./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e701321e196a1bccf6d27e73a1199a298c61ca16e14855140bb342fbe0d070d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:59:08,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:08,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:08,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:08,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:08,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:08,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:08,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:08,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:08,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:08,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:08,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:08,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:08,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:08,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:08,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:08,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:08,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:08,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:08,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:08,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:08,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:08,993 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:08,994 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:09,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:09,003 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:09,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:09,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:09,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:09,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:09,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:09,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:09,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:09,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:09,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:09,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:09,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:09,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:09,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:09,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:09,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:09,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:59:09,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:09,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:09,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:09,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:09,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:09,062 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:09,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:09,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:09,063 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:09,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:09,065 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:59:09,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:09,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:59:09,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:09,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:09,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:09,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:09,066 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:59:09,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:09,067 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:09,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:09,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:09,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:09,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:09,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:09,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:09,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:09,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:09,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:09,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:09,071 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:09,071 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:09,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:09,072 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_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e701321e196a1bccf6d27e73a1199a298c61ca16e14855140bb342fbe0d070d [2022-11-02 20:59:09,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:09,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:09,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:09,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:09,494 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:09,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c [2022-11-02 20:59:09,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/data/3576e8090/749ac04a846a4720afa842c447712057/FLAG12c8f7370 [2022-11-02 20:59:10,691 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:10,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c [2022-11-02 20:59:10,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/data/3576e8090/749ac04a846a4720afa842c447712057/FLAG12c8f7370 [2022-11-02 20:59:10,958 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/data/3576e8090/749ac04a846a4720afa842c447712057 [2022-11-02 20:59:10,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:10,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:10,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:10,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:10,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:10,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:10" (1/1) ... [2022-11-02 20:59:10,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0e398f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:10, skipping insertion in model container [2022-11-02 20:59:10,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:10" (1/1) ... [2022-11-02 20:59:10,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:11,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:13,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c[380593,380606] [2022-11-02 20:59:13,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c[383339,383352] [2022-11-02 20:59:14,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:14,070 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:15,351 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c[380593,380606] [2022-11-02 20:59:15,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/sv-benchmarks/c/combinations/Problem05_label49+token_ring.02.cil-1.c[383339,383352] [2022-11-02 20:59:15,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:15,497 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:15,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15 WrapperNode [2022-11-02 20:59:15,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:15,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:15,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:15,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:15,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:15,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,152 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12619 [2022-11-02 20:59:16,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:16,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:16,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:16,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:16,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:16,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:16,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:16,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:16,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (1/1) ... [2022-11-02 20:59:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:16,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:16,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:16,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-02 20:59:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-02 20:59:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-02 20:59:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-02 20:59:16,949 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:59:16,949 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:59:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-02 20:59:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-02 20:59:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-02 20:59:16,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-02 20:59:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:16,950 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-02 20:59:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-02 20:59:16,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:16,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:17,111 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:17,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:26,460 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:59:26,487 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:59:26,487 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:59:26,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:26 BoogieIcfgContainer [2022-11-02 20:59:26,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:59:26,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:59:26,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:59:26,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:59:26,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:10" (1/3) ... [2022-11-02 20:59:26,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce1b9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:26, skipping insertion in model container [2022-11-02 20:59:26,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:15" (2/3) ... [2022-11-02 20:59:26,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce1b9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:59:26, skipping insertion in model container [2022-11-02 20:59:26,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:59:26" (3/3) ... [2022-11-02 20:59:26,502 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.02.cil-1.c [2022-11-02 20:59:26,521 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:59:26,521 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:59:26,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:59:26,619 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;@16335287, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:59:26,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:59:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:59:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:26,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:26,648 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:26,649 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:26,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1170312139, now seen corresponding path program 1 times [2022-11-02 20:59:26,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:26,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720479758] [2022-11-02 20:59:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:26,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:27,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720479758] [2022-11-02 20:59:27,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720479758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:27,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:59:27,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936562722] [2022-11-02 20:59:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:27,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:59:27,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:59:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:59:27,306 INFO L87 Difference]: Start difference. First operand has 2315 states, 2290 states have (on average 1.8572052401746726) internal successors, (4253), 2293 states have internal predecessors, (4253), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:28,784 INFO L93 Difference]: Finished difference Result 4802 states and 8845 transitions. [2022-11-02 20:59:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:28,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:28,821 INFO L225 Difference]: With dead ends: 4802 [2022-11-02 20:59:28,822 INFO L226 Difference]: Without dead ends: 2427 [2022-11-02 20:59:28,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:59:28,836 INFO L413 NwaCegarLoop]: 4248 mSDtfsCounter, 4428 mSDsluCounter, 12428 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 16676 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:28,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4437 Valid, 16676 Invalid, 642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:59:28,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2022-11-02 20:59:28,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2364. [2022-11-02 20:59:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2322 states have (on average 1.8333333333333333) internal successors, (4257), 2325 states have internal predecessors, (4257), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-11-02 20:59:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 4314 transitions. [2022-11-02 20:59:29,020 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 4314 transitions. Word has length 68 [2022-11-02 20:59:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:29,021 INFO L495 AbstractCegarLoop]: Abstraction has 2364 states and 4314 transitions. [2022-11-02 20:59:29,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 4314 transitions. [2022-11-02 20:59:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:29,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:29,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:59:29,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1597321137, now seen corresponding path program 1 times [2022-11-02 20:59:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:29,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228153287] [2022-11-02 20:59:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:29,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:29,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:29,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228153287] [2022-11-02 20:59:29,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228153287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:29,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:29,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39401120] [2022-11-02 20:59:29,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:29,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:29,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:29,402 INFO L87 Difference]: Start difference. First operand 2364 states and 4314 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:30,745 INFO L93 Difference]: Finished difference Result 2807 states and 4974 transitions. [2022-11-02 20:59:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:30,758 INFO L225 Difference]: With dead ends: 2807 [2022-11-02 20:59:30,758 INFO L226 Difference]: Without dead ends: 2574 [2022-11-02 20:59:30,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:59:30,762 INFO L413 NwaCegarLoop]: 4246 mSDtfsCounter, 4351 mSDsluCounter, 16427 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 20673 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:30,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 20673 Invalid, 914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:59:30,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-02 20:59:30,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 2473. [2022-11-02 20:59:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2413 states have (on average 1.8188976377952757) internal successors, (4389), 2417 states have internal predecessors, (4389), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2022-11-02 20:59:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4470 transitions. [2022-11-02 20:59:30,844 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4470 transitions. Word has length 68 [2022-11-02 20:59:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:30,845 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4470 transitions. [2022-11-02 20:59:30,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4470 transitions. [2022-11-02 20:59:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:30,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:30,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:59:30,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -721302131, now seen corresponding path program 1 times [2022-11-02 20:59:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:30,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118354924] [2022-11-02 20:59:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:31,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118354924] [2022-11-02 20:59:31,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118354924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:31,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:31,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900625867] [2022-11-02 20:59:31,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:31,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:31,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:31,069 INFO L87 Difference]: Start difference. First operand 2473 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:32,246 INFO L93 Difference]: Finished difference Result 3193 states and 5538 transitions. [2022-11-02 20:59:32,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:32,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:32,260 INFO L225 Difference]: With dead ends: 3193 [2022-11-02 20:59:32,260 INFO L226 Difference]: Without dead ends: 2851 [2022-11-02 20:59:32,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:59:32,264 INFO L413 NwaCegarLoop]: 4169 mSDtfsCounter, 4383 mSDsluCounter, 16249 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 20418 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:32,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 20418 Invalid, 845 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:59:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2022-11-02 20:59:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2692. [2022-11-02 20:59:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2692 states, 2596 states have (on average 1.7927580893682589) internal successors, (4654), 2602 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-02 20:59:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2692 states to 2692 states and 4787 transitions. [2022-11-02 20:59:32,363 INFO L78 Accepts]: Start accepts. Automaton has 2692 states and 4787 transitions. Word has length 68 [2022-11-02 20:59:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:32,363 INFO L495 AbstractCegarLoop]: Abstraction has 2692 states and 4787 transitions. [2022-11-02 20:59:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2692 states and 4787 transitions. [2022-11-02 20:59:32,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:32,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:32,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:32,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:59:32,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash -277401457, now seen corresponding path program 1 times [2022-11-02 20:59:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:32,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886365525] [2022-11-02 20:59:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:32,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:32,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886365525] [2022-11-02 20:59:32,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886365525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:32,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:32,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517255316] [2022-11-02 20:59:32,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:32,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:32,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:32,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:32,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:32,576 INFO L87 Difference]: Start difference. First operand 2692 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:34,037 INFO L93 Difference]: Finished difference Result 4037 states and 6769 transitions. [2022-11-02 20:59:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:34,054 INFO L225 Difference]: With dead ends: 4037 [2022-11-02 20:59:34,054 INFO L226 Difference]: Without dead ends: 3476 [2022-11-02 20:59:34,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:59:34,059 INFO L413 NwaCegarLoop]: 4255 mSDtfsCounter, 4357 mSDsluCounter, 16416 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 20671 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:34,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 20671 Invalid, 997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:59:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-11-02 20:59:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 3104. [2022-11-02 20:59:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2940 states have (on average 1.7530612244897958) internal successors, (5154), 2950 states have internal predecessors, (5154), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2022-11-02 20:59:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 5389 transitions. [2022-11-02 20:59:34,237 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 5389 transitions. Word has length 68 [2022-11-02 20:59:34,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:34,238 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 5389 transitions. [2022-11-02 20:59:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 5389 transitions. [2022-11-02 20:59:34,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:34,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:34,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:59:34,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:34,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1988979729, now seen corresponding path program 1 times [2022-11-02 20:59:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:34,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113916052] [2022-11-02 20:59:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113916052] [2022-11-02 20:59:34,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113916052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:34,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:34,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:59:34,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960169109] [2022-11-02 20:59:34,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:34,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:59:34,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:34,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:59:34,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:59:34,423 INFO L87 Difference]: Start difference. First operand 3104 states and 5389 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:35,766 INFO L93 Difference]: Finished difference Result 5435 states and 8809 transitions. [2022-11-02 20:59:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:59:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:35,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:35,791 INFO L225 Difference]: With dead ends: 5435 [2022-11-02 20:59:35,791 INFO L226 Difference]: Without dead ends: 4462 [2022-11-02 20:59:35,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:59:35,799 INFO L413 NwaCegarLoop]: 4224 mSDtfsCounter, 4362 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4374 SdHoareTripleChecker+Valid, 20643 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4374 Valid, 20643 Invalid, 889 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:59:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2022-11-02 20:59:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 3941. [2022-11-02 20:59:36,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3941 states, 3645 states have (on average 1.696570644718793) internal successors, (6184), 3663 states have internal predecessors, (6184), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2022-11-02 20:59:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3941 states to 3941 states and 6633 transitions. [2022-11-02 20:59:36,105 INFO L78 Accepts]: Start accepts. Automaton has 3941 states and 6633 transitions. Word has length 68 [2022-11-02 20:59:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:36,106 INFO L495 AbstractCegarLoop]: Abstraction has 3941 states and 6633 transitions. [2022-11-02 20:59:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3941 states and 6633 transitions. [2022-11-02 20:59:36,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 20:59:36,110 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:36,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:59:36,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899471, now seen corresponding path program 1 times [2022-11-02 20:59:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206443810] [2022-11-02 20:59:36,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:36,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:36,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206443810] [2022-11-02 20:59:36,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206443810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:36,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:36,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:59:36,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486959365] [2022-11-02 20:59:36,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:36,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:59:36,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:36,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:59:36,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:59:36,241 INFO L87 Difference]: Start difference. First operand 3941 states and 6633 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:37,661 INFO L93 Difference]: Finished difference Result 7278 states and 11576 transitions. [2022-11-02 20:59:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:59:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2022-11-02 20:59:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:37,689 INFO L225 Difference]: With dead ends: 7278 [2022-11-02 20:59:37,689 INFO L226 Difference]: Without dead ends: 5469 [2022-11-02 20:59:37,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:37,699 INFO L413 NwaCegarLoop]: 4300 mSDtfsCounter, 4485 mSDsluCounter, 12242 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 16542 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:37,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 16542 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:59:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2022-11-02 20:59:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4882. [2022-11-02 20:59:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4882 states, 4428 states have (on average 1.6456639566395663) internal successors, (7287), 4463 states have internal predecessors, (7287), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2022-11-02 20:59:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4882 states to 4882 states and 7956 transitions. [2022-11-02 20:59:37,984 INFO L78 Accepts]: Start accepts. Automaton has 4882 states and 7956 transitions. Word has length 68 [2022-11-02 20:59:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:37,985 INFO L495 AbstractCegarLoop]: Abstraction has 4882 states and 7956 transitions. [2022-11-02 20:59:37,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:59:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4882 states and 7956 transitions. [2022-11-02 20:59:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:59:37,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:37,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:37,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:59:37,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:37,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:37,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1262348608, now seen corresponding path program 1 times [2022-11-02 20:59:37,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:37,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413147929] [2022-11-02 20:59:37,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:37,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:59:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:59:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:59:38,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413147929] [2022-11-02 20:59:38,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413147929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077898217] [2022-11-02 20:59:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:38,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:38,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:38,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:38,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:59:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:38,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:59:38,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:38,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077898217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:38,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:38,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 20:59:38,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529009911] [2022-11-02 20:59:38,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:38,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:38,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:38,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:38,533 INFO L87 Difference]: Start difference. First operand 4882 states and 7956 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:59:38,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:38,906 INFO L93 Difference]: Finished difference Result 10239 states and 15790 transitions. [2022-11-02 20:59:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:38,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-11-02 20:59:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:38,945 INFO L225 Difference]: With dead ends: 10239 [2022-11-02 20:59:38,945 INFO L226 Difference]: Without dead ends: 7489 [2022-11-02 20:59:38,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:38,957 INFO L413 NwaCegarLoop]: 4150 mSDtfsCounter, 4098 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:38,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:38,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-11-02 20:59:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7435. [2022-11-02 20:59:39,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7435 states, 6567 states have (on average 1.5784985533729252) internal successors, (10366), 6635 states have internal predecessors, (10366), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2022-11-02 20:59:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7435 states to 7435 states and 11621 transitions. [2022-11-02 20:59:39,410 INFO L78 Accepts]: Start accepts. Automaton has 7435 states and 11621 transitions. Word has length 110 [2022-11-02 20:59:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 7435 states and 11621 transitions. [2022-11-02 20:59:39,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:59:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7435 states and 11621 transitions. [2022-11-02 20:59:39,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:59:39,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:39,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:39,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:39,643 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1095009120, now seen corresponding path program 1 times [2022-11-02 20:59:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:39,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668426701] [2022-11-02 20:59:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:59:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:59:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 20:59:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668426701] [2022-11-02 20:59:39,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668426701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:39,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815772544] [2022-11-02 20:59:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:39,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:39,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:39,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:59:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:39,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:59:40,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:40,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815772544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:40,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:40,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 20:59:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773843076] [2022-11-02 20:59:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:40,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:40,041 INFO L87 Difference]: Start difference. First operand 7435 states and 11621 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:59:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:40,877 INFO L93 Difference]: Finished difference Result 17751 states and 26795 transitions. [2022-11-02 20:59:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:40,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-11-02 20:59:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:40,954 INFO L225 Difference]: With dead ends: 17751 [2022-11-02 20:59:40,954 INFO L226 Difference]: Without dead ends: 12449 [2022-11-02 20:59:40,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:40,974 INFO L413 NwaCegarLoop]: 4299 mSDtfsCounter, 154 mSDsluCounter, 4138 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:40,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 8437 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:40,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-11-02 20:59:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12449. [2022-11-02 20:59:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12449 states, 10768 states have (on average 1.5169947994056463) internal successors, (16335), 10885 states have internal predecessors, (16335), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2022-11-02 20:59:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 18906 transitions. [2022-11-02 20:59:41,877 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 18906 transitions. Word has length 110 [2022-11-02 20:59:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:41,878 INFO L495 AbstractCegarLoop]: Abstraction has 12449 states and 18906 transitions. [2022-11-02 20:59:41,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 20:59:41,879 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 18906 transitions. [2022-11-02 20:59:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 20:59:41,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:41,914 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:41,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:42,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:42,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1627368555, now seen corresponding path program 1 times [2022-11-02 20:59:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:42,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949881215] [2022-11-02 20:59:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-02 20:59:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:59:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-02 20:59:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:59:42,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:42,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949881215] [2022-11-02 20:59:42,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949881215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:42,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842760379] [2022-11-02 20:59:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:42,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:42,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:42,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:42,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:59:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:42,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:42,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-02 20:59:42,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:42,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842760379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:42,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:42,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-02 20:59:42,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767502670] [2022-11-02 20:59:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:42,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:42,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:42,654 INFO L87 Difference]: Start difference. First operand 12449 states and 18906 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:59:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:43,923 INFO L93 Difference]: Finished difference Result 32641 states and 48463 transitions. [2022-11-02 20:59:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-11-02 20:59:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:44,041 INFO L225 Difference]: With dead ends: 32641 [2022-11-02 20:59:44,041 INFO L226 Difference]: Without dead ends: 22329 [2022-11-02 20:59:44,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:44,088 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4056 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4056 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:44,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4056 Valid, 4318 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22329 states. [2022-11-02 20:59:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22329 to 22119. [2022-11-02 20:59:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22119 states, 18858 states have (on average 1.4761374482978047) internal successors, (27837), 19089 states have internal predecessors, (27837), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2022-11-02 20:59:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22119 states to 22119 states and 32744 transitions. [2022-11-02 20:59:45,992 INFO L78 Accepts]: Start accepts. Automaton has 22119 states and 32744 transitions. Word has length 142 [2022-11-02 20:59:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:45,993 INFO L495 AbstractCegarLoop]: Abstraction has 22119 states and 32744 transitions. [2022-11-02 20:59:45,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-02 20:59:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 22119 states and 32744 transitions. [2022-11-02 20:59:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-02 20:59:46,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:46,058 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, 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] [2022-11-02 20:59:46,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:46,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:46,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2072719309, now seen corresponding path program 1 times [2022-11-02 20:59:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:46,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38822846] [2022-11-02 20:59:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:59:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:59:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:59:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:59:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 20:59:46,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:46,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38822846] [2022-11-02 20:59:46,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38822846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:46,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285935078] [2022-11-02 20:59:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:46,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:46,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:46,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:46,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:59:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:46,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:59:46,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:59:46,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:46,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285935078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:46,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:46,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 20:59:46,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833528980] [2022-11-02 20:59:46,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:46,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:46,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:46,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:46,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:46,960 INFO L87 Difference]: Start difference. First operand 22119 states and 32744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:59:48,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:48,637 INFO L93 Difference]: Finished difference Result 44457 states and 65784 transitions. [2022-11-02 20:59:48,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:48,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-11-02 20:59:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:48,769 INFO L225 Difference]: With dead ends: 44457 [2022-11-02 20:59:48,769 INFO L226 Difference]: Without dead ends: 24473 [2022-11-02 20:59:48,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:48,839 INFO L413 NwaCegarLoop]: 4137 mSDtfsCounter, 4075 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:48,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 4171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24473 states. [2022-11-02 20:59:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24473 to 24473. [2022-11-02 20:59:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24473 states, 21000 states have (on average 1.4191904761904761) internal successors, (29803), 21231 states have internal predecessors, (29803), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 1548 states have return successors, (3106), 1917 states have call predecessors, (3106), 1923 states have call successors, (3106) [2022-11-02 20:59:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24473 states to 24473 states and 34832 transitions. [2022-11-02 20:59:50,549 INFO L78 Accepts]: Start accepts. Automaton has 24473 states and 34832 transitions. Word has length 159 [2022-11-02 20:59:50,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:50,550 INFO L495 AbstractCegarLoop]: Abstraction has 24473 states and 34832 transitions. [2022-11-02 20:59:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 20:59:50,551 INFO L276 IsEmpty]: Start isEmpty. Operand 24473 states and 34832 transitions. [2022-11-02 20:59:50,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-02 20:59:50,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:50,616 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, 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] [2022-11-02 20:59:50,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:59:50,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash -830749066, now seen corresponding path program 1 times [2022-11-02 20:59:50,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:50,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896770075] [2022-11-02 20:59:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:50,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 20:59:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 20:59:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:59:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-02 20:59:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-02 20:59:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896770075] [2022-11-02 20:59:51,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896770075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125333256] [2022-11-02 20:59:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:51,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:51,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:59:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:51,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:51,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:59:51,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:51,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125333256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:51,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:51,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 20:59:51,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891672160] [2022-11-02 20:59:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:51,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:51,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:51,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:51,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:51,327 INFO L87 Difference]: Start difference. First operand 24473 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:59:53,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:53,295 INFO L93 Difference]: Finished difference Result 41324 states and 58008 transitions. [2022-11-02 20:59:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 159 [2022-11-02 20:59:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:53,393 INFO L225 Difference]: With dead ends: 41324 [2022-11-02 20:59:53,394 INFO L226 Difference]: Without dead ends: 26013 [2022-11-02 20:59:53,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:53,430 INFO L413 NwaCegarLoop]: 4159 mSDtfsCounter, 4088 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:53,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4325 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26013 states. [2022-11-02 20:59:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26013 to 25873. [2022-11-02 20:59:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25873 states, 22288 states have (on average 1.3940685570710696) internal successors, (31071), 22519 states have internal predecessors, (31071), 1943 states have call successors, (1943), 1448 states have call predecessors, (1943), 1640 states have return successors, (3218), 1937 states have call predecessors, (3218), 1943 states have call successors, (3218) [2022-11-02 20:59:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25873 states to 25873 states and 36232 transitions. [2022-11-02 20:59:55,249 INFO L78 Accepts]: Start accepts. Automaton has 25873 states and 36232 transitions. Word has length 159 [2022-11-02 20:59:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:55,250 INFO L495 AbstractCegarLoop]: Abstraction has 25873 states and 36232 transitions. [2022-11-02 20:59:55,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:59:55,250 INFO L276 IsEmpty]: Start isEmpty. Operand 25873 states and 36232 transitions. [2022-11-02 20:59:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 20:59:55,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:55,317 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, 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] [2022-11-02 20:59:55,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:55,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:55,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -609804947, now seen corresponding path program 1 times [2022-11-02 20:59:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:55,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713591574] [2022-11-02 20:59:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:59:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 20:59:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:59:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 20:59:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 20:59:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:59:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:59:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 20:59:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 20:59:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-02 20:59:55,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:55,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713591574] [2022-11-02 20:59:55,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713591574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:55,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757016963] [2022-11-02 20:59:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:55,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:55,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:55,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:55,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:59:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:56,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:59:56,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 20:59:56,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:56,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757016963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:56,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:56,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 20:59:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986198319] [2022-11-02 20:59:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:56,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:59:56,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:56,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:59:56,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:56,173 INFO L87 Difference]: Start difference. First operand 25873 states and 36232 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 20:59:59,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:59,124 INFO L93 Difference]: Finished difference Result 70245 states and 97750 transitions. [2022-11-02 20:59:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:59:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-02 20:59:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:59,341 INFO L225 Difference]: With dead ends: 70245 [2022-11-02 20:59:59,341 INFO L226 Difference]: Without dead ends: 46511 [2022-11-02 20:59:59,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:59:59,409 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 4102 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:59,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4334 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:59:59,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46511 states. [2022-11-02 21:00:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46511 to 45781. [2022-11-02 21:00:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45781 states, 39030 states have (on average 1.3636945939021266) internal successors, (53225), 39491 states have internal predecessors, (53225), 3677 states have call successors, (3677), 2688 states have call predecessors, (3677), 3072 states have return successors, (7178), 3665 states have call predecessors, (7178), 3677 states have call successors, (7178) [2022-11-02 21:00:03,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45781 states to 45781 states and 64080 transitions. [2022-11-02 21:00:03,306 INFO L78 Accepts]: Start accepts. Automaton has 45781 states and 64080 transitions. Word has length 160 [2022-11-02 21:00:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:03,307 INFO L495 AbstractCegarLoop]: Abstraction has 45781 states and 64080 transitions. [2022-11-02 21:00:03,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 21:00:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 45781 states and 64080 transitions. [2022-11-02 21:00:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:00:03,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:03,454 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, 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] [2022-11-02 21:00:03,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:03,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash -757749610, now seen corresponding path program 1 times [2022-11-02 21:00:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:03,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880920814] [2022-11-02 21:00:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:03,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:00:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:00:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 21:00:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:00:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 21:00:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:00:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:00:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 21:00:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 21:00:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 21:00:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:00:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-02 21:00:03,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880920814] [2022-11-02 21:00:03,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880920814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352072424] [2022-11-02 21:00:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:03,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:03,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:03,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:00:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:04,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:00:04,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 21:00:04,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:04,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352072424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:04,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:04,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 21:00:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556438889] [2022-11-02 21:00:04,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:04,184 INFO L87 Difference]: Start difference. First operand 45781 states and 64080 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 21:00:07,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:07,261 INFO L93 Difference]: Finished difference Result 75161 states and 105873 transitions. [2022-11-02 21:00:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 160 [2022-11-02 21:00:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:07,397 INFO L225 Difference]: With dead ends: 75161 [2022-11-02 21:00:07,397 INFO L226 Difference]: Without dead ends: 40527 [2022-11-02 21:00:07,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:07,492 INFO L413 NwaCegarLoop]: 4136 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:07,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40527 states. [2022-11-02 21:00:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40527 to 29943. [2022-11-02 21:00:10,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29943 states, 25784 states have (on average 1.3390862550418865) internal successors, (34527), 26025 states have internal predecessors, (34527), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3934), 2229 states have call predecessors, (3934), 2245 states have call successors, (3934) [2022-11-02 21:00:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29943 states to 29943 states and 40706 transitions. [2022-11-02 21:00:10,317 INFO L78 Accepts]: Start accepts. Automaton has 29943 states and 40706 transitions. Word has length 160 [2022-11-02 21:00:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:10,317 INFO L495 AbstractCegarLoop]: Abstraction has 29943 states and 40706 transitions. [2022-11-02 21:00:10,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-02 21:00:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29943 states and 40706 transitions. [2022-11-02 21:00:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-02 21:00:10,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:10,373 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, 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] [2022-11-02 21:00:10,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:00:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 21:00:10,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1793650834, now seen corresponding path program 1 times [2022-11-02 21:00:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:10,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758516677] [2022-11-02 21:00:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:00:10,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:00:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 21:00:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 21:00:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-02 21:00:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-02 21:00:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 21:00:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 21:00:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 21:00:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-02 21:00:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-02 21:00:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-02 21:00:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758516677] [2022-11-02 21:00:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758516677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:00:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45853370] [2022-11-02 21:00:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:10,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:00:10,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:10,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:00:10,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85a14b4e-b3f9-4ab5-9267-be3385c5ff7d/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:00:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:10,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:00:10,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:00:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-02 21:00:10,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:00:10,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45853370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:10,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:00:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-02 21:00:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401899323] [2022-11-02 21:00:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:00:10,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:00:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:10,966 INFO L87 Difference]: Start difference. First operand 29943 states and 40706 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-02 21:00:15,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:15,474 INFO L93 Difference]: Finished difference Result 82801 states and 112154 transitions. [2022-11-02 21:00:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:00:15,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-11-02 21:00:15,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:15,640 INFO L225 Difference]: With dead ends: 82801 [2022-11-02 21:00:15,640 INFO L226 Difference]: Without dead ends: 55005 [2022-11-02 21:00:15,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:15,694 INFO L413 NwaCegarLoop]: 4180 mSDtfsCounter, 4098 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:15,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4098 Valid, 4341 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:00:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55005 states.