 19170 states and 30844 transitions. [2021-12-07 01:34:14,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-12-07 01:34:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:14,042 INFO L225 Difference]: With dead ends: 19170 [2021-12-07 01:34:14,042 INFO L226 Difference]: Without dead ends: 12906 [2021-12-07 01:34:14,049 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:14,050 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 132 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:14,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 521 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:14,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2021-12-07 01:34:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2021-12-07 01:34:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5969154460203054) internal successors, (20605), 12903 states have internal predecessors, (20605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20605 transitions. [2021-12-07 01:34:14,529 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20605 transitions. Word has length 72 [2021-12-07 01:34:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:14,529 INFO L470 AbstractCegarLoop]: Abstraction has 12904 states and 20605 transitions. [2021-12-07 01:34:14,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20605 transitions. [2021-12-07 01:34:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-07 01:34:14,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:14,530 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:14,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 01:34:14,530 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash -899144939, now seen corresponding path program 1 times [2021-12-07 01:34:14,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:14,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917736945] [2021-12-07 01:34:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:14,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:14,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917736945] [2021-12-07 01:34:14,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917736945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:14,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:14,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:14,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984682629] [2021-12-07 01:34:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:14,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:14,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:14,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:14,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:14,623 INFO L87 Difference]: Start difference. First operand 12904 states and 20605 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:15,167 INFO L93 Difference]: Finished difference Result 25719 states and 41086 transitions. [2021-12-07 01:34:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-07 01:34:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:15,187 INFO L225 Difference]: With dead ends: 25719 [2021-12-07 01:34:15,187 INFO L226 Difference]: Without dead ends: 12906 [2021-12-07 01:34:15,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:34:15,197 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 455 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:15,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 635 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12906 states. [2021-12-07 01:34:15,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12906 to 12904. [2021-12-07 01:34:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12904 states, 12903 states have (on average 1.5872277764860885) internal successors, (20480), 12903 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12904 states to 12904 states and 20480 transitions. [2021-12-07 01:34:15,614 INFO L78 Accepts]: Start accepts. Automaton has 12904 states and 20480 transitions. Word has length 73 [2021-12-07 01:34:15,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:15,615 INFO L470 AbstractCegarLoop]: Abstraction has 12904 states and 20480 transitions. [2021-12-07 01:34:15,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:15,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12904 states and 20480 transitions. [2021-12-07 01:34:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 01:34:15,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:15,615 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:15,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 01:34:15,616 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash -764385937, now seen corresponding path program 1 times [2021-12-07 01:34:15,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513887974] [2021-12-07 01:34:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:15,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:15,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:15,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513887974] [2021-12-07 01:34:15,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513887974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:15,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:15,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:15,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536496241] [2021-12-07 01:34:15,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:15,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:15,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:15,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:15,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:15,690 INFO L87 Difference]: Start difference. First operand 12904 states and 20480 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:16,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:16,611 INFO L93 Difference]: Finished difference Result 36939 states and 58780 transitions. [2021-12-07 01:34:16,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:16,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-07 01:34:16,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:16,645 INFO L225 Difference]: With dead ends: 36939 [2021-12-07 01:34:16,646 INFO L226 Difference]: Without dead ends: 24126 [2021-12-07 01:34:16,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:34:16,662 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 323 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:16,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 641 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:16,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24126 states. [2021-12-07 01:34:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24126 to 24124. [2021-12-07 01:34:17,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24124 states, 24123 states have (on average 1.576711022675455) internal successors, (38035), 24123 states have internal predecessors, (38035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24124 states to 24124 states and 38035 transitions. [2021-12-07 01:34:17,542 INFO L78 Accepts]: Start accepts. Automaton has 24124 states and 38035 transitions. Word has length 76 [2021-12-07 01:34:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:17,542 INFO L470 AbstractCegarLoop]: Abstraction has 24124 states and 38035 transitions. [2021-12-07 01:34:17,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 24124 states and 38035 transitions. [2021-12-07 01:34:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-07 01:34:17,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:17,543 INFO L514 BasicCegarLoop]: 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] [2021-12-07 01:34:17,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 01:34:17,543 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2071930450, now seen corresponding path program 1 times [2021-12-07 01:34:17,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:17,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414636407] [2021-12-07 01:34:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:17,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:17,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:17,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:17,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414636407] [2021-12-07 01:34:17,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414636407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:17,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:17,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:17,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583405988] [2021-12-07 01:34:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:17,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:17,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:17,609 INFO L87 Difference]: Start difference. First operand 24124 states and 38035 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:19,119 INFO L93 Difference]: Finished difference Result 46051 states and 72316 transitions. [2021-12-07 01:34:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:34:19,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-07 01:34:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:19,176 INFO L225 Difference]: With dead ends: 46051 [2021-12-07 01:34:19,177 INFO L226 Difference]: Without dead ends: 46049 [2021-12-07 01:34:19,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:34:19,186 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 286 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:19,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1094 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46049 states. [2021-12-07 01:34:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46049 to 24848. [2021-12-07 01:34:20,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24848 states, 24847 states have (on average 1.5595444118002173) internal successors, (38750), 24847 states have internal predecessors, (38750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24848 states to 24848 states and 38750 transitions. [2021-12-07 01:34:20,631 INFO L78 Accepts]: Start accepts. Automaton has 24848 states and 38750 transitions. Word has length 77 [2021-12-07 01:34:20,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:20,631 INFO L470 AbstractCegarLoop]: Abstraction has 24848 states and 38750 transitions. [2021-12-07 01:34:20,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 24848 states and 38750 transitions. [2021-12-07 01:34:20,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:34:20,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:20,633 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:20,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 01:34:20,633 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:20,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash 555059603, now seen corresponding path program 1 times [2021-12-07 01:34:20,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:20,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511736933] [2021-12-07 01:34:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:20,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:20,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511736933] [2021-12-07 01:34:20,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511736933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:20,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:20,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:20,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813750914] [2021-12-07 01:34:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:20,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:20,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:20,683 INFO L87 Difference]: Start difference. First operand 24848 states and 38750 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:22,614 INFO L93 Difference]: Finished difference Result 60736 states and 95072 transitions. [2021-12-07 01:34:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:22,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2021-12-07 01:34:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:22,679 INFO L225 Difference]: With dead ends: 60736 [2021-12-07 01:34:22,679 INFO L226 Difference]: Without dead ends: 48774 [2021-12-07 01:34:22,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:22,699 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 576 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:22,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 1049 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48774 states. [2021-12-07 01:34:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48774 to 38128. [2021-12-07 01:34:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38128 states, 38127 states have (on average 1.5578986020405488) internal successors, (59398), 38127 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38128 states to 38128 states and 59398 transitions. [2021-12-07 01:34:24,445 INFO L78 Accepts]: Start accepts. Automaton has 38128 states and 59398 transitions. Word has length 103 [2021-12-07 01:34:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:24,445 INFO L470 AbstractCegarLoop]: Abstraction has 38128 states and 59398 transitions. [2021-12-07 01:34:24,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 38128 states and 59398 transitions. [2021-12-07 01:34:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:34:24,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:24,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:24,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 01:34:24,447 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:24,448 INFO L85 PathProgramCache]: Analyzing trace with hash 773424495, now seen corresponding path program 1 times [2021-12-07 01:34:24,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:24,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400544322] [2021-12-07 01:34:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:24,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-07 01:34:24,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:24,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400544322] [2021-12-07 01:34:24,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400544322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:24,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:24,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:24,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080188267] [2021-12-07 01:34:24,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:24,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:24,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:24,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:24,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:24,494 INFO L87 Difference]: Start difference. First operand 38128 states and 59398 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:27,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:27,166 INFO L93 Difference]: Finished difference Result 68122 states and 106644 transitions. [2021-12-07 01:34:27,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:27,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 103 [2021-12-07 01:34:27,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:27,248 INFO L225 Difference]: With dead ends: 68122 [2021-12-07 01:34:27,248 INFO L226 Difference]: Without dead ends: 56390 [2021-12-07 01:34:27,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:27,272 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 587 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:27,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1046 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56390 states. [2021-12-07 01:34:29,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56390 to 51632. [2021-12-07 01:34:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51632 states, 51631 states have (on average 1.559605663264318) internal successors, (80524), 51631 states have internal predecessors, (80524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51632 states to 51632 states and 80524 transitions. [2021-12-07 01:34:29,740 INFO L78 Accepts]: Start accepts. Automaton has 51632 states and 80524 transitions. Word has length 103 [2021-12-07 01:34:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:29,740 INFO L470 AbstractCegarLoop]: Abstraction has 51632 states and 80524 transitions. [2021-12-07 01:34:29,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 51632 states and 80524 transitions. [2021-12-07 01:34:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 01:34:29,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:29,742 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:29,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 01:34:29,742 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:29,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1533009087, now seen corresponding path program 1 times [2021-12-07 01:34:29,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:29,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864378296] [2021-12-07 01:34:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:29,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:34:29,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864378296] [2021-12-07 01:34:29,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864378296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:29,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:29,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:34:29,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474079011] [2021-12-07 01:34:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:29,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:34:29,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:34:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:34:29,788 INFO L87 Difference]: Start difference. First operand 51632 states and 80524 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) [2021-12-07 01:34:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:32,319 INFO L93 Difference]: Finished difference Result 72782 states and 113944 transitions. [2021-12-07 01:34:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:34:32,320 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 103 [2021-12-07 01:34:32,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:32,405 INFO L225 Difference]: With dead ends: 72782 [2021-12-07 01:34:32,405 INFO L226 Difference]: Without dead ends: 61050 [2021-12-07 01:34:32,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:34:32,424 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 582 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:32,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 1150 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61050 states. [2021-12-07 01:34:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61050 to 59156. [2021-12-07 01:34:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59156 states, 59155 states have (on average 1.5613219508072014) internal successors, (92360), 59155 states have internal predecessors, (92360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59156 states to 59156 states and 92360 transitions. [2021-12-07 01:34:35,564 INFO L78 Accepts]: Start accepts. Automaton has 59156 states and 92360 transitions. Word has length 103 [2021-12-07 01:34:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:35,564 INFO L470 AbstractCegarLoop]: Abstraction has 59156 states and 92360 transitions. [2021-12-07 01:34:35,564 INFO L471 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) [2021-12-07 01:34:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 59156 states and 92360 transitions. [2021-12-07 01:34:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 01:34:35,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:35,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:35,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 01:34:35,568 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:35,568 INFO L85 PathProgramCache]: Analyzing trace with hash -35525664, now seen corresponding path program 1 times [2021-12-07 01:34:35,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:35,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622103794] [2021-12-07 01:34:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:35,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:35,616 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:35,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:35,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622103794] [2021-12-07 01:34:35,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622103794] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:35,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:35,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:34:35,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469867518] [2021-12-07 01:34:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:35,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:34:35,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:34:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:35,618 INFO L87 Difference]: Start difference. First operand 59156 states and 92360 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:38,780 INFO L93 Difference]: Finished difference Result 96279 states and 151019 transitions. [2021-12-07 01:34:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:34:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2021-12-07 01:34:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:38,893 INFO L225 Difference]: With dead ends: 96279 [2021-12-07 01:34:38,894 INFO L226 Difference]: Without dead ends: 76701 [2021-12-07 01:34:38,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:34:38,926 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 267 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:38,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 737 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76701 states. [2021-12-07 01:34:42,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76701 to 74809. [2021-12-07 01:34:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74809 states, 74808 states have (on average 1.5616511603037109) internal successors, (116824), 74808 states have internal predecessors, (116824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:42,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74809 states to 74809 states and 116824 transitions. [2021-12-07 01:34:42,545 INFO L78 Accepts]: Start accepts. Automaton has 74809 states and 116824 transitions. Word has length 104 [2021-12-07 01:34:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:42,546 INFO L470 AbstractCegarLoop]: Abstraction has 74809 states and 116824 transitions. [2021-12-07 01:34:42,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:42,546 INFO L276 IsEmpty]: Start isEmpty. Operand 74809 states and 116824 transitions. [2021-12-07 01:34:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 01:34:42,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:42,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:42,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 01:34:42,548 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1812785472, now seen corresponding path program 1 times [2021-12-07 01:34:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:42,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15320671] [2021-12-07 01:34:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:42,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 01:34:42,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:42,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15320671] [2021-12-07 01:34:42,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15320671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:42,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:42,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:42,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128309251] [2021-12-07 01:34:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:42,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:42,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:42,583 INFO L87 Difference]: Start difference. First operand 74809 states and 116824 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:34:48,213 INFO L93 Difference]: Finished difference Result 161251 states and 252607 transitions. [2021-12-07 01:34:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:34:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 [2021-12-07 01:34:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:34:48,430 INFO L225 Difference]: With dead ends: 161251 [2021-12-07 01:34:48,431 INFO L226 Difference]: Without dead ends: 126189 [2021-12-07 01:34:48,466 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:34:48,466 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 117 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:34:48,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 428 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:34:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126189 states. [2021-12-07 01:34:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126189 to 125911. [2021-12-07 01:34:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125911 states, 125910 states have (on average 1.5617822253990945) internal successors, (196644), 125910 states have internal predecessors, (196644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125911 states to 125911 states and 196644 transitions. [2021-12-07 01:34:54,634 INFO L78 Accepts]: Start accepts. Automaton has 125911 states and 196644 transitions. Word has length 104 [2021-12-07 01:34:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:34:54,634 INFO L470 AbstractCegarLoop]: Abstraction has 125911 states and 196644 transitions. [2021-12-07 01:34:54,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:34:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 125911 states and 196644 transitions. [2021-12-07 01:34:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 01:34:54,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:34:54,637 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:34:54,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 01:34:54,637 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:34:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:34:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1057251553, now seen corresponding path program 1 times [2021-12-07 01:34:54,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:34:54,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784758428] [2021-12-07 01:34:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:34:54,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:34:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:34:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:34:54,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:34:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784758428] [2021-12-07 01:34:54,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784758428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:34:54,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:34:54,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:34:54,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750290331] [2021-12-07 01:34:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:34:54,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:34:54,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:34:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:34:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:34:54,668 INFO L87 Difference]: Start difference. First operand 125911 states and 196644 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:06,120 INFO L93 Difference]: Finished difference Result 370557 states and 578073 transitions. [2021-12-07 01:35:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-07 01:35:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:06,559 INFO L225 Difference]: With dead ends: 370557 [2021-12-07 01:35:06,559 INFO L226 Difference]: Without dead ends: 244737 [2021-12-07 01:35:06,641 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:35:06,641 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 178 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:06,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 561 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:35:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244737 states. [2021-12-07 01:35:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244737 to 244735. [2021-12-07 01:35:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244735 states, 244734 states have (on average 1.5500298283033824) internal successors, (379345), 244734 states have internal predecessors, (379345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244735 states to 244735 states and 379345 transitions. [2021-12-07 01:35:19,146 INFO L78 Accepts]: Start accepts. Automaton has 244735 states and 379345 transitions. Word has length 105 [2021-12-07 01:35:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:35:19,146 INFO L470 AbstractCegarLoop]: Abstraction has 244735 states and 379345 transitions. [2021-12-07 01:35:19,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 244735 states and 379345 transitions. [2021-12-07 01:35:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 01:35:19,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:35:19,149 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:35:19,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 01:35:19,149 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:35:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:35:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 735650069, now seen corresponding path program 1 times [2021-12-07 01:35:19,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:35:19,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735335516] [2021-12-07 01:35:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:35:19,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:35:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:35:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:35:19,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:35:19,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735335516] [2021-12-07 01:35:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735335516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:35:19,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:35:19,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:35:19,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483456438] [2021-12-07 01:35:19,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:35:19,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:35:19,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:35:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:35:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:35:19,193 INFO L87 Difference]: Start difference. First operand 244735 states and 379345 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:35:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:35:42,634 INFO L93 Difference]: Finished difference Result 719881 states and 1114359 transitions. [2021-12-07 01:35:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:35:42,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-12-07 01:35:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:35:43,573 INFO L225 Difference]: With dead ends: 719881 [2021-12-07 01:35:43,574 INFO L226 Difference]: Without dead ends: 475287 [2021-12-07 01:35:43,771 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:35:43,772 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 159 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:35:43,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 524 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:35:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475287 states. [2021-12-07 01:36:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475287 to 475285. [2021-12-07 01:36:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475285 states, 475284 states have (on average 1.5375670125651189) internal successors, (730781), 475284 states have internal predecessors, (730781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475285 states to 475285 states and 730781 transitions. [2021-12-07 01:36:10,495 INFO L78 Accepts]: Start accepts. Automaton has 475285 states and 730781 transitions. Word has length 105 [2021-12-07 01:36:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:36:10,495 INFO L470 AbstractCegarLoop]: Abstraction has 475285 states and 730781 transitions. [2021-12-07 01:36:10,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:36:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 475285 states and 730781 transitions. [2021-12-07 01:36:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 01:36:10,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:36:10,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:36:10,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 01:36:10,501 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:36:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:36:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1039451489, now seen corresponding path program 1 times [2021-12-07 01:36:10,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:36:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926939688] [2021-12-07 01:36:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:36:10,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:36:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:36:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:36:10,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:36:10,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926939688] [2021-12-07 01:36:10,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926939688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:36:10,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:36:10,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:36:10,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14076969] [2021-12-07 01:36:10,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:36:10,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:36:10,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:36:10,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:36:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:36:10,539 INFO L87 Difference]: Start difference. First operand 475285 states and 730781 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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) [2021-12-07 01:36:49,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:36:49,447 INFO L93 Difference]: Finished difference Result 1017079 states and 1568137 transitions. [2021-12-07 01:36:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:36:49,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 105 [2021-12-07 01:36:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:36:51,419 INFO L225 Difference]: With dead ends: 1017079 [2021-12-07 01:36:51,419 INFO L226 Difference]: Without dead ends: 751601 [2021-12-07 01:36:51,767 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:36:51,768 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 117 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:36:51,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 423 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:36:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751601 states. [2021-12-07 01:37:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751601 to 749995. [2021-12-07 01:37:33,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749995 states, 749994 states have (on average 1.5376483011864095) internal successors, (1153227), 749994 states have internal predecessors, (1153227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:37:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749995 states to 749995 states and 1153227 transitions. [2021-12-07 01:37:35,677 INFO L78 Accepts]: Start accepts. Automaton has 749995 states and 1153227 transitions. Word has length 105 [2021-12-07 01:37:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:37:35,678 INFO L470 AbstractCegarLoop]: Abstraction has 749995 states and 1153227 transitions. [2021-12-07 01:37:35,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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) [2021-12-07 01:37:35,678 INFO L276 IsEmpty]: Start isEmpty. Operand 749995 states and 1153227 transitions. [2021-12-07 01:37:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 01:37:35,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:37:35,685 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:37:35,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 01:37:35,685 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:37:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:37:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2043525592, now seen corresponding path program 1 times [2021-12-07 01:37:35,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:37:35,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117714178] [2021-12-07 01:37:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:37:35,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:37:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:37:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-07 01:37:35,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:37:35,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117714178] [2021-12-07 01:37:35,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117714178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:37:35,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:37:35,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 01:37:35,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713721126] [2021-12-07 01:37:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:37:35,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:37:35,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:37:35,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:37:35,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:37:35,727 INFO L87 Difference]: Start difference. First operand 749995 states and 1153227 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) [2021-12-07 01:38:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:38:25,858 INFO L93 Difference]: Finished difference Result 1252445 states and 1931342 transitions. [2021-12-07 01:38:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:38:25,859 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 105 [2021-12-07 01:38:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:38:28,351 INFO L225 Difference]: With dead ends: 1252445 [2021-12-07 01:38:28,351 INFO L226 Difference]: Without dead ends: 978019 [2021-12-07 01:38:28,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:38:28,701 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 263 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:38:28,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 803 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:38:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978019 states. [2021-12-07 01:39:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978019 to 920547. [2021-12-07 01:39:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920547 states, 920546 states have (on average 1.535322515116029) internal successors, (1413335), 920546 states have internal predecessors, (1413335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:39:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920547 states to 920547 states and 1413335 transitions. [2021-12-07 01:39:25,207 INFO L78 Accepts]: Start accepts. Automaton has 920547 states and 1413335 transitions. Word has length 105 [2021-12-07 01:39:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:39:25,208 INFO L470 AbstractCegarLoop]: Abstraction has 920547 states and 1413335 transitions. [2021-12-07 01:39:25,208 INFO L471 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) [2021-12-07 01:39:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 920547 states and 1413335 transitions. [2021-12-07 01:39:25,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 01:39:25,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:39:25,215 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:39:25,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 01:39:25,215 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:39:25,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:39:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -445027353, now seen corresponding path program 1 times [2021-12-07 01:39:25,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:39:25,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580505874] [2021-12-07 01:39:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:39:25,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:39:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:39:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-07 01:39:25,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:39:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580505874] [2021-12-07 01:39:25,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580505874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:39:25,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:39:25,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:39:25,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640439245] [2021-12-07 01:39:25,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:39:25,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:39:25,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:39:25,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:39:25,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:39:25,250 INFO L87 Difference]: Start difference. First operand 920547 states and 1413335 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) [2021-12-07 01:40:39,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:40:39,509 INFO L93 Difference]: Finished difference Result 2279477 states and 3513679 transitions. [2021-12-07 01:40:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 01:40:39,510 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 106 [2021-12-07 01:40:39,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:40:42,760 INFO L225 Difference]: With dead ends: 2279477 [2021-12-07 01:40:42,760 INFO L226 Difference]: Without dead ends: 1359205 [2021-12-07 01:40:43,460 INFO L932 BasicCegarLoop]: 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 [2021-12-07 01:40:43,460 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 140 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:40:43,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 446 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:40:44,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359205 states. [2021-12-07 01:41:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359205 to 1305891. [2021-12-07 01:41:59,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305891 states, 1305890 states have (on average 1.5284679414039468) internal successors, (1996011), 1305890 states have internal predecessors, (1996011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:42:03,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305891 states to 1305891 states and 1996011 transitions. [2021-12-07 01:42:03,623 INFO L78 Accepts]: Start accepts. Automaton has 1305891 states and 1996011 transitions. Word has length 106 [2021-12-07 01:42:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:42:03,624 INFO L470 AbstractCegarLoop]: Abstraction has 1305891 states and 1996011 transitions. [2021-12-07 01:42:03,624 INFO L471 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) [2021-12-07 01:42:03,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1305891 states and 1996011 transitions. [2021-12-07 01:42:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 01:42:03,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:42:03,630 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:42:03,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 01:42:03,630 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:42:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:42:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1751778651, now seen corresponding path program 1 times [2021-12-07 01:42:03,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:42:03,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835919431] [2021-12-07 01:42:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:42:03,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:42:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:42:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-07 01:42:03,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:42:03,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835919431] [2021-12-07 01:42:03,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835919431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:42:03,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:42:03,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:42:03,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142469581] [2021-12-07 01:42:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:42:03,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 01:42:03,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:42:03,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 01:42:03,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 01:42:03,659 INFO L87 Difference]: Start difference. First operand 1305891 states and 1996011 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)