./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.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_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/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_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/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_ad5c7012-8161-485b-84bd-5211407eee48/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 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 --- 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 11:00:24,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:00:24,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:00:24,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:00:24,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:00:24,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:00:24,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:00:24,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:00:24,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:00:24,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:00:24,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:00:24,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:00:24,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:00:24,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:00:24,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:00:24,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:00:24,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:00:24,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:00:24,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:00:24,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:00:24,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:00:24,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:00:24,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:00:24,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:00:24,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:00:24,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:00:24,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:00:24,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:00:24,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:00:24,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:00:24,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:00:24,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:00:24,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:00:24,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:00:24,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:00:24,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:00:24,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:00:24,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:00:24,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:00:24,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:00:24,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:00:24,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:00:24,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:00:24,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:00:24,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:00:24,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:00:24,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:00:24,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:00:24,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:00:24,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:00:24,419 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:00:24,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:00:24,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:00:24,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:00:24,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:00:24,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:00:24,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:00:24,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:00:24,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:00:24,422 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:00:24,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:00:24,422 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:00:24,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:00:24,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:00:24,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:00:24,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:00:24,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:24,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:00:24,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:00:24,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:00:24,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:00:24,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:00:24,426 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:00:24,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:00:24,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:00:24,427 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_ad5c7012-8161-485b-84bd-5211407eee48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c711e78fce30df46f5383f1c4f7f14d04991b46d5fa8feba742040345837246 [2022-10-17 11:00:24,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:00:24,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:00:24,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:00:24,770 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:00:24,770 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:00:24,771 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-10-17 11:00:24,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/data/f0eaa9971/3ee1f70342b047538d671d8c5fadb20b/FLAG05438b281 [2022-10-17 11:00:25,900 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:00:25,901 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c [2022-10-17 11:00:25,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/data/f0eaa9971/3ee1f70342b047538d671d8c5fadb20b/FLAG05438b281 [2022-10-17 11:00:26,183 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/data/f0eaa9971/3ee1f70342b047538d671d8c5fadb20b [2022-10-17 11:00:26,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:00:26,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:00:26,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:26,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:00:26,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:00:26,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:26" (1/1) ... [2022-10-17 11:00:26,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8f8686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:26, skipping insertion in model container [2022-10-17 11:00:26,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:00:26" (1/1) ... [2022-10-17 11:00:26,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:00:26,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:00:28,988 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_ad5c7012-8161-485b-84bd-5211407eee48/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2022-10-17 11:00:29,022 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_ad5c7012-8161-485b-84bd-5211407eee48/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2022-10-17 11:00:29,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:29,361 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:00:30,610 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_ad5c7012-8161-485b-84bd-5211407eee48/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c[377340,377353] [2022-10-17 11:00:30,621 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_ad5c7012-8161-485b-84bd-5211407eee48/sv-benchmarks/c/combinations/Problem05_label44+token_ring.07.cil-1.c[383339,383352] [2022-10-17 11:00:30,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:00:30,745 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:00:30,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30 WrapperNode [2022-10-17 11:00:30,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:00:30,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:30,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:00:30,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:00:30,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:30,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,395 INFO L138 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2022-10-17 11:00:31,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:00:31,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:00:31,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:00:31,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:00:31,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:00:31,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:00:31,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:00:31,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:00:31,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (1/1) ... [2022-10-17 11:00:31,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:00:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:31,984 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:00:32,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad5c7012-8161-485b-84bd-5211407eee48/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:00:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:00:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 11:00:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 11:00:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 11:00:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 11:00:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 11:00:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 11:00:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 11:00:32,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 11:00:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 11:00:32,110 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 11:00:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 11:00:32,110 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 11:00:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:00:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:00:32,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:00:32,300 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:00:32,316 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:00:41,346 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:00:41,402 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:00:41,403 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-10-17 11:00:41,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:41 BoogieIcfgContainer [2022-10-17 11:00:41,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:00:41,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:00:41,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:00:41,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:00:41,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:00:26" (1/3) ... [2022-10-17 11:00:41,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257167aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:41, skipping insertion in model container [2022-10-17 11:00:41,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:00:30" (2/3) ... [2022-10-17 11:00:41,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257167aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:00:41, skipping insertion in model container [2022-10-17 11:00:41,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:00:41" (3/3) ... [2022-10-17 11:00:41,425 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.07.cil-1.c [2022-10-17 11:00:41,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:00:41,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 11:00:41,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:00:41,589 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;@31d4c365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:00:41,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 11:00:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 11:00:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 11:00:41,625 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:41,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:41,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-10-17 11:00:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:41,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867261558] [2022-10-17 11:00:41,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:41,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 11:00:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:00:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:00:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 11:00:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 11:00:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:42,243 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 11:00:42,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:42,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867261558] [2022-10-17 11:00:42,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867261558] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:42,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:42,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:00:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760601558] [2022-10-17 11:00:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:42,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:00:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:00:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:00:42,303 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:43,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:43,802 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2022-10-17 11:00:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:00:43,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-10-17 11:00:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:43,844 INFO L225 Difference]: With dead ends: 4955 [2022-10-17 11:00:43,845 INFO L226 Difference]: Without dead ends: 2460 [2022-10-17 11:00:43,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:00:43,861 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12335 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:43,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [672 Valid, 16788 Invalid, 508 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-10-17 11:00:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2022-10-17 11:00:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2022-10-17 11:00:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 11:00:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-10-17 11:00:44,057 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-10-17 11:00:44,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:44,058 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-10-17 11:00:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:44,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-10-17 11:00:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 11:00:44,069 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:44,069 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:00:44,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:44,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-10-17 11:00:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:44,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738776921] [2022-10-17 11:00:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:44,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 11:00:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:00:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:00:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 11:00:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 11:00:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:44,401 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 11:00:44,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:44,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738776921] [2022-10-17 11:00:44,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738776921] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:44,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:44,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:00:44,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68697242] [2022-10-17 11:00:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:44,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:00:44,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:00:44,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:00:44,405 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:46,919 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2022-10-17 11:00:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 11:00:46,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-10-17 11:00:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:46,941 INFO L225 Difference]: With dead ends: 3029 [2022-10-17 11:00:46,941 INFO L226 Difference]: Without dead ends: 2792 [2022-10-17 11:00:46,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:00:46,945 INFO L413 NwaCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12503 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16919 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:46,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4949 Valid, 16919 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 11:00:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2022-10-17 11:00:47,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2022-10-17 11:00:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-10-17 11:00:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2022-10-17 11:00:47,062 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2022-10-17 11:00:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:47,063 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2022-10-17 11:00:47,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:47,063 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2022-10-17 11:00:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 11:00:47,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:47,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:00:47,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-10-17 11:00:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490193216] [2022-10-17 11:00:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 11:00:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:00:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:00:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 11:00:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 11:00:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:47,393 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 11:00:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:47,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490193216] [2022-10-17 11:00:47,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490193216] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:47,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:47,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78193182] [2022-10-17 11:00:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:47,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:47,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:47,400 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:00:49,972 INFO L93 Difference]: Finished difference Result 3617 states and 6323 transitions. [2022-10-17 11:00:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 11:00:49,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-10-17 11:00:49,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:00:50,000 INFO L225 Difference]: With dead ends: 3617 [2022-10-17 11:00:50,000 INFO L226 Difference]: Without dead ends: 3134 [2022-10-17 11:00:50,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 11:00:50,006 INFO L413 NwaCegarLoop]: 4607 mSDtfsCounter, 4944 mSDsluCounter, 17064 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 21671 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:00:50,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4958 Valid, 21671 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 11:00:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2022-10-17 11:00:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2848. [2022-10-17 11:00:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7933645870897945) internal successors, (4973), 2777 states have internal predecessors, (4973), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-10-17 11:00:50,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5084 transitions. [2022-10-17 11:00:50,186 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5084 transitions. Word has length 123 [2022-10-17 11:00:50,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:00:50,186 INFO L495 AbstractCegarLoop]: Abstraction has 2848 states and 5084 transitions. [2022-10-17 11:00:50,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-17 11:00:50,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5084 transitions. [2022-10-17 11:00:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-10-17 11:00:50,190 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:00:50,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:50,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:00:50,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:00:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:50,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2022-10-17 11:00:50,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:50,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765277661] [2022-10-17 11:00:50,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:50,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-17 11:00:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 11:00:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-17 11:00:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-17 11:00:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-17 11:00:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:50,591 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 11:00:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:50,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765277661] [2022-10-17 11:00:50,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765277661] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:00:50,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:00:50,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:00:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612459340] [2022-10-17 11:00:50,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:00:50,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:00:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:50,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:00:50,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:00:50,595 INFO L87 Difference]: Start difference. First operand 2848 states and 5084 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)