./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/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 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 --- 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 10:28:48,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:28:48,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:28:48,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:28:48,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:28:48,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:28:48,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:28:48,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:28:48,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:28:48,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:28:48,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:28:48,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:28:48,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:28:48,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:28:48,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:28:48,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:28:48,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:28:48,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:28:48,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:28:48,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:28:48,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:28:48,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:28:48,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:28:48,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:28:48,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:28:48,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:28:48,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:28:48,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:28:48,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:28:48,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:28:48,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:28:48,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:28:48,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:28:48,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:28:48,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:28:48,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:28:48,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:28:48,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:28:48,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:28:48,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:28:48,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:28:48,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:28:48,455 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:28:48,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:28:48,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:28:48,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:28:48,458 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:28:48,458 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:28:48,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:28:48,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:28:48,459 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:28:48,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:28:48,461 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:28:48,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:28:48,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:28:48,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:28:48,461 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:28:48,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:28:48,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:28:48,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:28:48,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:28:48,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:48,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:28:48,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:28:48,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:28:48,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:28:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:28:48,466 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:28:48,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:28:48,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:28:48,467 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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 [2022-10-17 10:28:48,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:28:48,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:28:48,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:28:48,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:28:48,814 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:28:48,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-10-17 10:28:48,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/data/4022f25c9/2b23afd541ca41cbbe058037c51de4f5/FLAGb48e8a3d2 [2022-10-17 10:28:49,472 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:28:49,472 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2022-10-17 10:28:49,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/data/4022f25c9/2b23afd541ca41cbbe058037c51de4f5/FLAGb48e8a3d2 [2022-10-17 10:28:49,730 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/data/4022f25c9/2b23afd541ca41cbbe058037c51de4f5 [2022-10-17 10:28:49,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:28:49,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:28:49,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:49,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:28:49,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:28:49,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:49" (1/1) ... [2022-10-17 10:28:49,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d0712b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:49, skipping insertion in model container [2022-10-17 10:28:49,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:49" (1/1) ... [2022-10-17 10:28:49,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:28:49,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:28:50,017 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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-10-17 10:28:50,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:50,167 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:28:50,179 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_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2022-10-17 10:28:50,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:50,317 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:28:50,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50 WrapperNode [2022-10-17 10:28:50,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:50,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:50,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:28:50,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:28:50,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,425 INFO L138 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 911 [2022-10-17 10:28:50,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:50,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:28:50,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:28:50,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:28:50,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:28:50,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:28:50,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:28:50,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:28:50,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (1/1) ... [2022-10-17 10:28:50,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:50,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:50,594 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:28:50,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cfdf9a5-ef2b-4e8b-8abf-6efdac8666ea/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:28:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:28:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-10-17 10:28:50,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-10-17 10:28:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-10-17 10:28:50,638 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-10-17 10:28:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-10-17 10:28:50,638 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-10-17 10:28:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-10-17 10:28:50,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-10-17 10:28:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-10-17 10:28:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-10-17 10:28:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-10-17 10:28:50,639 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-10-17 10:28:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:28:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:28:50,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:28:50,777 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:28:50,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:28:51,840 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:28:51,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:28:51,860 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:28:51,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:51 BoogieIcfgContainer [2022-10-17 10:28:51,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:28:51,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:28:51,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:28:51,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:28:51,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:28:49" (1/3) ... [2022-10-17 10:28:51,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d887067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:51, skipping insertion in model container [2022-10-17 10:28:51,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:50" (2/3) ... [2022-10-17 10:28:51,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d887067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:51, skipping insertion in model container [2022-10-17 10:28:51,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:51" (3/3) ... [2022-10-17 10:28:51,871 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2022-10-17 10:28:51,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:28:51,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:28:51,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:28:51,968 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;@1b308309, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:28:51,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:28:51,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-17 10:28:51,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:28:51,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:51,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:52,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:52,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:52,005 INFO L85 PathProgramCache]: Analyzing trace with hash 824370330, now seen corresponding path program 1 times [2022-10-17 10:28:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:52,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975179190] [2022-10-17 10:28:52,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:52,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:28:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:28:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:28:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:28:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:52,855 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 10:28:52,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:52,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975179190] [2022-10-17 10:28:52,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975179190] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:52,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:52,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:28:52,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598877684] [2022-10-17 10:28:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:52,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:28:52,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:52,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:28:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:28:52,912 INFO L87 Difference]: Start difference. First operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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 10:28:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:55,547 INFO L93 Difference]: Finished difference Result 954 states and 1591 transitions. [2022-10-17 10:28:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:28:55,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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 188 [2022-10-17 10:28:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:55,586 INFO L225 Difference]: With dead ends: 954 [2022-10-17 10:28:55,586 INFO L226 Difference]: Without dead ends: 555 [2022-10-17 10:28:55,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:28:55,605 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1103 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:55,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 1129 Invalid, 838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:28:55,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-10-17 10:28:55,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2022-10-17 10:28:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 368 states have (on average 1.578804347826087) internal successors, (581), 369 states have internal predecessors, (581), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-10-17 10:28:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 635 transitions. [2022-10-17 10:28:55,839 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 635 transitions. Word has length 188 [2022-10-17 10:28:55,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:55,840 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 635 transitions. [2022-10-17 10:28:55,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 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 10:28:55,841 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 635 transitions. [2022-10-17 10:28:55,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:28:55,848 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:55,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:28:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:28:55,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:55,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash 804829208, now seen corresponding path program 1 times [2022-10-17 10:28:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:55,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852114001] [2022-10-17 10:28:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:28:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:28:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:28:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:28:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:28:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:56,328 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 10:28:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:56,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852114001] [2022-10-17 10:28:56,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852114001] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:56,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:56,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:28:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023183175] [2022-10-17 10:28:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:56,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:28:56,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:56,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:28:56,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:28:56,345 INFO L87 Difference]: Start difference. First operand 402 states and 635 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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 10:29:00,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:00,525 INFO L93 Difference]: Finished difference Result 1490 states and 2402 transitions. [2022-10-17 10:29:00,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:29:00,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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 188 [2022-10-17 10:29:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:00,535 INFO L225 Difference]: With dead ends: 1490 [2022-10-17 10:29:00,536 INFO L226 Difference]: Without dead ends: 1109 [2022-10-17 10:29:00,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:29:00,540 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1668 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:00,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1765 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-17 10:29:00,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2022-10-17 10:29:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 804. [2022-10-17 10:29:00,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 741 states have (on average 1.5897435897435896) internal successors, (1178), 743 states have internal predecessors, (1178), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2022-10-17 10:29:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1279 transitions. [2022-10-17 10:29:00,683 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1279 transitions. Word has length 188 [2022-10-17 10:29:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:00,684 INFO L495 AbstractCegarLoop]: Abstraction has 804 states and 1279 transitions. [2022-10-17 10:29:00,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 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 10:29:00,685 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1279 transitions. [2022-10-17 10:29:00,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:29:00,688 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:00,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:29:00,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:00,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1471509604, now seen corresponding path program 1 times [2022-10-17 10:29:00,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:00,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875959413] [2022-10-17 10:29:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:00,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:29:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:00,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:29:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:29:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:29:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:29:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:01,075 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 10:29:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:01,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875959413] [2022-10-17 10:29:01,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875959413] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:01,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:01,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:29:01,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204013348] [2022-10-17 10:29:01,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:01,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:01,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:01,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:01,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:01,081 INFO L87 Difference]: Start difference. First operand 804 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:05,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:05,973 INFO L93 Difference]: Finished difference Result 2468 states and 3985 transitions. [2022-10-17 10:29:05,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:29:05,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-10-17 10:29:05,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:05,986 INFO L225 Difference]: With dead ends: 2468 [2022-10-17 10:29:05,986 INFO L226 Difference]: Without dead ends: 1685 [2022-10-17 10:29:05,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:29:05,991 INFO L413 NwaCegarLoop]: 1079 mSDtfsCounter, 1706 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:05,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 3079 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-10-17 10:29:05,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-10-17 10:29:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1177. [2022-10-17 10:29:06,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1085 states have (on average 1.5824884792626728) internal successors, (1717), 1088 states have internal predecessors, (1717), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2022-10-17 10:29:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1864 transitions. [2022-10-17 10:29:06,189 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1864 transitions. Word has length 188 [2022-10-17 10:29:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:06,189 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1864 transitions. [2022-10-17 10:29:06,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1864 transitions. [2022-10-17 10:29:06,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:29:06,195 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:06,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:29:06,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1098849370, now seen corresponding path program 1 times [2022-10-17 10:29:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474271925] [2022-10-17 10:29:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:29:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:29:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:29:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:29:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:29:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:06,545 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 10:29:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474271925] [2022-10-17 10:29:06,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474271925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:06,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:06,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:29:06,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466340132] [2022-10-17 10:29:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:06,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:06,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:06,548 INFO L87 Difference]: Start difference. First operand 1177 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:11,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:11,709 INFO L93 Difference]: Finished difference Result 3909 states and 6298 transitions. [2022-10-17 10:29:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:29:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-10-17 10:29:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:11,747 INFO L225 Difference]: With dead ends: 3909 [2022-10-17 10:29:11,748 INFO L226 Difference]: Without dead ends: 2753 [2022-10-17 10:29:11,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:29:11,765 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 1700 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 3427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:11,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1720 Valid, 3067 Invalid, 3427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-10-17 10:29:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2022-10-17 10:29:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1927. [2022-10-17 10:29:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1777 states have (on average 1.5768148564997186) internal successors, (2802), 1782 states have internal predecessors, (2802), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2022-10-17 10:29:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3045 transitions. [2022-10-17 10:29:12,091 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3045 transitions. Word has length 188 [2022-10-17 10:29:12,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:12,092 INFO L495 AbstractCegarLoop]: Abstraction has 1927 states and 3045 transitions. [2022-10-17 10:29:12,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3045 transitions. [2022-10-17 10:29:12,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:29:12,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:12,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:12,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:29:12,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:12,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1669121176, now seen corresponding path program 1 times [2022-10-17 10:29:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:12,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821268414] [2022-10-17 10:29:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:29:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:29:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:29:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:29:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:29:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:12,513 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 10:29:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:12,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821268414] [2022-10-17 10:29:12,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821268414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:12,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:12,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:29:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610211820] [2022-10-17 10:29:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:12,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:12,517 INFO L87 Difference]: Start difference. First operand 1927 states and 3045 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:29:17,648 INFO L93 Difference]: Finished difference Result 6685 states and 10723 transitions. [2022-10-17 10:29:17,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:29:17,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 188 [2022-10-17 10:29:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:29:17,681 INFO L225 Difference]: With dead ends: 6685 [2022-10-17 10:29:17,681 INFO L226 Difference]: Without dead ends: 4779 [2022-10-17 10:29:17,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:29:17,691 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 1699 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:29:17,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1719 Valid, 3062 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-10-17 10:29:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2022-10-17 10:29:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 3428. [2022-10-17 10:29:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3162 states have (on average 1.5724225173940545) internal successors, (4972), 3171 states have internal predecessors, (4972), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2022-10-17 10:29:18,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5413 transitions. [2022-10-17 10:29:18,291 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5413 transitions. Word has length 188 [2022-10-17 10:29:18,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:29:18,291 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5413 transitions. [2022-10-17 10:29:18,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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 10:29:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5413 transitions. [2022-10-17 10:29:18,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-10-17 10:29:18,297 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:18,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:29:18,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:29:18,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:18,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1221976934, now seen corresponding path program 1 times [2022-10-17 10:29:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:18,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416111047] [2022-10-17 10:29:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:18,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 10:29:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:29:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-17 10:29:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-10-17 10:29:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-10-17 10:29:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:18,675 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 10:29:18,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:18,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416111047] [2022-10-17 10:29:18,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416111047] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:18,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:18,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:29:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640821546] [2022-10-17 10:29:18,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:18,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:29:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:18,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:29:18,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:29:18,678 INFO L87 Difference]: Start difference. First operand 3428 states and 5413 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 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)