./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y --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 b7eede2d26a445be0bc2850b4aae5c570af9ea0b845e235e7359967bb638a4a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:36:19,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:36:19,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:36:19,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:36:19,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:36:19,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:36:19,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:36:19,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:36:19,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:36:19,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:36:19,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:36:19,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:36:19,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:36:19,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:36:19,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:36:19,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:36:19,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:36:19,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:36:19,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:36:19,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:36:19,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:36:19,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:36:19,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:36:19,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:36:19,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:36:19,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:36:19,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:36:19,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:36:19,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:36:19,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:36:19,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:36:19,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:36:19,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:36:19,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:36:19,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:36:19,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:36:19,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:36:19,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:36:19,974 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:36:19,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:36:19,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:36:19,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:36:20,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:36:20,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:36:20,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:36:20,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:36:20,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:36:20,032 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:36:20,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:36:20,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:36:20,034 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:36:20,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:36:20,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:36:20,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:36:20,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:36:20,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:36:20,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:36:20,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:36:20,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:36:20,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:36:20,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:36:20,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:36:20,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:36:20,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:36:20,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:36:20,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:36:20,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:36:20,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:36:20,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:36:20,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:36:20,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:36:20,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:36:20,043 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:36:20,043 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:36:20,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:36:20,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:36:20,044 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_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7eede2d26a445be0bc2850b4aae5c570af9ea0b845e235e7359967bb638a4a3 [2021-11-13 18:36:20,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:36:20,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:36:20,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:36:20,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:36:20,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:36:20,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2021-11-13 18:36:20,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/data/256e075c7/8e202a0f509542909dc8ac1685ee9478/FLAGec22fdea5 [2021-11-13 18:36:21,246 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:36:21,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2021-11-13 18:36:21,278 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/data/256e075c7/8e202a0f509542909dc8ac1685ee9478/FLAGec22fdea5 [2021-11-13 18:36:21,478 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/data/256e075c7/8e202a0f509542909dc8ac1685ee9478 [2021-11-13 18:36:21,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:36:21,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:36:21,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:36:21,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:36:21,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:36:21,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:21" (1/1) ... [2021-11-13 18:36:21,506 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4711c596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:21, skipping insertion in model container [2021-11-13 18:36:21,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:21" (1/1) ... [2021-11-13 18:36:21,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:36:21,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:36:22,236 WARN L228 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_2172d53f-7c6c-4578-bb2e-04ada0c1b627/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c[61125,61138] [2021-11-13 18:36:22,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:36:22,268 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:36:22,451 WARN L228 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_2172d53f-7c6c-4578-bb2e-04ada0c1b627/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c[61125,61138] [2021-11-13 18:36:22,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:36:22,482 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:36:22,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22 WrapperNode [2021-11-13 18:36:22,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:36:22,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:36:22,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:36:22,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:36:22,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:36:22,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:36:22,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:36:22,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:36:22,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:36:22,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:36:22,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:36:22,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:36:22,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (1/1) ... [2021-11-13 18:36:22,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:36:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:36:22,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:36:22,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2172d53f-7c6c-4578-bb2e-04ada0c1b627/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:36:22,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:36:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:36:22,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:36:22,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:36:25,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:36:25,394 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:36:25,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:36:25 BoogieIcfgContainer [2021-11-13 18:36:25,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:36:25,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:36:25,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:36:25,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:36:25,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:36:21" (1/3) ... [2021-11-13 18:36:25,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bb9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:36:25, skipping insertion in model container [2021-11-13 18:36:25,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:22" (2/3) ... [2021-11-13 18:36:25,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20bb9bec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:36:25, skipping insertion in model container [2021-11-13 18:36:25,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:36:25" (3/3) ... [2021-11-13 18:36:25,413 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2021-11-13 18:36:25,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:36:25,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:36:25,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:36:25,516 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 [2021-11-13 18:36:25,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:36:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-13 18:36:25,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:25,601 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:25,602 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1253378061, now seen corresponding path program 1 times [2021-11-13 18:36:25,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:25,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361069714] [2021-11-13 18:36:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:26,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:26,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361069714] [2021-11-13 18:36:26,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361069714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:26,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:26,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:36:26,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548920635] [2021-11-13 18:36:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:26,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:36:26,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:26,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:36:26,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:36:26,375 INFO L87 Difference]: Start difference. First operand has 716 states, 714 states have (on average 1.8459383753501402) internal successors, (1318), 715 states have internal predecessors, (1318), 0 states have call successors, (0), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:26,496 INFO L93 Difference]: Finished difference Result 883 states and 1607 transitions. [2021-11-13 18:36:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:36:26,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-13 18:36:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:26,536 INFO L225 Difference]: With dead ends: 883 [2021-11-13 18:36:26,536 INFO L226 Difference]: Without dead ends: 712 [2021-11-13 18:36:26,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:36:26,547 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:26,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 10.67ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:36:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-13 18:36:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2021-11-13 18:36:26,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.8438818565400843) internal successors, (1311), 711 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1311 transitions. [2021-11-13 18:36:26,686 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1311 transitions. Word has length 153 [2021-11-13 18:36:26,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:26,690 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1311 transitions. [2021-11-13 18:36:26,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:26,691 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1311 transitions. [2021-11-13 18:36:26,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-13 18:36:26,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:26,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:26,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:36:26,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash 743904971, now seen corresponding path program 1 times [2021-11-13 18:36:26,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:26,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703787993] [2021-11-13 18:36:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:26,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:27,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:27,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703787993] [2021-11-13 18:36:27,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703787993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:27,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:27,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:36:27,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406635699] [2021-11-13 18:36:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:27,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:36:27,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:36:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:36:27,087 INFO L87 Difference]: Start difference. First operand 712 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:27,333 INFO L93 Difference]: Finished difference Result 882 states and 1600 transitions. [2021-11-13 18:36:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:36:27,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-13 18:36:27,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:27,342 INFO L225 Difference]: With dead ends: 882 [2021-11-13 18:36:27,342 INFO L226 Difference]: Without dead ends: 712 [2021-11-13 18:36:27,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:27,354 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 3 mSDsluCounter, 3864 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.37ms SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:27,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 5173 Invalid, 70 Unknown, 0 Unchecked, 19.37ms Time], IncrementalHoareTripleChecker [59 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 92.77ms Time] [2021-11-13 18:36:27,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-13 18:36:27,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2021-11-13 18:36:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.759493670886076) internal successors, (1251), 711 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1251 transitions. [2021-11-13 18:36:27,394 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1251 transitions. Word has length 153 [2021-11-13 18:36:27,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:27,399 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1251 transitions. [2021-11-13 18:36:27,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1251 transitions. [2021-11-13 18:36:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-13 18:36:27,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:27,409 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:27,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:36:27,409 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:27,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash 323732946, now seen corresponding path program 1 times [2021-11-13 18:36:27,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:27,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562976583] [2021-11-13 18:36:27,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:27,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:27,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:27,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562976583] [2021-11-13 18:36:27,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562976583] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:27,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:27,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:27,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105105934] [2021-11-13 18:36:27,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:27,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:27,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:27,709 INFO L87 Difference]: Start difference. First operand 712 states and 1251 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:27,822 INFO L93 Difference]: Finished difference Result 1031 states and 1796 transitions. [2021-11-13 18:36:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:27,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2021-11-13 18:36:27,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:27,833 INFO L225 Difference]: With dead ends: 1031 [2021-11-13 18:36:27,833 INFO L226 Difference]: Without dead ends: 865 [2021-11-13 18:36:27,835 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 [2021-11-13 18:36:27,844 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 251 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.37ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:27,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2430 Invalid, 29 Unknown, 0 Unchecked, 7.37ms Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 50.69ms Time] [2021-11-13 18:36:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-11-13 18:36:27,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 862. [2021-11-13 18:36:27,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 1.745644599303136) internal successors, (1503), 861 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1503 transitions. [2021-11-13 18:36:27,887 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1503 transitions. Word has length 212 [2021-11-13 18:36:27,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:27,889 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 1503 transitions. [2021-11-13 18:36:27,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1503 transitions. [2021-11-13 18:36:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-13 18:36:27,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:27,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:27,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:36:27,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:27,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1975826350, now seen corresponding path program 1 times [2021-11-13 18:36:27,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:27,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026370492] [2021-11-13 18:36:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:27,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:28,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:28,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026370492] [2021-11-13 18:36:28,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026370492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:28,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:28,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:28,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701587260] [2021-11-13 18:36:28,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:28,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:28,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:28,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:28,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:28,141 INFO L87 Difference]: Start difference. First operand 862 states and 1503 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:28,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:28,214 INFO L93 Difference]: Finished difference Result 1472 states and 2535 transitions. [2021-11-13 18:36:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:28,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2021-11-13 18:36:28,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:28,226 INFO L225 Difference]: With dead ends: 1472 [2021-11-13 18:36:28,226 INFO L226 Difference]: Without dead ends: 1156 [2021-11-13 18:36:28,227 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 [2021-11-13 18:36:28,237 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 251 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:28,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 2442 Invalid, 13 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 23.17ms Time] [2021-11-13 18:36:28,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-11-13 18:36:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 1152. [2021-11-13 18:36:28,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.7298001737619462) internal successors, (1991), 1151 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) [2021-11-13 18:36:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1991 transitions. [2021-11-13 18:36:28,301 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1991 transitions. Word has length 216 [2021-11-13 18:36:28,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:28,302 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1991 transitions. [2021-11-13 18:36:28,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1991 transitions. [2021-11-13 18:36:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-13 18:36:28,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:28,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:28,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:36:28,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:28,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:28,314 INFO L85 PathProgramCache]: Analyzing trace with hash 194635210, now seen corresponding path program 1 times [2021-11-13 18:36:28,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:28,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404645665] [2021-11-13 18:36:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:28,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:28,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:28,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404645665] [2021-11-13 18:36:28,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404645665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:28,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:28,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:28,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173695833] [2021-11-13 18:36:28,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:28,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:28,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:28,539 INFO L87 Difference]: Start difference. First operand 1152 states and 1991 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:28,625 INFO L93 Difference]: Finished difference Result 2320 states and 3957 transitions. [2021-11-13 18:36:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2021-11-13 18:36:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:28,640 INFO L225 Difference]: With dead ends: 2320 [2021-11-13 18:36:28,640 INFO L226 Difference]: Without dead ends: 1714 [2021-11-13 18:36:28,642 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 [2021-11-13 18:36:28,643 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 243 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:28,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 2443 Invalid, 13 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 22.69ms Time] [2021-11-13 18:36:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2021-11-13 18:36:28,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1708. [2021-11-13 18:36:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1708 states, 1707 states have (on average 1.7100175746924429) internal successors, (2919), 1707 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:28,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2919 transitions. [2021-11-13 18:36:28,714 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2919 transitions. Word has length 220 [2021-11-13 18:36:28,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:28,714 INFO L470 AbstractCegarLoop]: Abstraction has 1708 states and 2919 transitions. [2021-11-13 18:36:28,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2919 transitions. [2021-11-13 18:36:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-13 18:36:28,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:28,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:28,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:36:28,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1875750874, now seen corresponding path program 1 times [2021-11-13 18:36:28,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:28,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142012747] [2021-11-13 18:36:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:28,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:28,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:28,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142012747] [2021-11-13 18:36:28,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142012747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:28,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:28,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:28,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063159883] [2021-11-13 18:36:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:28,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:28,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:28,949 INFO L87 Difference]: Start difference. First operand 1708 states and 2919 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:29,051 INFO L93 Difference]: Finished difference Result 3944 states and 6657 transitions. [2021-11-13 18:36:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2021-11-13 18:36:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:29,074 INFO L225 Difference]: With dead ends: 3944 [2021-11-13 18:36:29,074 INFO L226 Difference]: Without dead ends: 2782 [2021-11-13 18:36:29,077 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 [2021-11-13 18:36:29,078 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 235 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:29,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 2444 Invalid, 13 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 23.07ms Time] [2021-11-13 18:36:29,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-11-13 18:36:29,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2772. [2021-11-13 18:36:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2771 states have (on average 1.6885600866113317) internal successors, (4679), 2771 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 4679 transitions. [2021-11-13 18:36:29,221 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 4679 transitions. Word has length 224 [2021-11-13 18:36:29,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:29,222 INFO L470 AbstractCegarLoop]: Abstraction has 2772 states and 4679 transitions. [2021-11-13 18:36:29,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 4679 transitions. [2021-11-13 18:36:29,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-13 18:36:29,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:29,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:29,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:36:29,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash 325314, now seen corresponding path program 1 times [2021-11-13 18:36:29,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:29,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215127433] [2021-11-13 18:36:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:29,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:29,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:29,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215127433] [2021-11-13 18:36:29,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215127433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:29,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:29,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:29,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277216623] [2021-11-13 18:36:29,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:29,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:29,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:29,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:29,409 INFO L87 Difference]: Start difference. First operand 2772 states and 4679 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:29,554 INFO L93 Difference]: Finished difference Result 7048 states and 11769 transitions. [2021-11-13 18:36:29,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2021-11-13 18:36:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:29,592 INFO L225 Difference]: With dead ends: 7048 [2021-11-13 18:36:29,592 INFO L226 Difference]: Without dead ends: 4822 [2021-11-13 18:36:29,597 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 [2021-11-13 18:36:29,598 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 227 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.92ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:29,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 2445 Invalid, 13 Unknown, 0 Unchecked, 5.94ms Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 21.92ms Time] [2021-11-13 18:36:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-11-13 18:36:29,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4804. [2021-11-13 18:36:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 1.6670830730793254) internal successors, (8007), 4803 states have internal predecessors, (8007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 8007 transitions. [2021-11-13 18:36:29,855 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 8007 transitions. Word has length 228 [2021-11-13 18:36:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:29,856 INFO L470 AbstractCegarLoop]: Abstraction has 4804 states and 8007 transitions. [2021-11-13 18:36:29,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 8007 transitions. [2021-11-13 18:36:29,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-13 18:36:29,864 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:29,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:29,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:36:29,865 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:29,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1486412190, now seen corresponding path program 1 times [2021-11-13 18:36:29,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:29,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084041818] [2021-11-13 18:36:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:29,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:30,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:30,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084041818] [2021-11-13 18:36:30,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084041818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:30,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:30,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:36:30,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141390654] [2021-11-13 18:36:30,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:30,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:36:30,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:30,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:36:30,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:36:30,107 INFO L87 Difference]: Start difference. First operand 4804 states and 8007 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:31,297 INFO L93 Difference]: Finished difference Result 29000 states and 48433 transitions. [2021-11-13 18:36:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:36:31,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2021-11-13 18:36:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:31,441 INFO L225 Difference]: With dead ends: 29000 [2021-11-13 18:36:31,441 INFO L226 Difference]: Without dead ends: 24742 [2021-11-13 18:36:31,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:36:31,456 INFO L933 BasicCegarLoop]: 1257 mSDtfsCounter, 3257 mSDsluCounter, 10080 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 243.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 11337 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 52.34ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 311.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:31,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3257 Valid, 11337 Invalid, 307 Unknown, 0 Unchecked, 52.34ms Time], IncrementalHoareTripleChecker [8 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 311.71ms Time] [2021-11-13 18:36:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24742 states. [2021-11-13 18:36:32,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24742 to 8898. [2021-11-13 18:36:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8898 states, 8897 states have (on average 1.6598853546139147) internal successors, (14768), 8897 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8898 states to 8898 states and 14768 transitions. [2021-11-13 18:36:32,279 INFO L78 Accepts]: Start accepts. Automaton has 8898 states and 14768 transitions. Word has length 232 [2021-11-13 18:36:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:32,280 INFO L470 AbstractCegarLoop]: Abstraction has 8898 states and 14768 transitions. [2021-11-13 18:36:32,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8898 states and 14768 transitions. [2021-11-13 18:36:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-13 18:36:32,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:32,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:32,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:36:32,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash 862725536, now seen corresponding path program 1 times [2021-11-13 18:36:32,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:32,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488250891] [2021-11-13 18:36:32,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:32,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:32,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:32,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488250891] [2021-11-13 18:36:32,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488250891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:32,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:32,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:32,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536103098] [2021-11-13 18:36:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:32,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:36:32,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:36:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:36:32,466 INFO L87 Difference]: Start difference. First operand 8898 states and 14768 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:33,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:33,038 INFO L93 Difference]: Finished difference Result 25982 states and 43236 transitions. [2021-11-13 18:36:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:36:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2021-11-13 18:36:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:33,080 INFO L225 Difference]: With dead ends: 25982 [2021-11-13 18:36:33,080 INFO L226 Difference]: Without dead ends: 17630 [2021-11-13 18:36:33,095 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 [2021-11-13 18:36:33,096 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 819 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:33,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 3755 Invalid, 42 Unknown, 0 Unchecked, 9.88ms Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 54.90ms Time] [2021-11-13 18:36:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17630 states. [2021-11-13 18:36:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17630 to 13231. [2021-11-13 18:36:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13231 states, 13230 states have (on average 1.6610733182161754) internal successors, (21976), 13230 states have internal predecessors, (21976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:33,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13231 states to 13231 states and 21976 transitions. [2021-11-13 18:36:33,845 INFO L78 Accepts]: Start accepts. Automaton has 13231 states and 21976 transitions. Word has length 233 [2021-11-13 18:36:33,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:33,847 INFO L470 AbstractCegarLoop]: Abstraction has 13231 states and 21976 transitions. [2021-11-13 18:36:33,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand 13231 states and 21976 transitions. [2021-11-13 18:36:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-13 18:36:33,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:33,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:33,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 18:36:33,862 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:33,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:33,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1122687211, now seen corresponding path program 1 times [2021-11-13 18:36:33,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:33,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40947552] [2021-11-13 18:36:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:33,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:34,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:34,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40947552] [2021-11-13 18:36:34,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40947552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:34,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:34,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:34,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437195063] [2021-11-13 18:36:34,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:34,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:36:34,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:34,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:36:34,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:36:34,037 INFO L87 Difference]: Start difference. First operand 13231 states and 21976 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:34,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:34,808 INFO L93 Difference]: Finished difference Result 38918 states and 64718 transitions. [2021-11-13 18:36:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:36:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2021-11-13 18:36:34,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:34,877 INFO L225 Difference]: With dead ends: 38918 [2021-11-13 18:36:34,878 INFO L226 Difference]: Without dead ends: 26233 [2021-11-13 18:36:34,901 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 [2021-11-13 18:36:34,902 INFO L933 BasicCegarLoop]: 1240 mSDtfsCounter, 819 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.34ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:34,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 3954 Invalid, 52 Unknown, 0 Unchecked, 11.34ms Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 64.50ms Time] [2021-11-13 18:36:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26233 states. [2021-11-13 18:36:35,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26233 to 19684. [2021-11-13 18:36:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19684 states, 19683 states have (on average 1.6591474876797236) internal successors, (32657), 19683 states have internal predecessors, (32657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19684 states to 19684 states and 32657 transitions. [2021-11-13 18:36:35,937 INFO L78 Accepts]: Start accepts. Automaton has 19684 states and 32657 transitions. Word has length 234 [2021-11-13 18:36:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:35,937 INFO L470 AbstractCegarLoop]: Abstraction has 19684 states and 32657 transitions. [2021-11-13 18:36:35,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 19684 states and 32657 transitions. [2021-11-13 18:36:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:36:35,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:35,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:35,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:36:35,954 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash 769143239, now seen corresponding path program 1 times [2021-11-13 18:36:35,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:35,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83031143] [2021-11-13 18:36:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:35,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:36,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:36,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83031143] [2021-11-13 18:36:36,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83031143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:36,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:36,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:36,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051294855] [2021-11-13 18:36:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:36,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:36,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:36,126 INFO L87 Difference]: Start difference. First operand 19684 states and 32657 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:37,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:37,066 INFO L93 Difference]: Finished difference Result 43821 states and 72901 transitions. [2021-11-13 18:36:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:37,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:36:37,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:37,151 INFO L225 Difference]: With dead ends: 43821 [2021-11-13 18:36:37,151 INFO L226 Difference]: Without dead ends: 30507 [2021-11-13 18:36:37,180 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 [2021-11-13 18:36:37,182 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 258 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.17ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:37,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 2690 Invalid, 7 Unknown, 0 Unchecked, 6.17ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 15.23ms Time] [2021-11-13 18:36:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30507 states. [2021-11-13 18:36:38,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30507 to 30505. [2021-11-13 18:36:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30505 states, 30504 states have (on average 1.656209021767637) internal successors, (50521), 30504 states have internal predecessors, (50521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30505 states to 30505 states and 50521 transitions. [2021-11-13 18:36:38,542 INFO L78 Accepts]: Start accepts. Automaton has 30505 states and 50521 transitions. Word has length 235 [2021-11-13 18:36:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:38,542 INFO L470 AbstractCegarLoop]: Abstraction has 30505 states and 50521 transitions. [2021-11-13 18:36:38,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30505 states and 50521 transitions. [2021-11-13 18:36:38,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:36:38,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:38,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:38,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:36:38,552 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1580766843, now seen corresponding path program 1 times [2021-11-13 18:36:38,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:38,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613706181] [2021-11-13 18:36:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:38,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:38,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:38,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613706181] [2021-11-13 18:36:38,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613706181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:38,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:38,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:38,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130264682] [2021-11-13 18:36:38,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:38,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:38,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:38,713 INFO L87 Difference]: Start difference. First operand 30505 states and 50521 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:40,029 INFO L93 Difference]: Finished difference Result 59358 states and 98411 transitions. [2021-11-13 18:36:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:40,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:36:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:40,165 INFO L225 Difference]: With dead ends: 59358 [2021-11-13 18:36:40,165 INFO L226 Difference]: Without dead ends: 43336 [2021-11-13 18:36:40,197 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 [2021-11-13 18:36:40,199 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 242 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2629 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.75ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.23ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:40,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 2629 Invalid, 7 Unknown, 0 Unchecked, 5.75ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 16.23ms Time] [2021-11-13 18:36:40,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43336 states. [2021-11-13 18:36:41,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43336 to 43334. [2021-11-13 18:36:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43334 states, 43333 states have (on average 1.651420395541504) internal successors, (71561), 43333 states have internal predecessors, (71561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43334 states to 43334 states and 71561 transitions. [2021-11-13 18:36:41,781 INFO L78 Accepts]: Start accepts. Automaton has 43334 states and 71561 transitions. Word has length 235 [2021-11-13 18:36:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:41,781 INFO L470 AbstractCegarLoop]: Abstraction has 43334 states and 71561 transitions. [2021-11-13 18:36:41,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 43334 states and 71561 transitions. [2021-11-13 18:36:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:36:41,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:41,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:41,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 18:36:41,789 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1900282093, now seen corresponding path program 1 times [2021-11-13 18:36:41,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:41,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305006982] [2021-11-13 18:36:41,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:41,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:41,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:41,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305006982] [2021-11-13 18:36:41,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305006982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:41,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:41,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:41,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298986605] [2021-11-13 18:36:41,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:41,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:41,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:41,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:41,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:41,941 INFO L87 Difference]: Start difference. First operand 43334 states and 71561 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:43,508 INFO L93 Difference]: Finished difference Result 84210 states and 139265 transitions. [2021-11-13 18:36:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:36:43,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:43,749 INFO L225 Difference]: With dead ends: 84210 [2021-11-13 18:36:43,750 INFO L226 Difference]: Without dead ends: 61434 [2021-11-13 18:36:43,809 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 [2021-11-13 18:36:43,810 INFO L933 BasicCegarLoop]: 1341 mSDtfsCounter, 226 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.24ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.35ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:43,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 2559 Invalid, 7 Unknown, 0 Unchecked, 5.24ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 20.35ms Time] [2021-11-13 18:36:43,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61434 states. [2021-11-13 18:36:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61434 to 61432. [2021-11-13 18:36:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61432 states, 61431 states have (on average 1.646448861324087) internal successors, (101143), 61431 states have internal predecessors, (101143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61432 states to 61432 states and 101143 transitions. [2021-11-13 18:36:45,967 INFO L78 Accepts]: Start accepts. Automaton has 61432 states and 101143 transitions. Word has length 235 [2021-11-13 18:36:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:45,968 INFO L470 AbstractCegarLoop]: Abstraction has 61432 states and 101143 transitions. [2021-11-13 18:36:45,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 61432 states and 101143 transitions. [2021-11-13 18:36:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:36:45,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:45,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:45,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 18:36:45,976 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:45,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:45,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1923031415, now seen corresponding path program 1 times [2021-11-13 18:36:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:45,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252198782] [2021-11-13 18:36:45,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:45,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:46,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:46,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252198782] [2021-11-13 18:36:46,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252198782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:46,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:46,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:36:46,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715098779] [2021-11-13 18:36:46,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:46,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:36:46,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:36:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:36:46,178 INFO L87 Difference]: Start difference. First operand 61432 states and 101143 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:49,173 INFO L93 Difference]: Finished difference Result 200897 states and 331306 transitions. [2021-11-13 18:36:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:36:49,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:36:49,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:49,414 INFO L225 Difference]: With dead ends: 200897 [2021-11-13 18:36:49,415 INFO L226 Difference]: Without dead ends: 140260 [2021-11-13 18:36:49,518 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 [2021-11-13 18:36:49,519 INFO L933 BasicCegarLoop]: 1240 mSDtfsCounter, 817 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.21ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:49,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3956 Invalid, 52 Unknown, 0 Unchecked, 10.55ms Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 63.21ms Time] [2021-11-13 18:36:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140260 states. [2021-11-13 18:36:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140260 to 100670. [2021-11-13 18:36:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100670 states, 100669 states have (on average 1.6435744866840836) internal successors, (165457), 100669 states have internal predecessors, (165457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100670 states to 100670 states and 165457 transitions. [2021-11-13 18:36:52,958 INFO L78 Accepts]: Start accepts. Automaton has 100670 states and 165457 transitions. Word has length 235 [2021-11-13 18:36:52,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:36:52,959 INFO L470 AbstractCegarLoop]: Abstraction has 100670 states and 165457 transitions. [2021-11-13 18:36:52,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:52,960 INFO L276 IsEmpty]: Start isEmpty. Operand 100670 states and 165457 transitions. [2021-11-13 18:36:52,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:36:52,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:36:52,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:36:52,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 18:36:52,989 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:36:52,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:36:52,990 INFO L85 PathProgramCache]: Analyzing trace with hash 568583988, now seen corresponding path program 1 times [2021-11-13 18:36:52,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:36:53,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47154206] [2021-11-13 18:36:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:36:53,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:36:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:36:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:36:53,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:36:53,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47154206] [2021-11-13 18:36:53,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47154206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:36:53,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:36:53,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:36:53,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293044106] [2021-11-13 18:36:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:36:53,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:36:53,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:36:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:36:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:36:53,160 INFO L87 Difference]: Start difference. First operand 100670 states and 165457 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:36:55,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:36:55,774 INFO L93 Difference]: Finished difference Result 195684 states and 322209 transitions. [2021-11-13 18:36:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:36:55,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:36:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:36:55,989 INFO L225 Difference]: With dead ends: 195684 [2021-11-13 18:36:55,989 INFO L226 Difference]: Without dead ends: 142036 [2021-11-13 18:36:56,030 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 [2021-11-13 18:36:56,031 INFO L933 BasicCegarLoop]: 1389 mSDtfsCounter, 234 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2606 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.61ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:36:56,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2606 Invalid, 7 Unknown, 0 Unchecked, 4.61ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 14.15ms Time] [2021-11-13 18:36:56,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142036 states. [2021-11-13 18:36:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142036 to 142034. [2021-11-13 18:36:59,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142034 states, 142033 states have (on average 1.638330528820767) internal successors, (232697), 142033 states have internal predecessors, (232697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:37:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142034 states to 142034 states and 232697 transitions. [2021-11-13 18:37:00,276 INFO L78 Accepts]: Start accepts. Automaton has 142034 states and 232697 transitions. Word has length 235 [2021-11-13 18:37:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 142034 states and 232697 transitions. [2021-11-13 18:37:00,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:37:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 142034 states and 232697 transitions. [2021-11-13 18:37:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-13 18:37:00,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:00,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:00,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 18:37:00,284 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash -311882046, now seen corresponding path program 1 times [2021-11-13 18:37:00,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:00,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384741849] [2021-11-13 18:37:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:00,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:00,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:00,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384741849] [2021-11-13 18:37:00,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384741849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:00,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:00,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:37:00,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992200981] [2021-11-13 18:37:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:00,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:37:00,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:37:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:37:00,425 INFO L87 Difference]: Start difference. First operand 142034 states and 232697 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:37:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:37:04,686 INFO L93 Difference]: Finished difference Result 314256 states and 515212 transitions. [2021-11-13 18:37:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:37:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2021-11-13 18:37:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:37:05,081 INFO L225 Difference]: With dead ends: 314256 [2021-11-13 18:37:05,082 INFO L226 Difference]: Without dead ends: 216220 [2021-11-13 18:37:05,166 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 [2021-11-13 18:37:05,166 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 250 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.71ms IncrementalHoareTripleChecker+Time [2021-11-13 18:37:05,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2675 Invalid, 7 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 16.71ms Time] [2021-11-13 18:37:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216220 states. [2021-11-13 18:37:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216220 to 216218. [2021-11-13 18:37:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216218 states, 216217 states have (on average 1.6297932169995883) internal successors, (352389), 216217 states have internal predecessors, (352389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:37:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216218 states to 216218 states and 352389 transitions. [2021-11-13 18:37:11,109 INFO L78 Accepts]: Start accepts. Automaton has 216218 states and 352389 transitions. Word has length 235 [2021-11-13 18:37:11,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:37:11,110 INFO L470 AbstractCegarLoop]: Abstraction has 216218 states and 352389 transitions. [2021-11-13 18:37:11,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:37:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 216218 states and 352389 transitions. [2021-11-13 18:37:11,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-13 18:37:11,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:37:11,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:37:11,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 18:37:11,113 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:37:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:37:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 2020032652, now seen corresponding path program 1 times [2021-11-13 18:37:11,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:37:11,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223441835] [2021-11-13 18:37:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:37:11,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:37:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:37:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:37:11,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:37:11,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223441835] [2021-11-13 18:37:11,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223441835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:37:11,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:37:11,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:37:11,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221346278] [2021-11-13 18:37:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:37:11,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:37:11,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:37:11,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:37:11,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:37:11,230 INFO L87 Difference]: Start difference. First operand 216218 states and 352389 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)