./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a --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 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e --- 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-b5237d8 [2022-11-21 09:04:06,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:04:06,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:04:06,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:04:06,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:04:06,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:04:06,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:04:06,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:04:06,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:04:06,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:04:06,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:04:06,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:04:06,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:04:06,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:04:06,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:04:06,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:04:06,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:04:06,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:04:06,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:04:06,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:04:06,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:04:06,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:04:06,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:04:06,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:04:06,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:04:06,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:04:06,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:04:06,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:04:06,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:04:06,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:04:06,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:04:06,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:04:06,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:04:06,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:04:06,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:04:06,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:04:06,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:04:06,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:04:06,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:04:06,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:04:06,340 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:04:06,341 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:04:06,370 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:04:06,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:04:06,371 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:04:06,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:04:06,372 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:04:06,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:04:06,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:04:06,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:04:06,374 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:04:06,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:04:06,374 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:04:06,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:04:06,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:04:06,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:04:06,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:04:06,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:04:06,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:04:06,376 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:04:06,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:04:06,377 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:04:06,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:04:06,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:04:06,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:04:06,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:04:06,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:06,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:04:06,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:04:06,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:04:06,380 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:04:06,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:04:06,380 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:04:06,381 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:04:06,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:04:06,381 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_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834ccc2d6e5ce947bfece9c1e11f57131346eaac8927553a9495d7568350ac6e [2022-11-21 09:04:06,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:04:06,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:04:06,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:04:06,766 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:04:06,767 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:04:06,768 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-11-21 09:04:10,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:04:10,677 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:04:10,678 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/sv-benchmarks/c/systemc/token_ring.09.cil-1.c [2022-11-21 09:04:10,701 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/data/c2af3b4cc/77d6a5d64d2443d997b7cada1f241aa4/FLAGa4bb7ae7d [2022-11-21 09:04:10,724 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/data/c2af3b4cc/77d6a5d64d2443d997b7cada1f241aa4 [2022-11-21 09:04:10,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:04:10,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:04:10,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:10,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:04:10,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:04:10,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:10" (1/1) ... [2022-11-21 09:04:10,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3497aa96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:10, skipping insertion in model container [2022-11-21 09:04:10,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:10" (1/1) ... [2022-11-21 09:04:10,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:04:10,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:04:11,048 WARN L237 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_f2f358f7-2e30-45c8-92f1-0af9595905fb/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-11-21 09:04:11,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:11,290 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:04:11,308 WARN L237 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_f2f358f7-2e30-45c8-92f1-0af9595905fb/sv-benchmarks/c/systemc/token_ring.09.cil-1.c[671,684] [2022-11-21 09:04:11,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:11,455 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:04:11,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11 WrapperNode [2022-11-21 09:04:11,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:11,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:11,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:04:11,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:04:11,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,526 INFO L138 Inliner]: procedures = 46, calls = 58, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 679 [2022-11-21 09:04:11,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:11,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:04:11,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:04:11,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:04:11,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:04:11,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:04:11,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:04:11,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:04:11,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (1/1) ... [2022-11-21 09:04:11,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:11,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:11,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:04:11,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f358f7-2e30-45c8-92f1-0af9595905fb/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:04:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:04:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 09:04:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 09:04:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 09:04:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 09:04:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 09:04:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 09:04:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 09:04:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 09:04:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 09:04:11,699 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 09:04:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:04:11,699 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 09:04:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 09:04:11,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:04:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:04:11,843 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:04:11,854 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:04:12,830 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:04:12,842 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:04:12,842 INFO L300 CfgBuilder]: Removed 12 assume(true) statements. [2022-11-21 09:04:12,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:12 BoogieIcfgContainer [2022-11-21 09:04:12,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:04:12,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:04:12,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:04:12,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:04:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:10" (1/3) ... [2022-11-21 09:04:12,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2650fe8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:12, skipping insertion in model container [2022-11-21 09:04:12,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:11" (2/3) ... [2022-11-21 09:04:12,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2650fe8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:12, skipping insertion in model container [2022-11-21 09:04:12,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:12" (3/3) ... [2022-11-21 09:04:12,864 INFO L112 eAbstractionObserver]: Analyzing ICFG token_ring.09.cil-1.c [2022-11-21 09:04:12,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:04:12,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 09:04:13,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:04:13,010 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;@1ad2f60b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:04:13,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 09:04:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-21 09:04:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:13,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:13,037 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] [2022-11-21 09:04:13,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1628036766, now seen corresponding path program 1 times [2022-11-21 09:04:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:13,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266634699] [2022-11-21 09:04:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:13,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:13,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266634699] [2022-11-21 09:04:13,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266634699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:13,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:13,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 09:04:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062297220] [2022-11-21 09:04:13,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:13,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 09:04:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:13,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 09:04:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 09:04:13,787 INFO L87 Difference]: Start difference. First operand has 307 states, 276 states have (on average 1.6521739130434783) internal successors, (456), 278 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-21 09:04:16,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:16,211 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-11-21 09:04:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 09:04:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:16,233 INFO L225 Difference]: With dead ends: 710 [2022-11-21 09:04:16,233 INFO L226 Difference]: Without dead ends: 411 [2022-11-21 09:04:16,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 09:04:16,244 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 807 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:16,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 600 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 09:04:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-21 09:04:16,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 302. [2022-11-21 09:04:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 272 states have (on average 1.5625) internal successors, (425), 273 states have internal predecessors, (425), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-21 09:04:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 471 transitions. [2022-11-21 09:04:16,402 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 471 transitions. Word has length 144 [2022-11-21 09:04:16,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:16,404 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 471 transitions. [2022-11-21 09:04:16,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-11-21 09:04:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 471 transitions. [2022-11-21 09:04:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:16,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:16,419 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] [2022-11-21 09:04:16,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:04:16,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:16,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2122057956, now seen corresponding path program 1 times [2022-11-21 09:04:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:16,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756243689] [2022-11-21 09:04:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:16,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756243689] [2022-11-21 09:04:16,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756243689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:16,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:16,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 09:04:16,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529524559] [2022-11-21 09:04:16,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:16,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 09:04:16,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 09:04:16,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 09:04:16,911 INFO L87 Difference]: Start difference. First operand 302 states and 471 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:20,726 INFO L93 Difference]: Finished difference Result 1102 states and 1758 transitions. [2022-11-21 09:04:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:20,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:20,740 INFO L225 Difference]: With dead ends: 1102 [2022-11-21 09:04:20,740 INFO L226 Difference]: Without dead ends: 817 [2022-11-21 09:04:20,749 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 [2022-11-21 09:04:20,751 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1216 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:20,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1037 Invalid, 1949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 09:04:20,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-21 09:04:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 600. [2022-11-21 09:04:20,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 545 states have (on average 1.5743119266055046) internal successors, (858), 547 states have internal predecessors, (858), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-21 09:04:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 943 transitions. [2022-11-21 09:04:20,868 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 943 transitions. Word has length 144 [2022-11-21 09:04:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:20,869 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 943 transitions. [2022-11-21 09:04:20,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 943 transitions. [2022-11-21 09:04:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:20,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:20,872 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] [2022-11-21 09:04:20,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:04:20,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash -379054432, now seen corresponding path program 1 times [2022-11-21 09:04:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:20,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915071961] [2022-11-21 09:04:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:20,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:21,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:21,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915071961] [2022-11-21 09:04:21,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915071961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:21,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:21,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:21,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559565513] [2022-11-21 09:04:21,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:21,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:21,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:21,239 INFO L87 Difference]: Start difference. First operand 600 states and 943 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:25,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:25,572 INFO L93 Difference]: Finished difference Result 1820 states and 2905 transitions. [2022-11-21 09:04:25,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:25,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:25,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:25,584 INFO L225 Difference]: With dead ends: 1820 [2022-11-21 09:04:25,584 INFO L226 Difference]: Without dead ends: 1237 [2022-11-21 09:04:25,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:25,587 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1237 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2801 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:25,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 1931 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2801 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 09:04:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-11-21 09:04:25,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 877. [2022-11-21 09:04:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 797 states have (on average 1.5671267252195733) internal successors, (1249), 800 states have internal predecessors, (1249), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-11-21 09:04:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1372 transitions. [2022-11-21 09:04:25,717 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1372 transitions. Word has length 144 [2022-11-21 09:04:25,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:25,718 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1372 transitions. [2022-11-21 09:04:25,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:25,719 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1372 transitions. [2022-11-21 09:04:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:25,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:25,721 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] [2022-11-21 09:04:25,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:04:25,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:25,722 INFO L85 PathProgramCache]: Analyzing trace with hash 567983454, now seen corresponding path program 1 times [2022-11-21 09:04:25,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:25,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727903591] [2022-11-21 09:04:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:25,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:26,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727903591] [2022-11-21 09:04:26,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727903591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:26,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:26,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015291329] [2022-11-21 09:04:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:26,088 INFO L87 Difference]: Start difference. First operand 877 states and 1372 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:30,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:30,151 INFO L93 Difference]: Finished difference Result 2878 states and 4582 transitions. [2022-11-21 09:04:30,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:30,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:30,168 INFO L225 Difference]: With dead ends: 2878 [2022-11-21 09:04:30,168 INFO L226 Difference]: Without dead ends: 2018 [2022-11-21 09:04:30,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:30,183 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1235 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:30,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 1929 Invalid, 2856 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 2797 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 09:04:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-11-21 09:04:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1432. [2022-11-21 09:04:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1302 states have (on average 1.5606758832565284) internal successors, (2032), 1307 states have internal predecessors, (2032), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-21 09:04:30,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2235 transitions. [2022-11-21 09:04:30,419 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2235 transitions. Word has length 144 [2022-11-21 09:04:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:30,421 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2235 transitions. [2022-11-21 09:04:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2235 transitions. [2022-11-21 09:04:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:30,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:30,432 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] [2022-11-21 09:04:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:04:30,433 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1429817056, now seen corresponding path program 1 times [2022-11-21 09:04:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:30,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443009309] [2022-11-21 09:04:30,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:30,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:30,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:30,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443009309] [2022-11-21 09:04:30,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443009309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:30,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:30,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:30,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668265226] [2022-11-21 09:04:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:30,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:30,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:30,714 INFO L87 Difference]: Start difference. First operand 1432 states and 2235 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:34,933 INFO L93 Difference]: Finished difference Result 4913 states and 7789 transitions. [2022-11-21 09:04:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:34,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:34,951 INFO L225 Difference]: With dead ends: 4913 [2022-11-21 09:04:34,952 INFO L226 Difference]: Without dead ends: 3498 [2022-11-21 09:04:34,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:34,957 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1231 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:34,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1929 Invalid, 2847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 09:04:34,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-11-21 09:04:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 2543. [2022-11-21 09:04:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 2313 states have (on average 1.5555555555555556) internal successors, (3598), 2322 states have internal predecessors, (3598), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-11-21 09:04:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3967 transitions. [2022-11-21 09:04:35,365 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3967 transitions. Word has length 144 [2022-11-21 09:04:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:35,366 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3967 transitions. [2022-11-21 09:04:35,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3967 transitions. [2022-11-21 09:04:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:35,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:35,370 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] [2022-11-21 09:04:35,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:04:35,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:35,372 INFO L85 PathProgramCache]: Analyzing trace with hash -620591842, now seen corresponding path program 1 times [2022-11-21 09:04:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:35,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880393994] [2022-11-21 09:04:35,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:35,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:35,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:35,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880393994] [2022-11-21 09:04:35,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880393994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:35,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:35,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:35,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985822804] [2022-11-21 09:04:35,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:35,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:35,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:35,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:35,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:35,743 INFO L87 Difference]: Start difference. First operand 2543 states and 3967 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:40,622 INFO L93 Difference]: Finished difference Result 8982 states and 14219 transitions. [2022-11-21 09:04:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:40,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:40,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:40,659 INFO L225 Difference]: With dead ends: 8982 [2022-11-21 09:04:40,660 INFO L226 Difference]: Without dead ends: 6456 [2022-11-21 09:04:40,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:40,670 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1233 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:40,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1929 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 09:04:40,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6456 states. [2022-11-21 09:04:41,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6456 to 4770. [2022-11-21 09:04:41,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4340 states have (on average 1.552073732718894) internal successors, (6736), 4357 states have internal predecessors, (6736), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-11-21 09:04:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7455 transitions. [2022-11-21 09:04:41,440 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7455 transitions. Word has length 144 [2022-11-21 09:04:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 7455 transitions. [2022-11-21 09:04:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7455 transitions. [2022-11-21 09:04:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:41,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:41,446 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] [2022-11-21 09:04:41,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:04:41,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash -132544736, now seen corresponding path program 1 times [2022-11-21 09:04:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716856756] [2022-11-21 09:04:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:41,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:41,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:41,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716856756] [2022-11-21 09:04:41,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716856756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:41,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:41,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261293448] [2022-11-21 09:04:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:41,833 INFO L87 Difference]: Start difference. First operand 4770 states and 7455 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:47,136 INFO L93 Difference]: Finished difference Result 17104 states and 27109 transitions. [2022-11-21 09:04:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:47,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:47,217 INFO L225 Difference]: With dead ends: 17104 [2022-11-21 09:04:47,217 INFO L226 Difference]: Without dead ends: 12351 [2022-11-21 09:04:47,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:47,237 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 1318 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:47,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 1275 Invalid, 2531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2444 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 09:04:47,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12351 states. [2022-11-21 09:04:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12351 to 9254. [2022-11-21 09:04:48,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9254 states, 8424 states have (on average 1.550807217473884) internal successors, (13064), 8457 states have internal predecessors, (13064), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-21 09:04:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9254 states to 9254 states and 14537 transitions. [2022-11-21 09:04:48,755 INFO L78 Accepts]: Start accepts. Automaton has 9254 states and 14537 transitions. Word has length 144 [2022-11-21 09:04:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:48,757 INFO L495 AbstractCegarLoop]: Abstraction has 9254 states and 14537 transitions. [2022-11-21 09:04:48,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 9254 states and 14537 transitions. [2022-11-21 09:04:48,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:48,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:48,766 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] [2022-11-21 09:04:48,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:04:48,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:48,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:48,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1414717022, now seen corresponding path program 1 times [2022-11-21 09:04:48,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:48,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523330954] [2022-11-21 09:04:48,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:48,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:48,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:49,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:49,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523330954] [2022-11-21 09:04:49,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523330954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:49,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:49,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348532582] [2022-11-21 09:04:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:49,102 INFO L87 Difference]: Start difference. First operand 9254 states and 14537 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:04:56,402 INFO L93 Difference]: Finished difference Result 33382 states and 53145 transitions. [2022-11-21 09:04:56,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:56,403 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:04:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:04:56,545 INFO L225 Difference]: With dead ends: 33382 [2022-11-21 09:04:56,546 INFO L226 Difference]: Without dead ends: 24145 [2022-11-21 09:04:56,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:56,589 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1228 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2733 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-21 09:04:56,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1929 Invalid, 2792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2733 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-21 09:04:56,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24145 states. [2022-11-21 09:04:59,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24145 to 18251. [2022-11-21 09:04:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 16621 states have (on average 1.5499669093315684) internal successors, (25762), 16686 states have internal predecessors, (25762), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-11-21 09:04:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 28905 transitions. [2022-11-21 09:04:59,376 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 28905 transitions. Word has length 144 [2022-11-21 09:04:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:04:59,377 INFO L495 AbstractCegarLoop]: Abstraction has 18251 states and 28905 transitions. [2022-11-21 09:04:59,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:04:59,377 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 28905 transitions. [2022-11-21 09:04:59,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:04:59,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:04:59,392 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] [2022-11-21 09:04:59,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:04:59,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:04:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:59,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1037774560, now seen corresponding path program 1 times [2022-11-21 09:04:59,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:59,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657970182] [2022-11-21 09:04:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:59,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:04:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:04:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:04:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:04:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:04:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:59,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657970182] [2022-11-21 09:04:59,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657970182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:59,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:59,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:59,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301411984] [2022-11-21 09:04:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:59,682 INFO L87 Difference]: Start difference. First operand 18251 states and 28905 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:05:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:09,204 INFO L93 Difference]: Finished difference Result 65937 states and 105815 transitions. [2022-11-21 09:05:09,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:05:09,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:05:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:09,416 INFO L225 Difference]: With dead ends: 65937 [2022-11-21 09:05:09,416 INFO L226 Difference]: Without dead ends: 47703 [2022-11-21 09:05:09,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:09,496 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1227 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2720 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:09,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1929 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2720 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 09:05:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47703 states. [2022-11-21 09:05:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47703 to 36308. [2022-11-21 09:05:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36308 states, 33078 states have (on average 1.5494286232541266) internal successors, (51252), 33207 states have internal predecessors, (51252), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-11-21 09:05:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36308 states to 36308 states and 58221 transitions. [2022-11-21 09:05:15,304 INFO L78 Accepts]: Start accepts. Automaton has 36308 states and 58221 transitions. Word has length 144 [2022-11-21 09:05:15,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:15,305 INFO L495 AbstractCegarLoop]: Abstraction has 36308 states and 58221 transitions. [2022-11-21 09:05:15,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:05:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 36308 states and 58221 transitions. [2022-11-21 09:05:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:05:15,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:15,331 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] [2022-11-21 09:05:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:05:15,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:05:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash -684228126, now seen corresponding path program 1 times [2022-11-21 09:05:15,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379645378] [2022-11-21 09:05:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:15,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:05:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:05:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:05:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:05:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:05:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:15,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:15,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379645378] [2022-11-21 09:05:15,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379645378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:15,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:15,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:05:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435428023] [2022-11-21 09:05:15,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:15,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:05:15,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:15,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:05:15,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:15,622 INFO L87 Difference]: Start difference. First operand 36308 states and 58221 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:05:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 09:05:32,966 INFO L93 Difference]: Finished difference Result 131048 states and 213005 transitions. [2022-11-21 09:05:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:05:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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 144 [2022-11-21 09:05:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 09:05:33,460 INFO L225 Difference]: With dead ends: 131048 [2022-11-21 09:05:33,461 INFO L226 Difference]: Without dead ends: 94757 [2022-11-21 09:05:33,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:05:33,686 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1226 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 09:05:33,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1929 Invalid, 2766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2707 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 09:05:33,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94757 states. [2022-11-21 09:05:43,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94757 to 72549. [2022-11-21 09:05:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72549 states, 66119 states have (on average 1.5490554908573935) internal successors, (102422), 66376 states have internal predecessors, (102422), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-11-21 09:05:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72549 states to 72549 states and 118501 transitions. [2022-11-21 09:05:44,612 INFO L78 Accepts]: Start accepts. Automaton has 72549 states and 118501 transitions. Word has length 144 [2022-11-21 09:05:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 09:05:44,612 INFO L495 AbstractCegarLoop]: Abstraction has 72549 states and 118501 transitions. [2022-11-21 09:05:44,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 09:05:44,613 INFO L276 IsEmpty]: Start isEmpty. Operand 72549 states and 118501 transitions. [2022-11-21 09:05:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-21 09:05:44,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 09:05:44,666 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] [2022-11-21 09:05:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:05:44,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 09:05:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:05:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1016871264, now seen corresponding path program 1 times [2022-11-21 09:05:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:05:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987708153] [2022-11-21 09:05:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:05:44,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:05:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 09:05:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 09:05:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 09:05:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 09:05:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 09:05:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:05:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:05:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:05:44,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987708153] [2022-11-21 09:05:44,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987708153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:05:44,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:05:44,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:05:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284127208] [2022-11-21 09:05:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:05:44,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:05:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:05:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:05:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:05:44,950 INFO L87 Difference]: Start difference. First operand 72549 states and 118501 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 5 states have internal predecessors, (134), 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)