./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label40.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label40.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ --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 f8fd8a7f4bc5b8a783328ea3ccb02a1c89ebaa08f4ab2de173aa0152f6877b7b --- 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-dbf71c6-m [2022-10-17 10:22:55,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:22:55,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:22:55,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:22:55,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:22:55,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:22:55,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:22:55,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:22:55,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:22:55,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:22:55,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:22:55,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:22:55,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:22:55,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:22:55,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:22:55,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:22:55,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:22:55,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:22:55,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:22:55,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:22:55,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:22:55,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:22:55,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:22:55,306 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:22:55,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:22:55,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:22:55,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:22:55,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:22:55,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:22:55,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:22:55,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:22:55,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:22:55,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:22:55,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:22:55,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:22:55,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:22:55,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:22:55,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:22:55,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:22:55,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:22:55,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:22:55,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:22:55,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:22:55,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:22:55,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:22:55,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:22:55,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:22:55,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:22:55,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:22:55,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:22:55,390 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:22:55,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:22:55,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:22:55,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:22:55,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:22:55,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:22:55,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:22:55,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:22:55,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:22:55,394 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:22:55,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:22:55,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:22:55,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:22:55,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:22:55,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:22:55,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:22:55,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:55,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:22:55,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:22:55,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:22:55,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:22:55,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:22:55,399 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:22:55,399 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:22:55,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:22:55,400 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_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8fd8a7f4bc5b8a783328ea3ccb02a1c89ebaa08f4ab2de173aa0152f6877b7b [2022-10-17 10:22:55,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:22:55,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:22:55,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:22:55,857 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:22:55,858 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:22:55,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/eca-rers2012/Problem11_label40.c [2022-10-17 10:22:55,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/data/f7cc79b59/f6ceeac952694a3797e7a8e3a37b9afc/FLAG615e4a744 [2022-10-17 10:22:56,586 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:22:56,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/sv-benchmarks/c/eca-rers2012/Problem11_label40.c [2022-10-17 10:22:56,611 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/data/f7cc79b59/f6ceeac952694a3797e7a8e3a37b9afc/FLAG615e4a744 [2022-10-17 10:22:56,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/data/f7cc79b59/f6ceeac952694a3797e7a8e3a37b9afc [2022-10-17 10:22:56,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:22:56,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:22:56,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:56,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:22:56,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:22:56,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:56" (1/1) ... [2022-10-17 10:22:56,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795a999d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:56, skipping insertion in model container [2022-10-17 10:22:56,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:22:56" (1/1) ... [2022-10-17 10:22:56,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:22:56,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:22:57,237 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_f3655c30-d0bf-4cbb-8dfb-636156729568/sv-benchmarks/c/eca-rers2012/Problem11_label40.c[6409,6422] [2022-10-17 10:22:57,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:57,617 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:22:57,655 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_f3655c30-d0bf-4cbb-8dfb-636156729568/sv-benchmarks/c/eca-rers2012/Problem11_label40.c[6409,6422] [2022-10-17 10:22:57,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:22:57,794 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:22:57,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57 WrapperNode [2022-10-17 10:22:57,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:22:57,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:57,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:22:57,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:22:57,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:57,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:57,954 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2022-10-17 10:22:57,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:22:57,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:22:57,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:22:57,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:22:57,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:57,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,152 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:22:58,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:22:58,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:22:58,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:22:58,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (1/1) ... [2022-10-17 10:22:58,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:22:58,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:22:58,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:22:58,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:22:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:22:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:22:58,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:22:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:22:58,360 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:22:58,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:23:00,351 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:23:00,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:23:00,373 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:23:00,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:00 BoogieIcfgContainer [2022-10-17 10:23:00,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:23:00,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:23:00,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:23:00,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:23:00,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:22:56" (1/3) ... [2022-10-17 10:23:00,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342fada8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:23:00, skipping insertion in model container [2022-10-17 10:23:00,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:22:57" (2/3) ... [2022-10-17 10:23:00,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342fada8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:23:00, skipping insertion in model container [2022-10-17 10:23:00,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:23:00" (3/3) ... [2022-10-17 10:23:00,388 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label40.c [2022-10-17 10:23:00,412 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:23:00,412 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:23:00,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:23:00,487 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;@7182f1ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:23:00,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:23:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:00,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:23:00,505 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:00,506 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] [2022-10-17 10:23:00,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 626000386, now seen corresponding path program 1 times [2022-10-17 10:23:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484226830] [2022-10-17 10:23:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484226830] [2022-10-17 10:23:01,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484226830] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:01,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:01,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:23:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302450637] [2022-10-17 10:23:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:01,063 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:02,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:02,430 INFO L93 Difference]: Finished difference Result 761 states and 1345 transitions. [2022-10-17 10:23:02,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:02,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-10-17 10:23:02,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:02,448 INFO L225 Difference]: With dead ends: 761 [2022-10-17 10:23:02,448 INFO L226 Difference]: Without dead ends: 413 [2022-10-17 10:23:02,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:02,457 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 184 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 222 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-17 10:23:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-10-17 10:23:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-10-17 10:23:02,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.453883495145631) internal successors, (599), 412 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 599 transitions. [2022-10-17 10:23:02,533 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 599 transitions. Word has length 44 [2022-10-17 10:23:02,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:02,534 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 599 transitions. [2022-10-17 10:23:02,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:02,534 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 599 transitions. [2022-10-17 10:23:02,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-17 10:23:02,540 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:02,540 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:02,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:23:02,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:02,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:02,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1200539258, now seen corresponding path program 1 times [2022-10-17 10:23:02,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:02,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637384229] [2022-10-17 10:23:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:02,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:02,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637384229] [2022-10-17 10:23:02,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637384229] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:02,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:02,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:23:02,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237997614] [2022-10-17 10:23:02,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:02,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:02,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:02,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:02,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:02,896 INFO L87 Difference]: Start difference. First operand 413 states and 599 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:03,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:03,849 INFO L93 Difference]: Finished difference Result 1211 states and 1763 transitions. [2022-10-17 10:23:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:03,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-10-17 10:23:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:03,862 INFO L225 Difference]: With dead ends: 1211 [2022-10-17 10:23:03,862 INFO L226 Difference]: Without dead ends: 800 [2022-10-17 10:23:03,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:03,866 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 144 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:03,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 118 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:23:03,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-10-17 10:23:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2022-10-17 10:23:03,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 788 states have (on average 1.3756345177664975) internal successors, (1084), 788 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1084 transitions. [2022-10-17 10:23:03,911 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1084 transitions. Word has length 112 [2022-10-17 10:23:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:03,911 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 1084 transitions. [2022-10-17 10:23:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1084 transitions. [2022-10-17 10:23:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-17 10:23:03,917 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:03,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-10-17 10:23:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:23:03,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -590739588, now seen corresponding path program 1 times [2022-10-17 10:23:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814331938] [2022-10-17 10:23:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:04,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:04,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:04,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814331938] [2022-10-17 10:23:04,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814331938] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:04,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:04,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:23:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919164831] [2022-10-17 10:23:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:04,459 INFO L87 Difference]: Start difference. First operand 789 states and 1084 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:05,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:05,462 INFO L93 Difference]: Finished difference Result 1945 states and 2614 transitions. [2022-10-17 10:23:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:05,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-10-17 10:23:05,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:05,473 INFO L225 Difference]: With dead ends: 1945 [2022-10-17 10:23:05,473 INFO L226 Difference]: Without dead ends: 1158 [2022-10-17 10:23:05,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:05,479 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 120 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:05,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 190 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:23:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2022-10-17 10:23:05,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1157. [2022-10-17 10:23:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1156 states have (on average 1.2716262975778547) internal successors, (1470), 1156 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1470 transitions. [2022-10-17 10:23:05,515 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1470 transitions. Word has length 113 [2022-10-17 10:23:05,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:05,516 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1470 transitions. [2022-10-17 10:23:05,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:05,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1470 transitions. [2022-10-17 10:23:05,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-10-17 10:23:05,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:05,534 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:23:05,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:05,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1199532265, now seen corresponding path program 1 times [2022-10-17 10:23:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:05,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143539266] [2022-10-17 10:23:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:05,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143539266] [2022-10-17 10:23:05,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143539266] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:05,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:05,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463707102] [2022-10-17 10:23:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:23:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:23:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:23:05,914 INFO L87 Difference]: Start difference. First operand 1157 states and 1470 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:07,527 INFO L93 Difference]: Finished difference Result 3445 states and 4568 transitions. [2022-10-17 10:23:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:23:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-10-17 10:23:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:07,542 INFO L225 Difference]: With dead ends: 3445 [2022-10-17 10:23:07,542 INFO L226 Difference]: Without dead ends: 2474 [2022-10-17 10:23:07,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:23:07,546 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 320 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:07,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 95 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-17 10:23:07,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-10-17 10:23:07,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2473. [2022-10-17 10:23:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2472 states have (on average 1.287621359223301) internal successors, (3183), 2472 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3183 transitions. [2022-10-17 10:23:07,610 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3183 transitions. Word has length 171 [2022-10-17 10:23:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:07,611 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 3183 transitions. [2022-10-17 10:23:07,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3183 transitions. [2022-10-17 10:23:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-10-17 10:23:07,616 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:07,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:07,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:23:07,617 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -362773066, now seen corresponding path program 1 times [2022-10-17 10:23:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:07,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701482601] [2022-10-17 10:23:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:23:07,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701482601] [2022-10-17 10:23:07,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701482601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:07,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:07,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767794282] [2022-10-17 10:23:07,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:07,931 INFO L87 Difference]: Start difference. First operand 2473 states and 3183 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:09,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:09,061 INFO L93 Difference]: Finished difference Result 5695 states and 7520 transitions. [2022-10-17 10:23:09,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:09,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 224 [2022-10-17 10:23:09,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:09,087 INFO L225 Difference]: With dead ends: 5695 [2022-10-17 10:23:09,087 INFO L226 Difference]: Without dead ends: 3592 [2022-10-17 10:23:09,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:09,094 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 136 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:09,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 347 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:23:09,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2022-10-17 10:23:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 3579. [2022-10-17 10:23:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 3578 states have (on average 1.252375628842929) internal successors, (4481), 3578 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:09,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4481 transitions. [2022-10-17 10:23:09,199 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4481 transitions. Word has length 224 [2022-10-17 10:23:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:09,201 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 4481 transitions. [2022-10-17 10:23:09,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4481 transitions. [2022-10-17 10:23:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-10-17 10:23:09,212 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:09,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:09,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:23:09,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:09,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1808781376, now seen corresponding path program 1 times [2022-10-17 10:23:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:09,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175834800] [2022-10-17 10:23:09,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:09,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:09,626 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-10-17 10:23:09,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:09,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175834800] [2022-10-17 10:23:09,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175834800] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:09,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:09,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:09,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647222008] [2022-10-17 10:23:09,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:09,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:09,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:09,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:09,630 INFO L87 Difference]: Start difference. First operand 3579 states and 4481 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:10,555 INFO L93 Difference]: Finished difference Result 7726 states and 9781 transitions. [2022-10-17 10:23:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:10,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2022-10-17 10:23:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:10,583 INFO L225 Difference]: With dead ends: 7726 [2022-10-17 10:23:10,583 INFO L226 Difference]: Without dead ends: 4517 [2022-10-17 10:23:10,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:10,591 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 158 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:10,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 346 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:23:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2022-10-17 10:23:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4499. [2022-10-17 10:23:10,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 4498 states have (on average 1.240773677189862) internal successors, (5581), 4498 states have internal predecessors, (5581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5581 transitions. [2022-10-17 10:23:10,715 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5581 transitions. Word has length 225 [2022-10-17 10:23:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:10,716 INFO L495 AbstractCegarLoop]: Abstraction has 4499 states and 5581 transitions. [2022-10-17 10:23:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5581 transitions. [2022-10-17 10:23:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-10-17 10:23:10,720 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:10,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:10,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:23:10,721 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:10,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash -218901039, now seen corresponding path program 1 times [2022-10-17 10:23:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:10,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197429157] [2022-10-17 10:23:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:10,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-17 10:23:11,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:11,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197429157] [2022-10-17 10:23:11,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197429157] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:11,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:11,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912299830] [2022-10-17 10:23:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:11,126 INFO L87 Difference]: Start difference. First operand 4499 states and 5581 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:12,238 INFO L93 Difference]: Finished difference Result 9741 states and 12305 transitions. [2022-10-17 10:23:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:12,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2022-10-17 10:23:12,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:12,273 INFO L225 Difference]: With dead ends: 9741 [2022-10-17 10:23:12,273 INFO L226 Difference]: Without dead ends: 5612 [2022-10-17 10:23:12,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:12,282 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 153 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:12,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 371 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:23:12,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5612 states. [2022-10-17 10:23:12,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5612 to 5419. [2022-10-17 10:23:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 1.2331118493909192) internal successors, (6681), 5418 states have internal predecessors, (6681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6681 transitions. [2022-10-17 10:23:12,420 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6681 transitions. Word has length 226 [2022-10-17 10:23:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:12,421 INFO L495 AbstractCegarLoop]: Abstraction has 5419 states and 6681 transitions. [2022-10-17 10:23:12,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6681 transitions. [2022-10-17 10:23:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-10-17 10:23:12,427 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:12,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:12,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:23:12,428 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:12,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash -25691425, now seen corresponding path program 1 times [2022-10-17 10:23:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:12,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568354552] [2022-10-17 10:23:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:12,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-10-17 10:23:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568354552] [2022-10-17 10:23:13,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568354552] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:23:13,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074361132] [2022-10-17 10:23:13,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:13,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:13,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:23:13,216 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:23:13,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:23:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:13,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:23:13,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:23:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-10-17 10:23:14,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:23:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-10-17 10:23:15,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074361132] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:23:15,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:23:15,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 6 [2022-10-17 10:23:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687547302] [2022-10-17 10:23:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:15,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:23:15,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:15,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:23:15,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:23:15,559 INFO L87 Difference]: Start difference. First operand 5419 states and 6681 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:17,704 INFO L93 Difference]: Finished difference Result 13052 states and 16454 transitions. [2022-10-17 10:23:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:23:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2022-10-17 10:23:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:17,756 INFO L225 Difference]: With dead ends: 13052 [2022-10-17 10:23:17,756 INFO L226 Difference]: Without dead ends: 8929 [2022-10-17 10:23:17,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 487 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:23:17,763 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 299 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:17,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 69 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:23:17,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8929 states. [2022-10-17 10:23:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8929 to 8193. [2022-10-17 10:23:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8193 states, 8192 states have (on average 1.245849609375) internal successors, (10206), 8192 states have internal predecessors, (10206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:17,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8193 states to 8193 states and 10206 transitions. [2022-10-17 10:23:17,979 INFO L78 Accepts]: Start accepts. Automaton has 8193 states and 10206 transitions. Word has length 246 [2022-10-17 10:23:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:17,980 INFO L495 AbstractCegarLoop]: Abstraction has 8193 states and 10206 transitions. [2022-10-17 10:23:17,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8193 states and 10206 transitions. [2022-10-17 10:23:17,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-10-17 10:23:17,987 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:17,988 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:18,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:23:18,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3655c30-d0bf-4cbb-8dfb-636156729568/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:23:18,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:18,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1131175066, now seen corresponding path program 1 times [2022-10-17 10:23:18,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:18,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969886897] [2022-10-17 10:23:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-17 10:23:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:18,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969886897] [2022-10-17 10:23:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969886897] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:18,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:18,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831170636] [2022-10-17 10:23:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:18,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:18,509 INFO L87 Difference]: Start difference. First operand 8193 states and 10206 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:19,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:19,653 INFO L93 Difference]: Finished difference Result 16207 states and 20235 transitions. [2022-10-17 10:23:19,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:19,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 253 [2022-10-17 10:23:19,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:19,692 INFO L225 Difference]: With dead ends: 16207 [2022-10-17 10:23:19,692 INFO L226 Difference]: Without dead ends: 8200 [2022-10-17 10:23:19,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:19,706 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 157 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 379 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 10:23:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2022-10-17 10:23:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 8192. [2022-10-17 10:23:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 8191 states have (on average 1.2020510316200708) internal successors, (9846), 8191 states have internal predecessors, (9846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 9846 transitions. [2022-10-17 10:23:19,908 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 9846 transitions. Word has length 253 [2022-10-17 10:23:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:19,909 INFO L495 AbstractCegarLoop]: Abstraction has 8192 states and 9846 transitions. [2022-10-17 10:23:19,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 9846 transitions. [2022-10-17 10:23:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-10-17 10:23:19,921 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:19,921 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:23:19,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:23:19,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:19,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:19,923 INFO L85 PathProgramCache]: Analyzing trace with hash 126662482, now seen corresponding path program 1 times [2022-10-17 10:23:19,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:19,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111231484] [2022-10-17 10:23:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-17 10:23:20,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111231484] [2022-10-17 10:23:20,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111231484] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:20,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:20,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:20,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471693280] [2022-10-17 10:23:20,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:20,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:20,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:20,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:20,191 INFO L87 Difference]: Start difference. First operand 8192 states and 9846 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:21,187 INFO L93 Difference]: Finished difference Result 18400 states and 22298 transitions. [2022-10-17 10:23:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:21,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2022-10-17 10:23:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:21,212 INFO L225 Difference]: With dead ends: 18400 [2022-10-17 10:23:21,212 INFO L226 Difference]: Without dead ends: 10392 [2022-10-17 10:23:21,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:21,224 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 174 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:21,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 152 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:23:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10392 states. [2022-10-17 10:23:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10392 to 9283. [2022-10-17 10:23:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9283 states, 9282 states have (on average 1.152014652014652) internal successors, (10693), 9282 states have internal predecessors, (10693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9283 states to 9283 states and 10693 transitions. [2022-10-17 10:23:21,428 INFO L78 Accepts]: Start accepts. Automaton has 9283 states and 10693 transitions. Word has length 293 [2022-10-17 10:23:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:21,429 INFO L495 AbstractCegarLoop]: Abstraction has 9283 states and 10693 transitions. [2022-10-17 10:23:21,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 9283 states and 10693 transitions. [2022-10-17 10:23:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-10-17 10:23:21,442 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:21,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 10:23:21,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:23:21,443 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1759383677, now seen corresponding path program 1 times [2022-10-17 10:23:21,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:21,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238063422] [2022-10-17 10:23:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:21,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-10-17 10:23:21,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:21,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238063422] [2022-10-17 10:23:21,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238063422] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:21,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:21,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:21,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035951432] [2022-10-17 10:23:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:21,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:21,803 INFO L87 Difference]: Start difference. First operand 9283 states and 10693 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:23:22,696 INFO L93 Difference]: Finished difference Result 17270 states and 19957 transitions. [2022-10-17 10:23:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:23:22,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 323 [2022-10-17 10:23:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:23:22,716 INFO L225 Difference]: With dead ends: 17270 [2022-10-17 10:23:22,716 INFO L226 Difference]: Without dead ends: 9281 [2022-10-17 10:23:22,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:22,726 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 148 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:23:22,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 299 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-17 10:23:22,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2022-10-17 10:23:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 8729. [2022-10-17 10:23:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8729 states, 8728 states have (on average 1.135884509624198) internal successors, (9914), 8728 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8729 states to 8729 states and 9914 transitions. [2022-10-17 10:23:22,887 INFO L78 Accepts]: Start accepts. Automaton has 8729 states and 9914 transitions. Word has length 323 [2022-10-17 10:23:22,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:23:22,888 INFO L495 AbstractCegarLoop]: Abstraction has 8729 states and 9914 transitions. [2022-10-17 10:23:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:23:22,888 INFO L276 IsEmpty]: Start isEmpty. Operand 8729 states and 9914 transitions. [2022-10-17 10:23:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-10-17 10:23:22,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:23:22,902 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:23:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:23:22,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:23:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:23:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -126252397, now seen corresponding path program 1 times [2022-10-17 10:23:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:23:22,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142298461] [2022-10-17 10:23:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:23:22,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:23:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:23:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-10-17 10:23:23,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:23:23,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142298461] [2022-10-17 10:23:23,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142298461] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:23:23,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:23:23,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:23:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549566434] [2022-10-17 10:23:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:23:23,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:23:23,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:23:23,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:23:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:23:23,388 INFO L87 Difference]: Start difference. First operand 8729 states and 9914 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)