./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:14:12,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:14:12,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:14:12,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:14:12,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:14:12,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:14:12,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:14:12,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:14:12,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:14:12,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:14:12,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:14:12,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:14:12,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:14:12,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:14:12,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:14:12,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:14:12,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:14:12,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:14:12,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:14:12,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:14:12,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:14:12,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:14:12,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:14:12,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:14:12,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:14:12,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:14:12,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:14:12,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:14:12,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:14:12,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:14:12,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:14:12,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:14:12,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:14:13,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:14:13,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:14:13,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:14:13,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:14:13,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:14:13,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:14:13,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:14:13,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:14:13,007 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:14:13,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:14:13,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:14:13,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:14:13,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:14:13,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:14:13,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:14:13,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:14:13,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:14:13,035 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:14:13,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:14:13,036 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:14:13,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:14:13,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:14:13,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:14:13,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:14:13,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:14:13,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:14:13,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:14:13,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:14:13,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:14:13,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:14:13,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:14:13,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:14:13,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:14:13,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:13,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:14:13,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:14:13,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:14:13,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:14:13,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:14:13,040 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:14:13,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:14:13,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:14:13,041 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_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 [2022-11-02 20:14:13,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:14:13,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:14:13,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:14:13,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:14:13,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:14:13,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2022-11-02 20:14:13,444 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/data/0723c2a69/74d41940dac246938df4447de0d9c6b8/FLAG57701ac6e [2022-11-02 20:14:14,281 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:14:14,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2022-11-02 20:14:14,314 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/data/0723c2a69/74d41940dac246938df4447de0d9c6b8/FLAG57701ac6e [2022-11-02 20:14:14,784 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/data/0723c2a69/74d41940dac246938df4447de0d9c6b8 [2022-11-02 20:14:14,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:14:14,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:14:14,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:14,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:14:14,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:14:14,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:14" (1/1) ... [2022-11-02 20:14:14,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58170d13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:14, skipping insertion in model container [2022-11-02 20:14:14,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:14:14" (1/1) ... [2022-11-02 20:14:14,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:14:14,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:14:15,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2022-11-02 20:14:15,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2022-11-02 20:14:16,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:16,519 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:14:16,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2022-11-02 20:14:16,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2022-11-02 20:14:17,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:14:17,252 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:14:17,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17 WrapperNode [2022-11-02 20:14:17,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:14:17,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:17,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:14:17,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:14:17,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,746 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5149 [2022-11-02 20:14:17,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:14:17,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:14:17,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:14:17,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:14:17,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:17,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:18,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:18,040 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:18,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:18,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:14:18,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:14:18,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:14:18,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:14:18,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (1/1) ... [2022-11-02 20:14:18,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:14:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:14:18,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:14:18,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22a853b9-7c95-44ed-a99d-196619796d8b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:14:18,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:14:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:14:18,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:14:18,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:14:18,549 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:14:18,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:14:23,853 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:14:23,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:14:23,867 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:14:23,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:23 BoogieIcfgContainer [2022-11-02 20:14:23,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:14:23,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:14:23,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:14:23,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:14:23,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:14:14" (1/3) ... [2022-11-02 20:14:23,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa5e4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:23, skipping insertion in model container [2022-11-02 20:14:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:14:17" (2/3) ... [2022-11-02 20:14:23,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa5e4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:14:23, skipping insertion in model container [2022-11-02 20:14:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:14:23" (3/3) ... [2022-11-02 20:14:23,881 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2022-11-02 20:14:23,902 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:14:23,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:14:23,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:14:24,000 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@12d27afb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:14:24,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:14:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:14:24,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:24,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:24,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:24,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:24,027 INFO L85 PathProgramCache]: Analyzing trace with hash 340623278, now seen corresponding path program 1 times [2022-11-02 20:14:24,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:24,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97065976] [2022-11-02 20:14:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:24,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97065976] [2022-11-02 20:14:24,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97065976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:24,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:24,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:14:24,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185631697] [2022-11-02 20:14:24,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:24,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:14:24,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:14:24,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:14:24,301 INFO L87 Difference]: Start difference. First operand has 926 states, 923 states have (on average 1.8992416034669555) internal successors, (1753), 925 states have internal predecessors, (1753), 0 states have call successors, (0), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:24,407 INFO L93 Difference]: Finished difference Result 1806 states and 3418 transitions. [2022-11-02 20:14:24,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:14:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-02 20:14:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:24,438 INFO L225 Difference]: With dead ends: 1806 [2022-11-02 20:14:24,443 INFO L226 Difference]: Without dead ends: 860 [2022-11-02 20:14:24,452 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:14:24,457 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:24,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:24,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-02 20:14:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-11-02 20:14:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8881118881118881) internal successors, (1620), 859 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1620 transitions. [2022-11-02 20:14:24,563 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1620 transitions. Word has length 38 [2022-11-02 20:14:24,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:24,569 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1620 transitions. [2022-11-02 20:14:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1620 transitions. [2022-11-02 20:14:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:14:24,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:24,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:24,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:14:24,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:24,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash 615382892, now seen corresponding path program 1 times [2022-11-02 20:14:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:24,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616884436] [2022-11-02 20:14:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:24,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:24,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:24,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616884436] [2022-11-02 20:14:24,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616884436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:24,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:24,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:14:24,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791957361] [2022-11-02 20:14:24,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:14:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:14:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:24,927 INFO L87 Difference]: Start difference. First operand 860 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:25,179 INFO L93 Difference]: Finished difference Result 924 states and 1719 transitions. [2022-11-02 20:14:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:14:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-11-02 20:14:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:25,184 INFO L225 Difference]: With dead ends: 924 [2022-11-02 20:14:25,185 INFO L226 Difference]: Without dead ends: 860 [2022-11-02 20:14:25,185 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:14:25,187 INFO L413 NwaCegarLoop]: 1618 mSDtfsCounter, 3 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6429 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:25,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6429 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-02 20:14:25,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2022-11-02 20:14:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8414918414918415) internal successors, (1580), 859 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:25,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1580 transitions. [2022-11-02 20:14:25,218 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1580 transitions. Word has length 38 [2022-11-02 20:14:25,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:25,218 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1580 transitions. [2022-11-02 20:14:25,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:25,219 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1580 transitions. [2022-11-02 20:14:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 20:14:25,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:25,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:14:25,222 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -117834811, now seen corresponding path program 1 times [2022-11-02 20:14:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:25,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344405378] [2022-11-02 20:14:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:25,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344405378] [2022-11-02 20:14:25,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344405378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:25,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:25,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574506304] [2022-11-02 20:14:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:14:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:14:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:14:25,608 INFO L87 Difference]: Start difference. First operand 860 states and 1580 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:34,830 INFO L93 Difference]: Finished difference Result 3115 states and 5889 transitions. [2022-11-02 20:14:34,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:14:34,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-02 20:14:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:34,841 INFO L225 Difference]: With dead ends: 3115 [2022-11-02 20:14:34,841 INFO L226 Difference]: Without dead ends: 2362 [2022-11-02 20:14:34,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:14:34,845 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 2463 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:34,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2463 Valid, 852 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-02 20:14:34,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-11-02 20:14:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2022-11-02 20:14:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2360 states have (on average 1.5703389830508474) internal successors, (3706), 2361 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3706 transitions. [2022-11-02 20:14:34,923 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3706 transitions. Word has length 60 [2022-11-02 20:14:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:34,924 INFO L495 AbstractCegarLoop]: Abstraction has 2362 states and 3706 transitions. [2022-11-02 20:14:34,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3706 transitions. [2022-11-02 20:14:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:14:34,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:34,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:14:34,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:34,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2101054792, now seen corresponding path program 1 times [2022-11-02 20:14:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:34,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237601244] [2022-11-02 20:14:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:34,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:35,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:35,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237601244] [2022-11-02 20:14:35,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237601244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:35,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:35,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:35,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84383220] [2022-11-02 20:14:35,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:35,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:35,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:35,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:35,090 INFO L87 Difference]: Start difference. First operand 2362 states and 3706 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:35,161 INFO L93 Difference]: Finished difference Result 2476 states and 3886 transitions. [2022-11-02 20:14:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 20:14:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:35,172 INFO L225 Difference]: With dead ends: 2476 [2022-11-02 20:14:35,173 INFO L226 Difference]: Without dead ends: 2416 [2022-11-02 20:14:35,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:35,176 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 1524 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:35,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1754 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:35,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2022-11-02 20:14:35,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2414. [2022-11-02 20:14:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2414 states, 2412 states have (on average 1.5708955223880596) internal successors, (3789), 2413 states have internal predecessors, (3789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2414 states to 2414 states and 3789 transitions. [2022-11-02 20:14:35,262 INFO L78 Accepts]: Start accepts. Automaton has 2414 states and 3789 transitions. Word has length 77 [2022-11-02 20:14:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:35,262 INFO L495 AbstractCegarLoop]: Abstraction has 2414 states and 3789 transitions. [2022-11-02 20:14:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2414 states and 3789 transitions. [2022-11-02 20:14:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:14:35,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:35,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:35,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:14:35,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:35,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:35,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1452480302, now seen corresponding path program 1 times [2022-11-02 20:14:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:35,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476081671] [2022-11-02 20:14:35,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:35,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476081671] [2022-11-02 20:14:35,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476081671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:35,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:35,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:35,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989150692] [2022-11-02 20:14:35,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:35,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:35,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:35,447 INFO L87 Difference]: Start difference. First operand 2414 states and 3789 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:35,505 INFO L93 Difference]: Finished difference Result 2626 states and 4125 transitions. [2022-11-02 20:14:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:35,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 20:14:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:35,517 INFO L225 Difference]: With dead ends: 2626 [2022-11-02 20:14:35,517 INFO L226 Difference]: Without dead ends: 2514 [2022-11-02 20:14:35,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:35,520 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1504 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:35,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1717 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:35,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2022-11-02 20:14:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2512. [2022-11-02 20:14:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2510 states have (on average 1.5713147410358566) internal successors, (3944), 2511 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3944 transitions. [2022-11-02 20:14:35,592 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3944 transitions. Word has length 77 [2022-11-02 20:14:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:35,592 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3944 transitions. [2022-11-02 20:14:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3944 transitions. [2022-11-02 20:14:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 20:14:35,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:35,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:35,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:14:35,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:35,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1624501596, now seen corresponding path program 1 times [2022-11-02 20:14:35,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:35,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349627987] [2022-11-02 20:14:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:35,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:35,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349627987] [2022-11-02 20:14:35,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349627987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:35,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:35,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:35,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942813236] [2022-11-02 20:14:35,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:35,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:35,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:35,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:35,808 INFO L87 Difference]: Start difference. First operand 2512 states and 3944 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:36,307 INFO L93 Difference]: Finished difference Result 5032 states and 7940 transitions. [2022-11-02 20:14:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:14:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-02 20:14:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:36,329 INFO L225 Difference]: With dead ends: 5032 [2022-11-02 20:14:36,330 INFO L226 Difference]: Without dead ends: 4822 [2022-11-02 20:14:36,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:14:36,335 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 10491 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10491 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:36,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10491 Valid, 2765 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2022-11-02 20:14:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 2720. [2022-11-02 20:14:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2718 states have (on average 1.5702722590139808) internal successors, (4268), 2719 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4268 transitions. [2022-11-02 20:14:36,475 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 4268 transitions. Word has length 77 [2022-11-02 20:14:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:36,475 INFO L495 AbstractCegarLoop]: Abstraction has 2720 states and 4268 transitions. [2022-11-02 20:14:36,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 4268 transitions. [2022-11-02 20:14:36,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:36,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:36,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:14:36,478 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash 806369108, now seen corresponding path program 1 times [2022-11-02 20:14:36,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:36,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103997053] [2022-11-02 20:14:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:36,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:36,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103997053] [2022-11-02 20:14:36,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103997053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:36,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:36,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11345366] [2022-11-02 20:14:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:36,608 INFO L87 Difference]: Start difference. First operand 2720 states and 4268 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:36,721 INFO L93 Difference]: Finished difference Result 3340 states and 5240 transitions. [2022-11-02 20:14:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:36,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:36,733 INFO L225 Difference]: With dead ends: 3340 [2022-11-02 20:14:36,733 INFO L226 Difference]: Without dead ends: 2922 [2022-11-02 20:14:36,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:36,736 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1496 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:36,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1675 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-11-02 20:14:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-11-02 20:14:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.5681973954763537) internal successors, (4576), 2919 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4576 transitions. [2022-11-02 20:14:36,876 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4576 transitions. Word has length 79 [2022-11-02 20:14:36,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:36,876 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4576 transitions. [2022-11-02 20:14:36,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4576 transitions. [2022-11-02 20:14:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:36,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:36,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:14:36,878 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:36,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 872862620, now seen corresponding path program 1 times [2022-11-02 20:14:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:36,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167058605] [2022-11-02 20:14:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:37,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:37,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167058605] [2022-11-02 20:14:37,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167058605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:37,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:37,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:37,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436080895] [2022-11-02 20:14:37,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:37,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:37,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:37,336 INFO L87 Difference]: Start difference. First operand 2920 states and 4576 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:37,752 INFO L93 Difference]: Finished difference Result 3538 states and 5540 transitions. [2022-11-02 20:14:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:14:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:37,764 INFO L225 Difference]: With dead ends: 3538 [2022-11-02 20:14:37,765 INFO L226 Difference]: Without dead ends: 2922 [2022-11-02 20:14:37,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:14:37,767 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 3281 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3281 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:37,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3281 Valid, 2067 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2022-11-02 20:14:37,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2920. [2022-11-02 20:14:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2918 states have (on average 1.5661411925976696) internal successors, (4570), 2919 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4570 transitions. [2022-11-02 20:14:37,907 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4570 transitions. Word has length 79 [2022-11-02 20:14:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:37,907 INFO L495 AbstractCegarLoop]: Abstraction has 2920 states and 4570 transitions. [2022-11-02 20:14:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:37,907 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4570 transitions. [2022-11-02 20:14:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:37,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:37,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:37,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:14:37,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:37,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -385682984, now seen corresponding path program 1 times [2022-11-02 20:14:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:37,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194415582] [2022-11-02 20:14:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:37,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:37,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194415582] [2022-11-02 20:14:37,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194415582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:37,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:37,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:37,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164258237] [2022-11-02 20:14:37,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:37,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:37,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:37,981 INFO L87 Difference]: Start difference. First operand 2920 states and 4570 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:38,217 INFO L93 Difference]: Finished difference Result 4080 states and 6364 transitions. [2022-11-02 20:14:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:38,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:38,240 INFO L225 Difference]: With dead ends: 4080 [2022-11-02 20:14:38,241 INFO L226 Difference]: Without dead ends: 3464 [2022-11-02 20:14:38,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:38,243 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1508 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:38,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1726 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-11-02 20:14:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3462. [2022-11-02 20:14:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3462 states, 3460 states have (on average 1.5589595375722543) internal successors, (5394), 3461 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5394 transitions. [2022-11-02 20:14:38,462 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5394 transitions. Word has length 79 [2022-11-02 20:14:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:38,462 INFO L495 AbstractCegarLoop]: Abstraction has 3462 states and 5394 transitions. [2022-11-02 20:14:38,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5394 transitions. [2022-11-02 20:14:38,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:38,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:38,464 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:14:38,464 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash -111995272, now seen corresponding path program 1 times [2022-11-02 20:14:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:38,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530613209] [2022-11-02 20:14:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:38,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:38,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530613209] [2022-11-02 20:14:38,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530613209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:38,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:38,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81377256] [2022-11-02 20:14:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:38,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:38,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:38,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:38,536 INFO L87 Difference]: Start difference. First operand 3462 states and 5394 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:38,882 INFO L93 Difference]: Finished difference Result 5634 states and 8716 transitions. [2022-11-02 20:14:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:38,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:38,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:38,903 INFO L225 Difference]: With dead ends: 5634 [2022-11-02 20:14:38,903 INFO L226 Difference]: Without dead ends: 4476 [2022-11-02 20:14:38,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:38,907 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1512 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:38,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1735 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2022-11-02 20:14:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4474. [2022-11-02 20:14:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 1.545169946332737) internal successors, (6910), 4473 states have internal predecessors, (6910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 6910 transitions. [2022-11-02 20:14:39,322 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 6910 transitions. Word has length 79 [2022-11-02 20:14:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:39,323 INFO L495 AbstractCegarLoop]: Abstraction has 4474 states and 6910 transitions. [2022-11-02 20:14:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 6910 transitions. [2022-11-02 20:14:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:39,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:39,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:14:39,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1707076376, now seen corresponding path program 1 times [2022-11-02 20:14:39,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985335613] [2022-11-02 20:14:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:39,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985335613] [2022-11-02 20:14:39,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985335613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:39,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:39,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320049009] [2022-11-02 20:14:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:39,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:39,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:39,415 INFO L87 Difference]: Start difference. First operand 4474 states and 6910 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:39,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:39,946 INFO L93 Difference]: Finished difference Result 8526 states and 13024 transitions. [2022-11-02 20:14:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:39,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:39,960 INFO L225 Difference]: With dead ends: 8526 [2022-11-02 20:14:39,960 INFO L226 Difference]: Without dead ends: 6356 [2022-11-02 20:14:39,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:39,965 INFO L413 NwaCegarLoop]: 1643 mSDtfsCounter, 1516 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:39,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2022-11-02 20:14:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 6354. [2022-11-02 20:14:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6354 states, 6352 states have (on average 1.5236146095717884) internal successors, (9678), 6353 states have internal predecessors, (9678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6354 states to 6354 states and 9678 transitions. [2022-11-02 20:14:40,777 INFO L78 Accepts]: Start accepts. Automaton has 6354 states and 9678 transitions. Word has length 79 [2022-11-02 20:14:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:40,778 INFO L495 AbstractCegarLoop]: Abstraction has 6354 states and 9678 transitions. [2022-11-02 20:14:40,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 6354 states and 9678 transitions. [2022-11-02 20:14:40,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-02 20:14:40,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:40,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:40,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:14:40,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1886482360, now seen corresponding path program 1 times [2022-11-02 20:14:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:40,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587593705] [2022-11-02 20:14:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:40,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587593705] [2022-11-02 20:14:40,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587593705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:40,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:40,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:14:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72680565] [2022-11-02 20:14:40,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:14:40,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:14:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:40,854 INFO L87 Difference]: Start difference. First operand 6354 states and 9678 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:41,927 INFO L93 Difference]: Finished difference Result 13878 states and 20848 transitions. [2022-11-02 20:14:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:14:41,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-02 20:14:41,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:41,947 INFO L225 Difference]: With dead ends: 13878 [2022-11-02 20:14:41,948 INFO L226 Difference]: Without dead ends: 9828 [2022-11-02 20:14:41,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:14:41,955 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1520 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:41,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1753 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9828 states. [2022-11-02 20:14:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9828 to 9826. [2022-11-02 20:14:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9826 states, 9824 states have (on average 1.4949104234527688) internal successors, (14686), 9825 states have internal predecessors, (14686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:43,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9826 states to 9826 states and 14686 transitions. [2022-11-02 20:14:43,037 INFO L78 Accepts]: Start accepts. Automaton has 9826 states and 14686 transitions. Word has length 79 [2022-11-02 20:14:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 9826 states and 14686 transitions. [2022-11-02 20:14:43,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 9826 states and 14686 transitions. [2022-11-02 20:14:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:14:43,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:43,042 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:14:43,043 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash 874214487, now seen corresponding path program 1 times [2022-11-02 20:14:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:43,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001457584] [2022-11-02 20:14:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:14:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:43,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001457584] [2022-11-02 20:14:43,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001457584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:43,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:43,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432049481] [2022-11-02 20:14:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:43,362 INFO L87 Difference]: Start difference. First operand 9826 states and 14686 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:45,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:45,460 INFO L93 Difference]: Finished difference Result 16289 states and 23957 transitions. [2022-11-02 20:14:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:14:45,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:14:45,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:45,494 INFO L225 Difference]: With dead ends: 16289 [2022-11-02 20:14:45,494 INFO L226 Difference]: Without dead ends: 16287 [2022-11-02 20:14:45,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:14:45,499 INFO L413 NwaCegarLoop]: 1609 mSDtfsCounter, 730 mSDsluCounter, 9164 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 10773 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:45,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 10773 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:14:45,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16287 states. [2022-11-02 20:14:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16287 to 10210. [2022-11-02 20:14:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10210 states, 10208 states have (on average 1.4731583072100314) internal successors, (15038), 10209 states have internal predecessors, (15038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10210 states to 10210 states and 15038 transitions. [2022-11-02 20:14:46,597 INFO L78 Accepts]: Start accepts. Automaton has 10210 states and 15038 transitions. Word has length 80 [2022-11-02 20:14:46,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:46,598 INFO L495 AbstractCegarLoop]: Abstraction has 10210 states and 15038 transitions. [2022-11-02 20:14:46,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10210 states and 15038 transitions. [2022-11-02 20:14:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:14:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:46,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:14:46,605 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1411161737, now seen corresponding path program 1 times [2022-11-02 20:14:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:46,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699470504] [2022-11-02 20:14:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:14:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:46,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699470504] [2022-11-02 20:14:46,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699470504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:46,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:46,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:46,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968569308] [2022-11-02 20:14:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:46,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:46,839 INFO L87 Difference]: Start difference. First operand 10210 states and 15038 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:14:52,222 INFO L93 Difference]: Finished difference Result 59216 states and 85749 transitions. [2022-11-02 20:14:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:14:52,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:14:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:14:52,312 INFO L225 Difference]: With dead ends: 59216 [2022-11-02 20:14:52,312 INFO L226 Difference]: Without dead ends: 51310 [2022-11-02 20:14:52,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:14:52,330 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8615 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8615 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:14:52,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8615 Valid, 3817 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:14:52,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51310 states. [2022-11-02 20:14:55,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51310 to 18114. [2022-11-02 20:14:55,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18114 states, 18112 states have (on average 1.4557199646643109) internal successors, (26366), 18113 states have internal predecessors, (26366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18114 states to 18114 states and 26366 transitions. [2022-11-02 20:14:55,145 INFO L78 Accepts]: Start accepts. Automaton has 18114 states and 26366 transitions. Word has length 112 [2022-11-02 20:14:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:14:55,145 INFO L495 AbstractCegarLoop]: Abstraction has 18114 states and 26366 transitions. [2022-11-02 20:14:55,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:14:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 18114 states and 26366 transitions. [2022-11-02 20:14:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:14:55,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:14:55,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:14:55,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:14:55,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:14:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:14:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1381639519, now seen corresponding path program 1 times [2022-11-02 20:14:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:14:55,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225882508] [2022-11-02 20:14:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:14:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:14:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:14:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:14:55,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:14:55,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225882508] [2022-11-02 20:14:55,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225882508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:14:55,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:14:55,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:14:55,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890498279] [2022-11-02 20:14:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:14:55,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:14:55,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:14:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:14:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:14:55,408 INFO L87 Difference]: Start difference. First operand 18114 states and 26366 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:02,426 INFO L93 Difference]: Finished difference Result 67120 states and 97077 transitions. [2022-11-02 20:15:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:15:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:15:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:02,532 INFO L225 Difference]: With dead ends: 67120 [2022-11-02 20:15:02,533 INFO L226 Difference]: Without dead ends: 59214 [2022-11-02 20:15:02,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:15:02,551 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8442 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8442 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:02,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8442 Valid, 3862 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59214 states. [2022-11-02 20:15:06,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59214 to 29986. [2022-11-02 20:15:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29986 states, 29984 states have (on average 1.4433697972251867) internal successors, (43278), 29985 states have internal predecessors, (43278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:06,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29986 states to 29986 states and 43278 transitions. [2022-11-02 20:15:06,589 INFO L78 Accepts]: Start accepts. Automaton has 29986 states and 43278 transitions. Word has length 112 [2022-11-02 20:15:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:06,590 INFO L495 AbstractCegarLoop]: Abstraction has 29986 states and 43278 transitions. [2022-11-02 20:15:06,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 29986 states and 43278 transitions. [2022-11-02 20:15:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:15:06,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:06,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:15:06,600 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1107951807, now seen corresponding path program 1 times [2022-11-02 20:15:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:06,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339078429] [2022-11-02 20:15:06,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:06,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 20:15:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339078429] [2022-11-02 20:15:06,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339078429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:06,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:06,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819645944] [2022-11-02 20:15:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:06,818 INFO L87 Difference]: Start difference. First operand 29986 states and 43278 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:15:15,794 INFO L93 Difference]: Finished difference Result 75024 states and 108405 transitions. [2022-11-02 20:15:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:15:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-02 20:15:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:15:15,871 INFO L225 Difference]: With dead ends: 75024 [2022-11-02 20:15:15,871 INFO L226 Difference]: Without dead ends: 67118 [2022-11-02 20:15:15,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:15:15,890 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 8408 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8408 SdHoareTripleChecker+Valid, 3921 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:15:15,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8408 Valid, 3921 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:15:15,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67118 states. [2022-11-02 20:15:21,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67118 to 37890. [2022-11-02 20:15:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37890 states, 37888 states have (on average 1.4412478885135136) internal successors, (54606), 37889 states have internal predecessors, (54606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37890 states to 37890 states and 54606 transitions. [2022-11-02 20:15:21,162 INFO L78 Accepts]: Start accepts. Automaton has 37890 states and 54606 transitions. Word has length 112 [2022-11-02 20:15:21,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:15:21,163 INFO L495 AbstractCegarLoop]: Abstraction has 37890 states and 54606 transitions. [2022-11-02 20:15:21,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 37890 states and 54606 transitions. [2022-11-02 20:15:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-02 20:15:21,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:15:21,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:15:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:15:21,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:15:21,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash 711119841, now seen corresponding path program 1 times [2022-11-02 20:15:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:21,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682637082] [2022-11-02 20:15:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:21,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:15:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:15:21,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:15:21,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682637082] [2022-11-02 20:15:21,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682637082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:15:21,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:15:21,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:15:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330334308] [2022-11-02 20:15:21,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:15:21,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:15:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:15:21,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:15:21,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:15:21,381 INFO L87 Difference]: Start difference. First operand 37890 states and 54606 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)