./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label27.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label27.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8 --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 8f2d01fae317b054ddf6fc311dfbe1142cfd4012ffbce2b7f37ce8e1b21b188d --- 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-e04fb08 [2022-11-16 12:46:32,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:46:32,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:46:32,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:46:32,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:46:32,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:46:32,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:46:32,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:46:32,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:46:32,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:46:32,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:46:32,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:46:32,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:46:32,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:46:32,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:46:32,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:46:32,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:46:32,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:46:32,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:46:32,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:46:32,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:46:32,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:46:32,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:46:32,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:46:33,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:46:33,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:46:33,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:46:33,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:46:33,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:46:33,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:46:33,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:46:33,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:46:33,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:46:33,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:46:33,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:46:33,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:46:33,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:46:33,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:46:33,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:46:33,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:46:33,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:46:33,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:46:33,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:46:33,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:46:33,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:46:33,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:46:33,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:46:33,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:46:33,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:46:33,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:46:33,079 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:46:33,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:46:33,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:46:33,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:46:33,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:46:33,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:46:33,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:46:33,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:46:33,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:46:33,082 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:46:33,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:46:33,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:46:33,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:46:33,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:46:33,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:46:33,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:46:33,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:33,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:46:33,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:46:33,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:46:33,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:46:33,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:46:33,086 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:46:33,087 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:46:33,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:46:33,087 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_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f2d01fae317b054ddf6fc311dfbe1142cfd4012ffbce2b7f37ce8e1b21b188d [2022-11-16 12:46:33,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:46:33,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:46:33,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:46:33,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:46:33,422 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:46:33,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2022-11-16 12:46:33,522 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/data/099a95292/a430bc75be414ea781397f90e66babd1/FLAG7eb248c96 [2022-11-16 12:46:34,375 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:46:34,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/sv-benchmarks/c/eca-rers2012/Problem17_label27.c [2022-11-16 12:46:34,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/data/099a95292/a430bc75be414ea781397f90e66babd1/FLAG7eb248c96 [2022-11-16 12:46:34,414 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/data/099a95292/a430bc75be414ea781397f90e66babd1 [2022-11-16 12:46:34,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:46:34,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:46:34,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:34,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:46:34,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:46:34,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:34" (1/1) ... [2022-11-16 12:46:34,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60936c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:34, skipping insertion in model container [2022-11-16 12:46:34,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:46:34" (1/1) ... [2022-11-16 12:46:34,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:46:34,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:46:34,831 WARN L229 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_268e52c9-3400-452e-81ac-99c8d5f0b12c/sv-benchmarks/c/eca-rers2012/Problem17_label27.c[6203,6216] [2022-11-16 12:46:35,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:35,588 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:46:35,624 WARN L229 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_268e52c9-3400-452e-81ac-99c8d5f0b12c/sv-benchmarks/c/eca-rers2012/Problem17_label27.c[6203,6216] [2022-11-16 12:46:36,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:46:36,092 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:46:36,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36 WrapperNode [2022-11-16 12:46:36,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:46:36,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:36,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:46:36,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:46:36,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,475 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-11-16 12:46:36,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:46:36,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:46:36,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:46:36,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:46:36,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:46:36,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:46:36,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:46:36,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:46:36,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (1/1) ... [2022-11-16 12:46:36,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:46:36,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:46:36,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:46:36,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:46:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:46:37,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:46:37,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:46:37,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:46:37,173 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:46:37,175 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:46:41,704 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:46:41,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:46:41,727 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 12:46:41,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:41 BoogieIcfgContainer [2022-11-16 12:46:41,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:46:41,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:46:41,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:46:41,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:46:41,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:46:34" (1/3) ... [2022-11-16 12:46:41,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e79556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:41, skipping insertion in model container [2022-11-16 12:46:41,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:46:36" (2/3) ... [2022-11-16 12:46:41,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32e79556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:46:41, skipping insertion in model container [2022-11-16 12:46:41,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:46:41" (3/3) ... [2022-11-16 12:46:41,742 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label27.c [2022-11-16 12:46:41,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:46:41,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:46:41,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:46:41,873 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;@60013685, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:46:41,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 12:46:41,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:41,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 12:46:41,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:41,892 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] [2022-11-16 12:46:41,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2022-11-16 12:46:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:41,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557471604] [2022-11-16 12:46:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:42,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:42,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557471604] [2022-11-16 12:46:42,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557471604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:42,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:42,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897144916] [2022-11-16 12:46:42,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:42,365 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:46,577 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2022-11-16 12:46:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-16 12:46:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:46,604 INFO L225 Difference]: With dead ends: 1680 [2022-11-16 12:46:46,604 INFO L226 Difference]: Without dead ends: 1011 [2022-11-16 12:46:46,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:46,617 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 540 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 220 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:46:46,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-11-16 12:46:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2022-11-16 12:46:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2022-11-16 12:46:46,756 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 41 [2022-11-16 12:46:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2022-11-16 12:46:46,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2022-11-16 12:46:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-16 12:46:46,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:46,765 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, 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] [2022-11-16 12:46:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:46:46,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1125860323, now seen corresponding path program 1 times [2022-11-16 12:46:46,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:46,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371799662] [2022-11-16 12:46:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:46,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:47,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371799662] [2022-11-16 12:46:47,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371799662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:47,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:47,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587105169] [2022-11-16 12:46:47,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:47,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:47,148 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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) [2022-11-16 12:46:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:50,887 INFO L93 Difference]: Finished difference Result 2871 states and 5025 transitions. [2022-11-16 12:46:50,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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) Word has length 106 [2022-11-16 12:46:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:50,897 INFO L225 Difference]: With dead ends: 2871 [2022-11-16 12:46:50,897 INFO L226 Difference]: Without dead ends: 1877 [2022-11-16 12:46:50,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:50,909 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:50,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 520 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:46:50,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-11-16 12:46:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1870. [2022-11-16 12:46:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 1.4719101123595506) internal successors, (2751), 1869 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 2751 transitions. [2022-11-16 12:46:50,994 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 2751 transitions. Word has length 106 [2022-11-16 12:46:50,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:50,997 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 2751 transitions. [2022-11-16 12:46:50,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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) [2022-11-16 12:46:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 2751 transitions. [2022-11-16 12:46:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 12:46:51,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:51,010 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, 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] [2022-11-16 12:46:51,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:46:51,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:51,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 253179212, now seen corresponding path program 1 times [2022-11-16 12:46:51,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:51,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316446225] [2022-11-16 12:46:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:51,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:51,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:51,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316446225] [2022-11-16 12:46:51,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316446225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:51,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:51,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29134694] [2022-11-16 12:46:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:51,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:51,465 INFO L87 Difference]: Start difference. First operand 1870 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:54,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:54,935 INFO L93 Difference]: Finished difference Result 5454 states and 8039 transitions. [2022-11-16 12:46:54,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:54,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-11-16 12:46:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:54,952 INFO L225 Difference]: With dead ends: 5454 [2022-11-16 12:46:54,952 INFO L226 Difference]: Without dead ends: 3586 [2022-11-16 12:46:54,957 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 [2022-11-16 12:46:54,964 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 453 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:54,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 914 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:46:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-11-16 12:46:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3583. [2022-11-16 12:46:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3582 states have (on average 1.3355667225013959) internal successors, (4784), 3582 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 4784 transitions. [2022-11-16 12:46:55,055 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 4784 transitions. Word has length 111 [2022-11-16 12:46:55,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:55,058 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 4784 transitions. [2022-11-16 12:46:55,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:55,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 4784 transitions. [2022-11-16 12:46:55,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-16 12:46:55,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:55,061 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, 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, 1, 1] [2022-11-16 12:46:55,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:46:55,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash -111791273, now seen corresponding path program 1 times [2022-11-16 12:46:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:55,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492783329] [2022-11-16 12:46:55,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:55,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:55,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:55,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492783329] [2022-11-16 12:46:55,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492783329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:55,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:55,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:46:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10894150] [2022-11-16 12:46:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:55,331 INFO L87 Difference]: Start difference. First operand 3583 states and 4784 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:58,378 INFO L93 Difference]: Finished difference Result 10571 states and 14108 transitions. [2022-11-16 12:46:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:46:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2022-11-16 12:46:58,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:58,397 INFO L225 Difference]: With dead ends: 10571 [2022-11-16 12:46:58,397 INFO L226 Difference]: Without dead ends: 5286 [2022-11-16 12:46:58,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:58,412 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 12:46:58,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-11-16 12:46:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4434. [2022-11-16 12:46:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.2091134671779833) internal successors, (5360), 4433 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 5360 transitions. [2022-11-16 12:46:58,519 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 5360 transitions. Word has length 152 [2022-11-16 12:46:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:58,521 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 5360 transitions. [2022-11-16 12:46:58,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:46:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 5360 transitions. [2022-11-16 12:46:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-16 12:46:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:58,525 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:46:58,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:46:58,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:46:58,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:58,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1925292906, now seen corresponding path program 1 times [2022-11-16 12:46:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:46:58,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892779113] [2022-11-16 12:46:58,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:58,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:46:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:46:58,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:46:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892779113] [2022-11-16 12:46:58,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892779113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:46:58,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:46:58,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:46:58,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23281478] [2022-11-16 12:46:58,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:46:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:46:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:46:58,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:46:58,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:46:58,834 INFO L87 Difference]: Start difference. First operand 4434 states and 5360 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:01,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:01,428 INFO L93 Difference]: Finished difference Result 11414 states and 14015 transitions. [2022-11-16 12:47:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:01,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2022-11-16 12:47:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:01,451 INFO L225 Difference]: With dead ends: 11414 [2022-11-16 12:47:01,451 INFO L226 Difference]: Without dead ends: 6982 [2022-11-16 12:47:01,456 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 [2022-11-16 12:47:01,457 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:01,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:47:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2022-11-16 12:47:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6982. [2022-11-16 12:47:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6982 states, 6981 states have (on average 1.1834980661796304) internal successors, (8262), 6981 states have internal predecessors, (8262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6982 states to 6982 states and 8262 transitions. [2022-11-16 12:47:01,598 INFO L78 Accepts]: Start accepts. Automaton has 6982 states and 8262 transitions. Word has length 193 [2022-11-16 12:47:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:01,599 INFO L495 AbstractCegarLoop]: Abstraction has 6982 states and 8262 transitions. [2022-11-16 12:47:01,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6982 states and 8262 transitions. [2022-11-16 12:47:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-16 12:47:01,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:01,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:01,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:47:01,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 18373913, now seen corresponding path program 1 times [2022-11-16 12:47:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:01,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606018429] [2022-11-16 12:47:01,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-16 12:47:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:01,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606018429] [2022-11-16 12:47:01,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606018429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:01,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:01,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:01,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767936917] [2022-11-16 12:47:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:01,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:01,878 INFO L87 Difference]: Start difference. First operand 6982 states and 8262 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:04,604 INFO L93 Difference]: Finished difference Result 17788 states and 21273 transitions. [2022-11-16 12:47:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:04,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2022-11-16 12:47:04,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:04,640 INFO L225 Difference]: With dead ends: 17788 [2022-11-16 12:47:04,641 INFO L226 Difference]: Without dead ends: 9958 [2022-11-16 12:47:04,650 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 [2022-11-16 12:47:04,651 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:04,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 858 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:47:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9958 states. [2022-11-16 12:47:04,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9958 to 9958. [2022-11-16 12:47:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9958 states, 9957 states have (on average 1.1449231696294064) internal successors, (11400), 9957 states have internal predecessors, (11400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9958 states to 9958 states and 11400 transitions. [2022-11-16 12:47:04,847 INFO L78 Accepts]: Start accepts. Automaton has 9958 states and 11400 transitions. Word has length 273 [2022-11-16 12:47:04,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:04,848 INFO L495 AbstractCegarLoop]: Abstraction has 9958 states and 11400 transitions. [2022-11-16 12:47:04,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9958 states and 11400 transitions. [2022-11-16 12:47:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-16 12:47:04,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:04,855 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 12:47:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:47:04,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1552604812, now seen corresponding path program 1 times [2022-11-16 12:47:04,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523882038] [2022-11-16 12:47:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-16 12:47:05,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:05,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523882038] [2022-11-16 12:47:05,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523882038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:05,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:05,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:05,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086278980] [2022-11-16 12:47:05,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:05,133 INFO L87 Difference]: Start difference. First operand 9958 states and 11400 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:07,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:07,860 INFO L93 Difference]: Finished difference Result 24168 states and 28009 transitions. [2022-11-16 12:47:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 313 [2022-11-16 12:47:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:07,912 INFO L225 Difference]: With dead ends: 24168 [2022-11-16 12:47:07,913 INFO L226 Difference]: Without dead ends: 14212 [2022-11-16 12:47:07,923 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 [2022-11-16 12:47:07,924 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 447 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 371 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:47:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14212 states. [2022-11-16 12:47:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14212 to 13351. [2022-11-16 12:47:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13351 states, 13350 states have (on average 1.1481647940074906) internal successors, (15328), 13350 states have internal predecessors, (15328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13351 states to 13351 states and 15328 transitions. [2022-11-16 12:47:08,183 INFO L78 Accepts]: Start accepts. Automaton has 13351 states and 15328 transitions. Word has length 313 [2022-11-16 12:47:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:08,184 INFO L495 AbstractCegarLoop]: Abstraction has 13351 states and 15328 transitions. [2022-11-16 12:47:08,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 13351 states and 15328 transitions. [2022-11-16 12:47:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-11-16 12:47:08,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:08,196 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:47:08,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:08,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash 649706724, now seen corresponding path program 1 times [2022-11-16 12:47:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:08,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136521458] [2022-11-16 12:47:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:47:08,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:08,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136521458] [2022-11-16 12:47:08,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136521458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:08,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:08,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:08,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630691728] [2022-11-16 12:47:08,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:08,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:08,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:08,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:08,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:08,820 INFO L87 Difference]: Start difference. First operand 13351 states and 15328 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:12,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:12,685 INFO L93 Difference]: Finished difference Result 33117 states and 38117 transitions. [2022-11-16 12:47:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:47:12,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 380 [2022-11-16 12:47:12,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:12,721 INFO L225 Difference]: With dead ends: 33117 [2022-11-16 12:47:12,721 INFO L226 Difference]: Without dead ends: 19343 [2022-11-16 12:47:12,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:12,732 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 636 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 2806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:12,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 236 Invalid, 2806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2480 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 12:47:12,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19343 states. [2022-11-16 12:47:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19343 to 19339. [2022-11-16 12:47:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19339 states, 19338 states have (on average 1.1557555072913435) internal successors, (22350), 19338 states have internal predecessors, (22350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19339 states to 19339 states and 22350 transitions. [2022-11-16 12:47:13,004 INFO L78 Accepts]: Start accepts. Automaton has 19339 states and 22350 transitions. Word has length 380 [2022-11-16 12:47:13,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:13,005 INFO L495 AbstractCegarLoop]: Abstraction has 19339 states and 22350 transitions. [2022-11-16 12:47:13,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:13,006 INFO L276 IsEmpty]: Start isEmpty. Operand 19339 states and 22350 transitions. [2022-11-16 12:47:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-16 12:47:13,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:13,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:13,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:47:13,020 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:13,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2143535130, now seen corresponding path program 1 times [2022-11-16 12:47:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:13,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722603990] [2022-11-16 12:47:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:13,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 12:47:13,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722603990] [2022-11-16 12:47:13,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722603990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:13,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:13,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642989545] [2022-11-16 12:47:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:13,478 INFO L87 Difference]: Start difference. First operand 19339 states and 22350 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:16,331 INFO L93 Difference]: Finished difference Result 50180 states and 58000 transitions. [2022-11-16 12:47:16,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 402 [2022-11-16 12:47:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:16,388 INFO L225 Difference]: With dead ends: 50180 [2022-11-16 12:47:16,388 INFO L226 Difference]: Without dead ends: 30843 [2022-11-16 12:47:16,405 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 [2022-11-16 12:47:16,406 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 504 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:16,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 270 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:47:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30843 states. [2022-11-16 12:47:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30843 to 30824. [2022-11-16 12:47:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30824 states, 30823 states have (on average 1.141095934853843) internal successors, (35172), 30823 states have internal predecessors, (35172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30824 states to 30824 states and 35172 transitions. [2022-11-16 12:47:16,910 INFO L78 Accepts]: Start accepts. Automaton has 30824 states and 35172 transitions. Word has length 402 [2022-11-16 12:47:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:16,911 INFO L495 AbstractCegarLoop]: Abstraction has 30824 states and 35172 transitions. [2022-11-16 12:47:16,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 30824 states and 35172 transitions. [2022-11-16 12:47:17,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-16 12:47:17,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:17,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:17,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:47:17,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 376628203, now seen corresponding path program 1 times [2022-11-16 12:47:17,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:17,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552689166] [2022-11-16 12:47:17,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:17,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:17,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:17,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552689166] [2022-11-16 12:47:17,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552689166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:17,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645559932] [2022-11-16 12:47:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:17,947 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:47:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:18,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:47:18,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:19,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:47:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:19,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645559932] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:19,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:47:19,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-11-16 12:47:19,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735538919] [2022-11-16 12:47:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:19,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:19,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:47:19,935 INFO L87 Difference]: Start difference. First operand 30824 states and 35172 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:25,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:25,803 INFO L93 Difference]: Finished difference Result 88939 states and 101084 transitions. [2022-11-16 12:47:25,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:47:25,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 409 [2022-11-16 12:47:25,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:25,874 INFO L225 Difference]: With dead ends: 88939 [2022-11-16 12:47:25,875 INFO L226 Difference]: Without dead ends: 56413 [2022-11-16 12:47:25,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 813 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:47:25,897 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 770 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 2959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:25,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 195 Invalid, 2959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 12:47:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56413 states. [2022-11-16 12:47:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56413 to 52153. [2022-11-16 12:47:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52153 states, 52152 states have (on average 1.1363130848289615) internal successors, (59261), 52152 states have internal predecessors, (59261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52153 states to 52153 states and 59261 transitions. [2022-11-16 12:47:26,704 INFO L78 Accepts]: Start accepts. Automaton has 52153 states and 59261 transitions. Word has length 409 [2022-11-16 12:47:26,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:26,705 INFO L495 AbstractCegarLoop]: Abstraction has 52153 states and 59261 transitions. [2022-11-16 12:47:26,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:26,705 INFO L276 IsEmpty]: Start isEmpty. Operand 52153 states and 59261 transitions. [2022-11-16 12:47:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-16 12:47:26,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:26,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:26,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:47:26,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:47:26,930 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -899581652, now seen corresponding path program 1 times [2022-11-16 12:47:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829751392] [2022-11-16 12:47:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:26,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-16 12:47:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829751392] [2022-11-16 12:47:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829751392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:27,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:27,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049729311] [2022-11-16 12:47:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:27,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:27,295 INFO L87 Difference]: Start difference. First operand 52153 states and 59261 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:30,396 INFO L93 Difference]: Finished difference Result 118761 states and 135002 transitions. [2022-11-16 12:47:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:30,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 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 445 [2022-11-16 12:47:30,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:30,478 INFO L225 Difference]: With dead ends: 118761 [2022-11-16 12:47:30,479 INFO L226 Difference]: Without dead ends: 60215 [2022-11-16 12:47:30,510 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 [2022-11-16 12:47:30,510 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 498 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:30,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 748 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:47:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60215 states. [2022-11-16 12:47:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60215 to 60207. [2022-11-16 12:47:31,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60207 states, 60206 states have (on average 1.1200046506992658) internal successors, (67431), 60206 states have internal predecessors, (67431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60207 states to 60207 states and 67431 transitions. [2022-11-16 12:47:31,458 INFO L78 Accepts]: Start accepts. Automaton has 60207 states and 67431 transitions. Word has length 445 [2022-11-16 12:47:31,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:31,459 INFO L495 AbstractCegarLoop]: Abstraction has 60207 states and 67431 transitions. [2022-11-16 12:47:31,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:31,460 INFO L276 IsEmpty]: Start isEmpty. Operand 60207 states and 67431 transitions. [2022-11-16 12:47:31,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-16 12:47:31,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:31,479 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-16 12:47:31,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:47:31,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:31,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:31,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1845596096, now seen corresponding path program 1 times [2022-11-16 12:47:31,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:31,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626073190] [2022-11-16 12:47:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:32,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:32,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626073190] [2022-11-16 12:47:32,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626073190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:32,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:32,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:47:32,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220025641] [2022-11-16 12:47:32,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:32,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:32,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:32,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:33,000 INFO L87 Difference]: Start difference. First operand 60207 states and 67431 transitions. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:37,563 INFO L93 Difference]: Finished difference Result 157943 states and 176490 transitions. [2022-11-16 12:47:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:47:37,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 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 447 [2022-11-16 12:47:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:37,696 INFO L225 Difference]: With dead ends: 157943 [2022-11-16 12:47:37,696 INFO L226 Difference]: Without dead ends: 97738 [2022-11-16 12:47:37,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:37,739 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 769 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:37,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 181 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 12:47:38,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97738 states. [2022-11-16 12:47:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97738 to 93051. [2022-11-16 12:47:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93051 states, 93050 states have (on average 1.1130789897904352) internal successors, (103572), 93050 states have internal predecessors, (103572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93051 states to 93051 states and 103572 transitions. [2022-11-16 12:47:39,984 INFO L78 Accepts]: Start accepts. Automaton has 93051 states and 103572 transitions. Word has length 447 [2022-11-16 12:47:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 93051 states and 103572 transitions. [2022-11-16 12:47:39,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 93051 states and 103572 transitions. [2022-11-16 12:47:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-16 12:47:39,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:39,998 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:39,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:47:39,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:39,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1861468284, now seen corresponding path program 1 times [2022-11-16 12:47:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:40,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163149474] [2022-11-16 12:47:40,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:40,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-16 12:47:40,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:40,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163149474] [2022-11-16 12:47:40,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163149474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:40,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:40,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:47:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485642430] [2022-11-16 12:47:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:40,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:40,735 INFO L87 Difference]: Start difference. First operand 93051 states and 103572 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:45,179 INFO L93 Difference]: Finished difference Result 201070 states and 223016 transitions. [2022-11-16 12:47:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:47:45,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 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 449 [2022-11-16 12:47:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:45,308 INFO L225 Difference]: With dead ends: 201070 [2022-11-16 12:47:45,308 INFO L226 Difference]: Without dead ends: 108021 [2022-11-16 12:47:45,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:45,341 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 867 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2882 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 3044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:45,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 805 Invalid, 3044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2882 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 12:47:45,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108021 states. [2022-11-16 12:47:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108021 to 93051. [2022-11-16 12:47:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93051 states, 93050 states have (on average 1.112713594841483) internal successors, (103538), 93050 states have internal predecessors, (103538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93051 states to 93051 states and 103538 transitions. [2022-11-16 12:47:46,818 INFO L78 Accepts]: Start accepts. Automaton has 93051 states and 103538 transitions. Word has length 449 [2022-11-16 12:47:46,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:46,818 INFO L495 AbstractCegarLoop]: Abstraction has 93051 states and 103538 transitions. [2022-11-16 12:47:46,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 93051 states and 103538 transitions. [2022-11-16 12:47:46,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-16 12:47:46,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:46,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:46,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:47:46,832 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1200421190, now seen corresponding path program 1 times [2022-11-16 12:47:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:46,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710364660] [2022-11-16 12:47:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:46,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 12:47:48,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:48,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710364660] [2022-11-16 12:47:48,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710364660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:48,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:48,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:48,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982676094] [2022-11-16 12:47:48,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:48,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:48,004 INFO L87 Difference]: Start difference. First operand 93051 states and 103538 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:51,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:51,329 INFO L93 Difference]: Finished difference Result 193777 states and 215976 transitions. [2022-11-16 12:47:51,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:51,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 490 [2022-11-16 12:47:51,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:51,455 INFO L225 Difference]: With dead ends: 193777 [2022-11-16 12:47:51,455 INFO L226 Difference]: Without dead ends: 100298 [2022-11-16 12:47:51,492 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 [2022-11-16 12:47:51,492 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 336 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:51,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 796 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:47:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100298 states. [2022-11-16 12:47:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100298 to 96887. [2022-11-16 12:47:53,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96887 states, 96886 states have (on average 1.1097372169353674) internal successors, (107518), 96886 states have internal predecessors, (107518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96887 states to 96887 states and 107518 transitions. [2022-11-16 12:47:53,262 INFO L78 Accepts]: Start accepts. Automaton has 96887 states and 107518 transitions. Word has length 490 [2022-11-16 12:47:53,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:53,263 INFO L495 AbstractCegarLoop]: Abstraction has 96887 states and 107518 transitions. [2022-11-16 12:47:53,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 96887 states and 107518 transitions. [2022-11-16 12:47:53,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2022-11-16 12:47:53,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:53,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:53,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:47:53,274 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:53,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:53,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2036194230, now seen corresponding path program 1 times [2022-11-16 12:47:53,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:53,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009899254] [2022-11-16 12:47:53,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:53,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 307 proven. 82 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:47:54,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009899254] [2022-11-16 12:47:54,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009899254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:47:54,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529252486] [2022-11-16 12:47:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:54,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:47:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:54,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:47:54,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:47:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:55,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:47:55,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:47:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-16 12:47:56,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:47:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529252486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:56,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:47:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 12:47:56,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542388355] [2022-11-16 12:47:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:56,203 INFO L87 Difference]: Start difference. First operand 96887 states and 107518 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:56,624 INFO L93 Difference]: Finished difference Result 96967 states and 107599 transitions. [2022-11-16 12:47:56,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 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 503 [2022-11-16 12:47:56,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:56,755 INFO L225 Difference]: With dead ends: 96967 [2022-11-16 12:47:56,756 INFO L226 Difference]: Without dead ends: 96965 [2022-11-16 12:47:56,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:56,784 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 750 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:56,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 852 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 750 Unchecked, 0.0s Time] [2022-11-16 12:47:56,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96965 states. [2022-11-16 12:47:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96965 to 96965. [2022-11-16 12:47:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96965 states, 96964 states have (on average 1.1096489418753352) internal successors, (107596), 96964 states have internal predecessors, (107596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96965 states to 96965 states and 107596 transitions. [2022-11-16 12:47:58,559 INFO L78 Accepts]: Start accepts. Automaton has 96965 states and 107596 transitions. Word has length 503 [2022-11-16 12:47:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:58,560 INFO L495 AbstractCegarLoop]: Abstraction has 96965 states and 107596 transitions. [2022-11-16 12:47:58,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 96965 states and 107596 transitions. [2022-11-16 12:47:58,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2022-11-16 12:47:58,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:58,570 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:47:58,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:47:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_268e52c9-3400-452e-81ac-99c8d5f0b12c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:47:58,771 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash 272010830, now seen corresponding path program 1 times [2022-11-16 12:47:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524731303] [2022-11-16 12:47:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 12:47:59,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:59,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524731303] [2022-11-16 12:47:59,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524731303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:59,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:59,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:59,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748512546] [2022-11-16 12:47:59,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:59,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:59,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:59,438 INFO L87 Difference]: Start difference. First operand 96965 states and 107596 transitions. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:03,254 INFO L93 Difference]: Finished difference Result 207555 states and 230374 transitions. [2022-11-16 12:48:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:03,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 518 [2022-11-16 12:48:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:03,381 INFO L225 Difference]: With dead ends: 207555 [2022-11-16 12:48:03,381 INFO L226 Difference]: Without dead ends: 110592 [2022-11-16 12:48:03,425 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 [2022-11-16 12:48:03,426 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 330 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:03,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 399 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-16 12:48:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110592 states. [2022-11-16 12:48:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110592 to 102496. [2022-11-16 12:48:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102496 states, 102495 states have (on average 1.1090882482072295) internal successors, (113676), 102495 states have internal predecessors, (113676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102496 states to 102496 states and 113676 transitions. [2022-11-16 12:48:05,558 INFO L78 Accepts]: Start accepts. Automaton has 102496 states and 113676 transitions. Word has length 518 [2022-11-16 12:48:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:05,559 INFO L495 AbstractCegarLoop]: Abstraction has 102496 states and 113676 transitions. [2022-11-16 12:48:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 102496 states and 113676 transitions. [2022-11-16 12:48:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-16 12:48:05,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:05,576 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:48:05,577 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -229153588, now seen corresponding path program 1 times [2022-11-16 12:48:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:05,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671967358] [2022-11-16 12:48:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-16 12:48:06,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:06,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671967358] [2022-11-16 12:48:06,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671967358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:06,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:06,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116815248] [2022-11-16 12:48:06,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:06,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:06,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:06,599 INFO L87 Difference]: Start difference. First operand 102496 states and 113676 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:09,808 INFO L93 Difference]: Finished difference Result 213514 states and 236408 transitions. [2022-11-16 12:48:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 534 [2022-11-16 12:48:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:10,301 INFO L225 Difference]: With dead ends: 213514 [2022-11-16 12:48:10,302 INFO L226 Difference]: Without dead ends: 111020 [2022-11-16 12:48:10,340 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 [2022-11-16 12:48:10,343 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 404 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:10,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 388 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:48:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111020 states. [2022-11-16 12:48:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111020 to 102921. [2022-11-16 12:48:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102921 states, 102920 states have (on average 1.108890400310921) internal successors, (114127), 102920 states have internal predecessors, (114127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102921 states to 102921 states and 114127 transitions. [2022-11-16 12:48:11,918 INFO L78 Accepts]: Start accepts. Automaton has 102921 states and 114127 transitions. Word has length 534 [2022-11-16 12:48:11,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:11,919 INFO L495 AbstractCegarLoop]: Abstraction has 102921 states and 114127 transitions. [2022-11-16 12:48:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 102921 states and 114127 transitions. [2022-11-16 12:48:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2022-11-16 12:48:11,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:11,943 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:48:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:48:11,943 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1444719469, now seen corresponding path program 1 times [2022-11-16 12:48:11,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:11,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296256198] [2022-11-16 12:48:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:11,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:13,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1039 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2022-11-16 12:48:13,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:13,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296256198] [2022-11-16 12:48:13,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296256198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:13,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:13,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:13,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963963736] [2022-11-16 12:48:13,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:13,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:13,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:13,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:13,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:13,080 INFO L87 Difference]: Start difference. First operand 102921 states and 114127 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:16,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:16,708 INFO L93 Difference]: Finished difference Result 217770 states and 241027 transitions. [2022-11-16 12:48:16,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:16,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 581 [2022-11-16 12:48:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:16,834 INFO L225 Difference]: With dead ends: 217770 [2022-11-16 12:48:16,834 INFO L226 Difference]: Without dead ends: 114851 [2022-11-16 12:48:16,857 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 [2022-11-16 12:48:16,858 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 360 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:16,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 342 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 12:48:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114851 states. [2022-11-16 12:48:18,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114851 to 102071. [2022-11-16 12:48:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102071 states, 102070 states have (on average 1.1031742921524443) internal successors, (112601), 102070 states have internal predecessors, (112601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:18,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102071 states to 102071 states and 112601 transitions. [2022-11-16 12:48:18,315 INFO L78 Accepts]: Start accepts. Automaton has 102071 states and 112601 transitions. Word has length 581 [2022-11-16 12:48:18,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:18,315 INFO L495 AbstractCegarLoop]: Abstraction has 102071 states and 112601 transitions. [2022-11-16 12:48:18,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 102071 states and 112601 transitions. [2022-11-16 12:48:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2022-11-16 12:48:18,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:18,329 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:18,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:48:18,329 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:18,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:18,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1605899002, now seen corresponding path program 1 times [2022-11-16 12:48:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:18,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190556935] [2022-11-16 12:48:18,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:19,513 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 12:48:19,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:19,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190556935] [2022-11-16 12:48:19,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190556935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:19,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:19,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:19,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035458502] [2022-11-16 12:48:19,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:19,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:19,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:19,516 INFO L87 Difference]: Start difference. First operand 102071 states and 112601 transitions. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:23,240 INFO L93 Difference]: Finished difference Result 221601 states and 244565 transitions. [2022-11-16 12:48:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 607 [2022-11-16 12:48:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:23,356 INFO L225 Difference]: With dead ends: 221601 [2022-11-16 12:48:23,356 INFO L226 Difference]: Without dead ends: 118665 [2022-11-16 12:48:23,377 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 [2022-11-16 12:48:23,378 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 227 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:23,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 640 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 12:48:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118665 states. [2022-11-16 12:48:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118665 to 114790. [2022-11-16 12:48:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114790 states, 114789 states have (on average 1.096986645061809) internal successors, (125922), 114789 states have internal predecessors, (125922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114790 states to 114790 states and 125922 transitions. [2022-11-16 12:48:24,952 INFO L78 Accepts]: Start accepts. Automaton has 114790 states and 125922 transitions. Word has length 607 [2022-11-16 12:48:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 114790 states and 125922 transitions. [2022-11-16 12:48:24,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 114790 states and 125922 transitions. [2022-11-16 12:48:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2022-11-16 12:48:24,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:24,971 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:48:24,972 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:24,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1503528320, now seen corresponding path program 1 times [2022-11-16 12:48:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:24,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206265763] [2022-11-16 12:48:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:24,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-16 12:48:25,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:25,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206265763] [2022-11-16 12:48:25,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206265763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:25,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:25,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:25,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717880066] [2022-11-16 12:48:25,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:25,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:25,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:25,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:25,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:25,962 INFO L87 Difference]: Start difference. First operand 114790 states and 125922 transitions. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:29,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:29,603 INFO L93 Difference]: Finished difference Result 246184 states and 269636 transitions. [2022-11-16 12:48:29,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:29,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 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 631 [2022-11-16 12:48:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:29,749 INFO L225 Difference]: With dead ends: 246184 [2022-11-16 12:48:29,750 INFO L226 Difference]: Without dead ends: 125398 [2022-11-16 12:48:29,790 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 [2022-11-16 12:48:29,790 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 493 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:29,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 623 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:48:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125398 states.