./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:26:11,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:26:11,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:26:11,150 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:26:11,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:26:11,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:26:11,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:26:11,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:26:11,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:26:11,178 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:26:11,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:26:11,178 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:26:11,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:26:11,179 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:26:11,179 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:26:11,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:26:11,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:26:11,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:26:11,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:26:11,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:26:11,181 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:26:11,181 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:26:11,181 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:26:11,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:11,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:11,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:11,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:11,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:26:11,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:26:11,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:26:11,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:26:11,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:11,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:26:11,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:26:11,183 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:26:11,184 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:26:11,185 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 6b9a8cf062c769ab6372057423b232460c4eac80bd30ee0857d87935f050ecf1 [2024-11-28 02:26:11,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:26:11,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:26:11,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:26:11,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:26:11,561 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:26:11,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2024-11-28 02:26:14,744 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/data/a18d79482/31ab7bd05cfa42128084fec430a608b7/FLAG6ac7ba83c [2024-11-28 02:26:15,434 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:26:15,434 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/sv-benchmarks/c/eca-rers2012/Problem13_label14.c [2024-11-28 02:26:15,465 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/data/a18d79482/31ab7bd05cfa42128084fec430a608b7/FLAG6ac7ba83c [2024-11-28 02:26:15,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/data/a18d79482/31ab7bd05cfa42128084fec430a608b7 [2024-11-28 02:26:15,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:26:15,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:26:15,489 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:15,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:26:15,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:26:15,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:15" (1/1) ... [2024-11-28 02:26:15,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad6741e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:15, skipping insertion in model container [2024-11-28 02:26:15,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:26:15" (1/1) ... [2024-11-28 02:26:15,631 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:26:15,917 WARN L250 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_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2024-11-28 02:26:17,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:17,079 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:26:17,117 WARN L250 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_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/sv-benchmarks/c/eca-rers2012/Problem13_label14.c[5911,5924] [2024-11-28 02:26:17,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:26:17,768 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:26:17,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17 WrapperNode [2024-11-28 02:26:17,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:26:17,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:17,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:26:17,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:26:17,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:17,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:18,538 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-28 02:26:18,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:26:18,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:26:18,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:26:18,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:26:18,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:18,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:18,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:18,959 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:26:18,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:18,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,272 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,528 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:26:19,529 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:26:19,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:26:19,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:26:19,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (1/1) ... [2024-11-28 02:26:19,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:26:19,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:26:19,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:26:19,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:26:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:26:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:26:19,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:26:19,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:26:19,690 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:26:19,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:26:28,687 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-28 02:26:28,687 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:26:28,738 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:26:28,741 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:26:28,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:28 BoogieIcfgContainer [2024-11-28 02:26:28,742 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:26:28,745 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:26:28,745 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:26:28,753 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:26:28,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:26:15" (1/3) ... [2024-11-28 02:26:28,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fe54e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:28, skipping insertion in model container [2024-11-28 02:26:28,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:26:17" (2/3) ... [2024-11-28 02:26:28,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33fe54e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:26:28, skipping insertion in model container [2024-11-28 02:26:28,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:26:28" (3/3) ... [2024-11-28 02:26:28,758 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem13_label14.c [2024-11-28 02:26:28,778 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:26:28,779 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label14.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:26:28,892 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:26:28,907 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1ebd1d13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:26:28,907 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:26:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 02:26:28,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:28,927 INFO L218 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] [2024-11-28 02:26:28,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:28,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2024-11-28 02:26:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412512248] [2024-11-28 02:26:28,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:26:29,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:29,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412512248] [2024-11-28 02:26:29,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412512248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:26:29,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164641] [2024-11-28 02:26:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:29,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:26:29,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:29,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:26:29,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:26:29,752 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:38,475 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2024-11-28 02:26:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:26:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 02:26:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:38,508 INFO L225 Difference]: With dead ends: 3829 [2024-11-28 02:26:38,508 INFO L226 Difference]: Without dead ends: 2664 [2024-11-28 02:26:38,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:26:38,517 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 2711 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:38,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-28 02:26:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2024-11-28 02:26:38,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2024-11-28 02:26:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2024-11-28 02:26:38,733 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 41 [2024-11-28 02:26:38,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:38,733 INFO L471 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2024-11-28 02:26:38,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2024-11-28 02:26:38,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 02:26:38,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:38,747 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:38,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:26:38,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:38,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:38,748 INFO L85 PathProgramCache]: Analyzing trace with hash 791032719, now seen corresponding path program 1 times [2024-11-28 02:26:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:38,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950190960] [2024-11-28 02:26:38,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:38,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-28 02:26:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:39,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950190960] [2024-11-28 02:26:39,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950190960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89852113] [2024-11-28 02:26:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:39,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:39,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:39,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:39,315 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:44,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:44,975 INFO L93 Difference]: Finished difference Result 6142 states and 9712 transitions. [2024-11-28 02:26:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:44,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-28 02:26:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:44,991 INFO L225 Difference]: With dead ends: 6142 [2024-11-28 02:26:44,991 INFO L226 Difference]: Without dead ends: 4268 [2024-11-28 02:26:44,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:44,995 INFO L435 NwaCegarLoop]: 1039 mSDtfsCounter, 743 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:44,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1188 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 02:26:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2024-11-28 02:26:45,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4254. [2024-11-28 02:26:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4254 states, 4253 states have (on average 1.3515165765342112) internal successors, (5748), 4253 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4254 states to 4254 states and 5748 transitions. [2024-11-28 02:26:45,090 INFO L78 Accepts]: Start accepts. Automaton has 4254 states and 5748 transitions. Word has length 166 [2024-11-28 02:26:45,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:45,095 INFO L471 AbstractCegarLoop]: Abstraction has 4254 states and 5748 transitions. [2024-11-28 02:26:45,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:45,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4254 states and 5748 transitions. [2024-11-28 02:26:45,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 02:26:45,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:45,103 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:45,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:26:45,104 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:45,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1372340963, now seen corresponding path program 1 times [2024-11-28 02:26:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:45,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928520316] [2024-11-28 02:26:45,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 02:26:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928520316] [2024-11-28 02:26:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928520316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:45,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:45,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692366848] [2024-11-28 02:26:45,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:45,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:45,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:45,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:45,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:45,534 INFO L87 Difference]: Start difference. First operand 4254 states and 5748 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:50,186 INFO L93 Difference]: Finished difference Result 10897 states and 15274 transitions. [2024-11-28 02:26:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2024-11-28 02:26:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:50,219 INFO L225 Difference]: With dead ends: 10897 [2024-11-28 02:26:50,219 INFO L226 Difference]: Without dead ends: 7432 [2024-11-28 02:26:50,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:50,227 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2567 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 2567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:50,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 955 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 2567 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 02:26:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2024-11-28 02:26:50,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7426. [2024-11-28 02:26:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7426 states, 7425 states have (on average 1.288888888888889) internal successors, (9570), 7425 states have internal predecessors, (9570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7426 states to 7426 states and 9570 transitions. [2024-11-28 02:26:50,424 INFO L78 Accepts]: Start accepts. Automaton has 7426 states and 9570 transitions. Word has length 208 [2024-11-28 02:26:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:50,425 INFO L471 AbstractCegarLoop]: Abstraction has 7426 states and 9570 transitions. [2024-11-28 02:26:50,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 7426 states and 9570 transitions. [2024-11-28 02:26:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-28 02:26:50,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:50,434 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:50,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:26:50,435 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:50,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1651057734, now seen corresponding path program 1 times [2024-11-28 02:26:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620569786] [2024-11-28 02:26:50,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:50,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 02:26:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620569786] [2024-11-28 02:26:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620569786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:50,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:50,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681592056] [2024-11-28 02:26:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:50,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:50,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:50,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:50,877 INFO L87 Difference]: Start difference. First operand 7426 states and 9570 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:55,660 INFO L93 Difference]: Finished difference Result 19619 states and 25904 transitions. [2024-11-28 02:26:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:26:55,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-28 02:26:55,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:55,709 INFO L225 Difference]: With dead ends: 19619 [2024-11-28 02:26:55,709 INFO L226 Difference]: Without dead ends: 12982 [2024-11-28 02:26:55,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:55,721 INFO L435 NwaCegarLoop]: 473 mSDtfsCounter, 907 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:55,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 637 Invalid, 3429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:26:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-28 02:26:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12975. [2024-11-28 02:26:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12975 states, 12974 states have (on average 1.2719284723292739) internal successors, (16502), 12974 states have internal predecessors, (16502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12975 states to 12975 states and 16502 transitions. [2024-11-28 02:26:56,106 INFO L78 Accepts]: Start accepts. Automaton has 12975 states and 16502 transitions. Word has length 222 [2024-11-28 02:26:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:56,107 INFO L471 AbstractCegarLoop]: Abstraction has 12975 states and 16502 transitions. [2024-11-28 02:26:56,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:26:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 12975 states and 16502 transitions. [2024-11-28 02:26:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-28 02:26:56,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:56,116 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:56,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:26:56,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:56,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1939340195, now seen corresponding path program 1 times [2024-11-28 02:26:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:56,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467736528] [2024-11-28 02:26:56,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:26:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:26:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-28 02:26:56,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:26:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467736528] [2024-11-28 02:26:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467736528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:26:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:26:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599066578] [2024-11-28 02:26:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:56,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:26:56,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:56,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:26:56,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:26:56,674 INFO L87 Difference]: Start difference. First operand 12975 states and 16502 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:01,889 INFO L93 Difference]: Finished difference Result 36180 states and 46592 transitions. [2024-11-28 02:27:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:01,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2024-11-28 02:27:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:01,962 INFO L225 Difference]: With dead ends: 36180 [2024-11-28 02:27:01,962 INFO L226 Difference]: Without dead ends: 23994 [2024-11-28 02:27:01,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:01,976 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:01,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:27:02,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-11-28 02:27:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 22416. [2024-11-28 02:27:02,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22416 states, 22415 states have (on average 1.211153245594468) internal successors, (27148), 22415 states have internal predecessors, (27148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22416 states to 22416 states and 27148 transitions. [2024-11-28 02:27:02,405 INFO L78 Accepts]: Start accepts. Automaton has 22416 states and 27148 transitions. Word has length 238 [2024-11-28 02:27:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:02,406 INFO L471 AbstractCegarLoop]: Abstraction has 22416 states and 27148 transitions. [2024-11-28 02:27:02,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 22416 states and 27148 transitions. [2024-11-28 02:27:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 02:27:02,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:02,414 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:02,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:27:02,414 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:02,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:02,415 INFO L85 PathProgramCache]: Analyzing trace with hash -108620366, now seen corresponding path program 1 times [2024-11-28 02:27:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:02,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992830247] [2024-11-28 02:27:02,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:02,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:27:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992830247] [2024-11-28 02:27:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992830247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:02,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:02,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:02,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968797339] [2024-11-28 02:27:02,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:02,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:02,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:02,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:02,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:02,767 INFO L87 Difference]: Start difference. First operand 22416 states and 27148 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:08,123 INFO L93 Difference]: Finished difference Result 55858 states and 69068 transitions. [2024-11-28 02:27:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:08,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2024-11-28 02:27:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:08,222 INFO L225 Difference]: With dead ends: 55858 [2024-11-28 02:27:08,222 INFO L226 Difference]: Without dead ends: 34231 [2024-11-28 02:27:08,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:08,246 INFO L435 NwaCegarLoop]: 809 mSDtfsCounter, 888 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:08,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-28 02:27:08,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34231 states. [2024-11-28 02:27:08,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34231 to 33434. [2024-11-28 02:27:08,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33434 states, 33433 states have (on average 1.1906200460622738) internal successors, (39806), 33433 states have internal predecessors, (39806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33434 states to 33434 states and 39806 transitions. [2024-11-28 02:27:08,758 INFO L78 Accepts]: Start accepts. Automaton has 33434 states and 39806 transitions. Word has length 281 [2024-11-28 02:27:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:08,758 INFO L471 AbstractCegarLoop]: Abstraction has 33434 states and 39806 transitions. [2024-11-28 02:27:08,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 33434 states and 39806 transitions. [2024-11-28 02:27:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-28 02:27:08,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:08,767 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:08,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:27:08,767 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:08,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1558582370, now seen corresponding path program 1 times [2024-11-28 02:27:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643705376] [2024-11-28 02:27:08,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:27:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643705376] [2024-11-28 02:27:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643705376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:09,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:09,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:09,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113670403] [2024-11-28 02:27:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:09,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:27:09,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:09,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:27:09,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:09,306 INFO L87 Difference]: Start difference. First operand 33434 states and 39806 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:18,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:18,688 INFO L93 Difference]: Finished difference Result 117462 states and 141040 transitions. [2024-11-28 02:27:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:27:18,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2024-11-28 02:27:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:18,981 INFO L225 Difference]: With dead ends: 117462 [2024-11-28 02:27:18,981 INFO L226 Difference]: Without dead ends: 84817 [2024-11-28 02:27:19,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:27:19,000 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 1729 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6676 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 7793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 6676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:19,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 733 Invalid, 7793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 6676 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 02:27:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84817 states. [2024-11-28 02:27:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84817 to 84687. [2024-11-28 02:27:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1723425359563564) internal successors, (99281), 84686 states have internal predecessors, (99281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99281 transitions. [2024-11-28 02:27:20,319 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99281 transitions. Word has length 329 [2024-11-28 02:27:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:20,320 INFO L471 AbstractCegarLoop]: Abstraction has 84687 states and 99281 transitions. [2024-11-28 02:27:20,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99281 transitions. [2024-11-28 02:27:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-28 02:27:20,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:20,328 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:20,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:27:20,328 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:20,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash -350269877, now seen corresponding path program 1 times [2024-11-28 02:27:20,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:20,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815100633] [2024-11-28 02:27:20,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 02:27:21,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815100633] [2024-11-28 02:27:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815100633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:21,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:27:21,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072692042] [2024-11-28 02:27:21,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:21,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:21,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:21,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:21,010 INFO L87 Difference]: Start difference. First operand 84687 states and 99281 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:25,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:25,893 INFO L93 Difference]: Finished difference Result 158351 states and 186725 transitions. [2024-11-28 02:27:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:25,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 338 [2024-11-28 02:27:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:26,018 INFO L225 Difference]: With dead ends: 158351 [2024-11-28 02:27:26,019 INFO L226 Difference]: Without dead ends: 84696 [2024-11-28 02:27:26,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:26,044 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:26,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 02:27:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84696 states. [2024-11-28 02:27:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84696 to 84687. [2024-11-28 02:27:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84687 states, 84686 states have (on average 1.1715749946862528) internal successors, (99216), 84686 states have internal predecessors, (99216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84687 states to 84687 states and 99216 transitions. [2024-11-28 02:27:27,327 INFO L78 Accepts]: Start accepts. Automaton has 84687 states and 99216 transitions. Word has length 338 [2024-11-28 02:27:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:27,328 INFO L471 AbstractCegarLoop]: Abstraction has 84687 states and 99216 transitions. [2024-11-28 02:27:27,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 84687 states and 99216 transitions. [2024-11-28 02:27:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-11-28 02:27:27,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:27,338 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:27,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:27:27,338 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:27,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:27,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1068831891, now seen corresponding path program 1 times [2024-11-28 02:27:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:27,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897914531] [2024-11-28 02:27:27,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:27,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:27:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897914531] [2024-11-28 02:27:29,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897914531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:29,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284009450] [2024-11-28 02:27:29,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:29,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:29,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:29,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:29,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:27:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:29,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:27:29,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-28 02:27:29,818 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:27:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284009450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:29,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:27:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:27:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591447590] [2024-11-28 02:27:29,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:29,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:29,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:29,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:29,820 INFO L87 Difference]: Start difference. First operand 84687 states and 99216 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:34,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:34,317 INFO L93 Difference]: Finished difference Result 168583 states and 197637 transitions. [2024-11-28 02:27:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:34,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2024-11-28 02:27:34,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:34,439 INFO L225 Difference]: With dead ends: 168583 [2024-11-28 02:27:34,439 INFO L226 Difference]: Without dead ends: 84685 [2024-11-28 02:27:34,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:34,481 INFO L435 NwaCegarLoop]: 1365 mSDtfsCounter, 1123 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:34,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1447 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 02:27:34,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84685 states. [2024-11-28 02:27:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84685 to 83897. [2024-11-28 02:27:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83897 states, 83896 states have (on average 1.1277891675407647) internal successors, (94617), 83896 states have internal predecessors, (94617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83897 states to 83897 states and 94617 transitions. [2024-11-28 02:27:35,681 INFO L78 Accepts]: Start accepts. Automaton has 83897 states and 94617 transitions. Word has length 367 [2024-11-28 02:27:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:35,681 INFO L471 AbstractCegarLoop]: Abstraction has 83897 states and 94617 transitions. [2024-11-28 02:27:35,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 83897 states and 94617 transitions. [2024-11-28 02:27:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 02:27:35,691 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:35,692 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:35,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:27:35,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:35,892 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:35,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1731675346, now seen corresponding path program 1 times [2024-11-28 02:27:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589027881] [2024-11-28 02:27:35,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-28 02:27:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589027881] [2024-11-28 02:27:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589027881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:36,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:36,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:36,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950535700] [2024-11-28 02:27:36,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:36,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:36,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:36,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:36,379 INFO L87 Difference]: Start difference. First operand 83897 states and 94617 transitions. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:41,638 INFO L93 Difference]: Finished difference Result 192985 states and 220141 transitions. [2024-11-28 02:27:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:41,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 397 [2024-11-28 02:27:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:41,994 INFO L225 Difference]: With dead ends: 192985 [2024-11-28 02:27:41,995 INFO L226 Difference]: Without dead ends: 109877 [2024-11-28 02:27:42,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:42,026 INFO L435 NwaCegarLoop]: 859 mSDtfsCounter, 892 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:42,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 944 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 02:27:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109877 states. [2024-11-28 02:27:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109877 to 108283. [2024-11-28 02:27:42,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108283 states, 108282 states have (on average 1.1321364585064924) internal successors, (122590), 108282 states have internal predecessors, (122590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108283 states to 108283 states and 122590 transitions. [2024-11-28 02:27:43,081 INFO L78 Accepts]: Start accepts. Automaton has 108283 states and 122590 transitions. Word has length 397 [2024-11-28 02:27:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:43,081 INFO L471 AbstractCegarLoop]: Abstraction has 108283 states and 122590 transitions. [2024-11-28 02:27:43,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 108283 states and 122590 transitions. [2024-11-28 02:27:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2024-11-28 02:27:43,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:43,090 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:43,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:27:43,090 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:43,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1783059347, now seen corresponding path program 1 times [2024-11-28 02:27:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425075713] [2024-11-28 02:27:43,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-28 02:27:43,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:43,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425075713] [2024-11-28 02:27:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425075713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:27:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:27:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727889277] [2024-11-28 02:27:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:43,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:43,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:43,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:43,697 INFO L87 Difference]: Start difference. First operand 108283 states and 122590 transitions. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:48,653 INFO L93 Difference]: Finished difference Result 241763 states and 276153 transitions. [2024-11-28 02:27:48,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 435 [2024-11-28 02:27:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:48,775 INFO L225 Difference]: With dead ends: 241763 [2024-11-28 02:27:48,775 INFO L226 Difference]: Without dead ends: 134269 [2024-11-28 02:27:48,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:27:48,816 INFO L435 NwaCegarLoop]: 1787 mSDtfsCounter, 781 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:48,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1938 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:27:48,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134269 states. [2024-11-28 02:27:50,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134269 to 134252. [2024-11-28 02:27:50,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134252 states, 134251 states have (on average 1.1154032372198346) internal successors, (149744), 134251 states have internal predecessors, (149744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134252 states to 134252 states and 149744 transitions. [2024-11-28 02:27:50,472 INFO L78 Accepts]: Start accepts. Automaton has 134252 states and 149744 transitions. Word has length 435 [2024-11-28 02:27:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:50,473 INFO L471 AbstractCegarLoop]: Abstraction has 134252 states and 149744 transitions. [2024-11-28 02:27:50,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 134252 states and 149744 transitions. [2024-11-28 02:27:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2024-11-28 02:27:50,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:50,490 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:50,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:27:50,491 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:50,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:50,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1750126426, now seen corresponding path program 1 times [2024-11-28 02:27:50,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:50,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839979826] [2024-11-28 02:27:50,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:50,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 315 proven. 113 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:27:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:27:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839979826] [2024-11-28 02:27:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839979826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:27:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833895666] [2024-11-28 02:27:52,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:52,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:52,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:27:52,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:27:52,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:27:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:53,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:27:53,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-28 02:27:53,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:27:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833895666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:27:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:27:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 02:27:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453461040] [2024-11-28 02:27:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:27:53,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:27:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:27:53,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:27:53,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:53,334 INFO L87 Difference]: Start difference. First operand 134252 states and 149744 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:27:57,698 INFO L93 Difference]: Finished difference Result 261381 states and 293523 transitions. [2024-11-28 02:27:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:27:57,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 471 [2024-11-28 02:27:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:27:57,825 INFO L225 Difference]: With dead ends: 261381 [2024-11-28 02:27:57,825 INFO L226 Difference]: Without dead ends: 143666 [2024-11-28 02:27:57,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:27:57,876 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 1135 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:27:57,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 389 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 02:27:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143666 states. [2024-11-28 02:27:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143666 to 143666. [2024-11-28 02:27:59,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143666 states, 143665 states have (on average 1.110381790972053) internal successors, (159523), 143665 states have internal predecessors, (159523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:59,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143666 states to 143666 states and 159523 transitions. [2024-11-28 02:27:59,630 INFO L78 Accepts]: Start accepts. Automaton has 143666 states and 159523 transitions. Word has length 471 [2024-11-28 02:27:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:27:59,631 INFO L471 AbstractCegarLoop]: Abstraction has 143666 states and 159523 transitions. [2024-11-28 02:27:59,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:27:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand 143666 states and 159523 transitions. [2024-11-28 02:27:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-28 02:27:59,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:27:59,641 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:27:59,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:27:59,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:27:59,841 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:27:59,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:27:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -274368295, now seen corresponding path program 1 times [2024-11-28 02:27:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:27:59,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689377691] [2024-11-28 02:27:59,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:27:59,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:27:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 242 proven. 110 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:28:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689377691] [2024-11-28 02:28:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689377691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744017568] [2024-11-28 02:28:02,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:02,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:02,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:02,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:28:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:02,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:28:02,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-11-28 02:28:04,899 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:28:04,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744017568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:04,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:28:04,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 02:28:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693237775] [2024-11-28 02:28:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:04,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:04,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:04,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:04,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:28:04,909 INFO L87 Difference]: Start difference. First operand 143666 states and 159523 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:09,608 INFO L93 Difference]: Finished difference Result 274744 states and 305966 transitions. [2024-11-28 02:28:09,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:09,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 506 [2024-11-28 02:28:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:09,731 INFO L225 Difference]: With dead ends: 274744 [2024-11-28 02:28:09,731 INFO L226 Difference]: Without dead ends: 147615 [2024-11-28 02:28:09,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:28:09,769 INFO L435 NwaCegarLoop]: 1012 mSDtfsCounter, 544 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:09,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 1142 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:28:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147615 states. [2024-11-28 02:28:11,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147615 to 147605. [2024-11-28 02:28:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147605 states, 147604 states have (on average 1.108655591989377) internal successors, (163642), 147604 states have internal predecessors, (163642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147605 states to 147605 states and 163642 transitions. [2024-11-28 02:28:11,456 INFO L78 Accepts]: Start accepts. Automaton has 147605 states and 163642 transitions. Word has length 506 [2024-11-28 02:28:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:11,457 INFO L471 AbstractCegarLoop]: Abstraction has 147605 states and 163642 transitions. [2024-11-28 02:28:11,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 147605 states and 163642 transitions. [2024-11-28 02:28:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2024-11-28 02:28:11,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:11,467 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:11,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:28:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:11,668 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1583154431, now seen corresponding path program 1 times [2024-11-28 02:28:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702885766] [2024-11-28 02:28:11,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 951 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-11-28 02:28:11,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:11,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702885766] [2024-11-28 02:28:11,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702885766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:11,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:11,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:28:11,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574877158] [2024-11-28 02:28:11,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:11,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:11,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:11,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:11,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:11,935 INFO L87 Difference]: Start difference. First operand 147605 states and 163642 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:15,242 INFO L93 Difference]: Finished difference Result 277082 states and 307974 transitions. [2024-11-28 02:28:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 526 [2024-11-28 02:28:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:15,374 INFO L225 Difference]: With dead ends: 277082 [2024-11-28 02:28:15,374 INFO L226 Difference]: Without dead ends: 146014 [2024-11-28 02:28:15,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:15,415 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 1633 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:15,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 297 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:28:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146014 states. [2024-11-28 02:28:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146014 to 146013. [2024-11-28 02:28:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146013 states, 146012 states have (on average 1.1066350710900474) internal successors, (161582), 146012 states have internal predecessors, (161582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146013 states to 146013 states and 161582 transitions. [2024-11-28 02:28:17,158 INFO L78 Accepts]: Start accepts. Automaton has 146013 states and 161582 transitions. Word has length 526 [2024-11-28 02:28:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:17,158 INFO L471 AbstractCegarLoop]: Abstraction has 146013 states and 161582 transitions. [2024-11-28 02:28:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 146013 states and 161582 transitions. [2024-11-28 02:28:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2024-11-28 02:28:17,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:17,183 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:17,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:28:17,183 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:17,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 89916656, now seen corresponding path program 1 times [2024-11-28 02:28:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610338876] [2024-11-28 02:28:17,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:17,884 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 784 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-28 02:28:17,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:17,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610338876] [2024-11-28 02:28:17,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610338876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:17,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:17,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:17,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190665824] [2024-11-28 02:28:17,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:17,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:17,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:17,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:17,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:17,887 INFO L87 Difference]: Start difference. First operand 146013 states and 161582 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:22,376 INFO L93 Difference]: Finished difference Result 291244 states and 322385 transitions. [2024-11-28 02:28:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:22,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 564 [2024-11-28 02:28:22,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:22,518 INFO L225 Difference]: With dead ends: 291244 [2024-11-28 02:28:22,518 INFO L226 Difference]: Without dead ends: 146020 [2024-11-28 02:28:22,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:22,574 INFO L435 NwaCegarLoop]: 1353 mSDtfsCounter, 831 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:22,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 1434 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:28:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146020 states. [2024-11-28 02:28:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146020 to 146006. [2024-11-28 02:28:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146006 states, 146005 states have (on average 1.0816273415293998) internal successors, (157923), 146005 states have internal predecessors, (157923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146006 states to 146006 states and 157923 transitions. [2024-11-28 02:28:24,220 INFO L78 Accepts]: Start accepts. Automaton has 146006 states and 157923 transitions. Word has length 564 [2024-11-28 02:28:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:24,221 INFO L471 AbstractCegarLoop]: Abstraction has 146006 states and 157923 transitions. [2024-11-28 02:28:24,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 146006 states and 157923 transitions. [2024-11-28 02:28:24,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2024-11-28 02:28:24,235 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:24,235 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:24,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:28:24,235 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:24,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:24,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2113284322, now seen corresponding path program 1 times [2024-11-28 02:28:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:24,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440889318] [2024-11-28 02:28:24,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:24,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 02:28:24,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:24,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440889318] [2024-11-28 02:28:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440889318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:24,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584950097] [2024-11-28 02:28:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:24,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:24,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:24,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:24,732 INFO L87 Difference]: Start difference. First operand 146006 states and 157923 transitions. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:29,475 INFO L93 Difference]: Finished difference Result 295134 states and 318944 transitions. [2024-11-28 02:28:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 595 [2024-11-28 02:28:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:29,609 INFO L225 Difference]: With dead ends: 295134 [2024-11-28 02:28:29,609 INFO L226 Difference]: Without dead ends: 147553 [2024-11-28 02:28:29,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:29,655 INFO L435 NwaCegarLoop]: 1456 mSDtfsCounter, 996 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:29,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1579 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:28:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147553 states. [2024-11-28 02:28:30,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147553 to 142036. [2024-11-28 02:28:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142036 states, 142035 states have (on average 1.0525363466751152) internal successors, (149497), 142035 states have internal predecessors, (149497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:31,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142036 states to 142036 states and 149497 transitions. [2024-11-28 02:28:31,477 INFO L78 Accepts]: Start accepts. Automaton has 142036 states and 149497 transitions. Word has length 595 [2024-11-28 02:28:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:31,477 INFO L471 AbstractCegarLoop]: Abstraction has 142036 states and 149497 transitions. [2024-11-28 02:28:31,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 142036 states and 149497 transitions. [2024-11-28 02:28:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2024-11-28 02:28:31,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:31,491 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:31,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:28:31,491 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:31,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2022234279, now seen corresponding path program 1 times [2024-11-28 02:28:31,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:31,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071243340] [2024-11-28 02:28:31,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:31,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 734 proven. 75 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 02:28:32,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:32,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071243340] [2024-11-28 02:28:32,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071243340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:28:32,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177060448] [2024-11-28 02:28:32,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:32,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:28:32,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:28:32,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:28:32,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:28:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:32,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:28:32,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:28:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 872 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 02:28:34,277 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:28:34,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177060448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:34,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:28:34,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-28 02:28:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073357832] [2024-11-28 02:28:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:34,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:28:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:34,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:28:34,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:34,280 INFO L87 Difference]: Start difference. First operand 142036 states and 149497 transitions. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:39,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:39,357 INFO L93 Difference]: Finished difference Result 269901 states and 284576 transitions. [2024-11-28 02:28:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:28:39,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 639 [2024-11-28 02:28:39,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:39,467 INFO L225 Difference]: With dead ends: 269901 [2024-11-28 02:28:39,467 INFO L226 Difference]: Without dead ends: 143613 [2024-11-28 02:28:39,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:39,493 INFO L435 NwaCegarLoop]: 600 mSDtfsCounter, 2246 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 3687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:39,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 746 Invalid, 3687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 02:28:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143613 states. [2024-11-28 02:28:40,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143613 to 142032. [2024-11-28 02:28:40,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142032 states, 142031 states have (on average 1.0505805070723997) internal successors, (149215), 142031 states have internal predecessors, (149215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142032 states to 142032 states and 149215 transitions. [2024-11-28 02:28:40,851 INFO L78 Accepts]: Start accepts. Automaton has 142032 states and 149215 transitions. Word has length 639 [2024-11-28 02:28:40,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:40,851 INFO L471 AbstractCegarLoop]: Abstraction has 142032 states and 149215 transitions. [2024-11-28 02:28:40,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 142032 states and 149215 transitions. [2024-11-28 02:28:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 646 [2024-11-28 02:28:40,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:40,866 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:40,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:28:41,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9e17396-ea6c-4ee1-b3f1-4b04e3a55ed1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:28:41,067 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:41,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash 36872080, now seen corresponding path program 1 times [2024-11-28 02:28:41,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:41,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200888108] [2024-11-28 02:28:41,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:41,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 740 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2024-11-28 02:28:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:41,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200888108] [2024-11-28 02:28:41,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200888108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:41,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:41,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:41,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041058268] [2024-11-28 02:28:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:41,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:41,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:41,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:41,797 INFO L87 Difference]: Start difference. First operand 142032 states and 149215 transitions. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:46,296 INFO L93 Difference]: Finished difference Result 282494 states and 296849 transitions. [2024-11-28 02:28:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:46,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 645 [2024-11-28 02:28:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:46,407 INFO L225 Difference]: With dead ends: 282494 [2024-11-28 02:28:46,408 INFO L226 Difference]: Without dead ends: 141251 [2024-11-28 02:28:46,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:46,435 INFO L435 NwaCegarLoop]: 1622 mSDtfsCounter, 826 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:46,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1747 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:28:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141251 states. [2024-11-28 02:28:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141251 to 138882. [2024-11-28 02:28:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138882 states, 138881 states have (on average 1.0420215868261318) internal successors, (144717), 138881 states have internal predecessors, (144717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:47,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138882 states to 138882 states and 144717 transitions. [2024-11-28 02:28:47,760 INFO L78 Accepts]: Start accepts. Automaton has 138882 states and 144717 transitions. Word has length 645 [2024-11-28 02:28:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:47,761 INFO L471 AbstractCegarLoop]: Abstraction has 138882 states and 144717 transitions. [2024-11-28 02:28:47,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 138882 states and 144717 transitions. [2024-11-28 02:28:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2024-11-28 02:28:47,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:47,780 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:47,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:28:47,780 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:47,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1683651278, now seen corresponding path program 1 times [2024-11-28 02:28:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:47,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112496005] [2024-11-28 02:28:47,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 599 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-28 02:28:48,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:48,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112496005] [2024-11-28 02:28:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112496005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:48,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363342206] [2024-11-28 02:28:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:48,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:48,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:48,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:48,631 INFO L87 Difference]: Start difference. First operand 138882 states and 144717 transitions. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:53,987 INFO L93 Difference]: Finished difference Result 287222 states and 299976 transitions. [2024-11-28 02:28:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:28:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 675 [2024-11-28 02:28:53,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:54,119 INFO L225 Difference]: With dead ends: 287222 [2024-11-28 02:28:54,119 INFO L226 Difference]: Without dead ends: 161727 [2024-11-28 02:28:54,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:54,150 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 818 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2447 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 2447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:54,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 854 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [581 Valid, 2447 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:28:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161727 states. [2024-11-28 02:28:55,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161727 to 138882. [2024-11-28 02:28:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138882 states, 138881 states have (on average 1.0420863905069808) internal successors, (144726), 138881 states have internal predecessors, (144726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138882 states to 138882 states and 144726 transitions. [2024-11-28 02:28:55,649 INFO L78 Accepts]: Start accepts. Automaton has 138882 states and 144726 transitions. Word has length 675 [2024-11-28 02:28:55,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:55,650 INFO L471 AbstractCegarLoop]: Abstraction has 138882 states and 144726 transitions. [2024-11-28 02:28:55,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:28:55,650 INFO L276 IsEmpty]: Start isEmpty. Operand 138882 states and 144726 transitions. [2024-11-28 02:28:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2024-11-28 02:28:55,663 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:55,663 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:55,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:28:55,664 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:55,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:55,664 INFO L85 PathProgramCache]: Analyzing trace with hash 53491352, now seen corresponding path program 1 times [2024-11-28 02:28:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86927525] [2024-11-28 02:28:55,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:28:55,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:28:56,661 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 497 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-28 02:28:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86927525] [2024-11-28 02:28:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86927525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:56,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:28:56,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593370246] [2024-11-28 02:28:56,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:56,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:28:56,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:56,665 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:28:56,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:28:56,666 INFO L87 Difference]: Start difference. First operand 138882 states and 144726 transitions. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:01,840 INFO L93 Difference]: Finished difference Result 309261 states and 323155 transitions. [2024-11-28 02:29:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:29:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 692 [2024-11-28 02:29:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:01,997 INFO L225 Difference]: With dead ends: 309261 [2024-11-28 02:29:01,997 INFO L226 Difference]: Without dead ends: 181401 [2024-11-28 02:29:02,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:29:02,040 INFO L435 NwaCegarLoop]: 737 mSDtfsCounter, 831 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:02,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 842 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:29:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181401 states. [2024-11-28 02:29:03,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181401 to 153047. [2024-11-28 02:29:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153047 states, 153046 states have (on average 1.0394129869451014) internal successors, (159078), 153046 states have internal predecessors, (159078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)