./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.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_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/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_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/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_0e1cd46b-010d-4469-a5c5-c7266abf0061/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 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:30:07,506 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:30:07,622 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:30:07,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:30:07,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:30:07,683 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:30:07,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:30:07,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:30:07,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:30:07,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:30:07,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:30:07,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:30:07,685 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:30:07,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:30:07,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:30:07,687 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:30:07,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:07,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:30:07,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:07,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:30:07,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:30:07,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:30:07,690 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_0e1cd46b-010d-4469-a5c5-c7266abf0061/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 -> 25ff40e1cab2a460fc960bb835e8a5bb98b4f09095caa25e5ce8f52bf887c901 [2024-11-28 03:30:08,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:30:08,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:30:08,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:30:08,036 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:30:08,037 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:30:08,039 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-28 03:30:11,228 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/data/5fabca5f1/fc42ffcbad5043f2ba71d91c74776fee/FLAGf159e360e [2024-11-28 03:30:11,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:30:11,633 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-28 03:30:11,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/data/5fabca5f1/fc42ffcbad5043f2ba71d91c74776fee/FLAGf159e360e [2024-11-28 03:30:11,674 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/data/5fabca5f1/fc42ffcbad5043f2ba71d91c74776fee [2024-11-28 03:30:11,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:30:11,679 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:30:11,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:30:11,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:30:11,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:30:11,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:30:11" (1/1) ... [2024-11-28 03:30:11,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58735c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:11, skipping insertion in model container [2024-11-28 03:30:11,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:30:11" (1/1) ... [2024-11-28 03:30:11,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:30:12,002 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_0e1cd46b-010d-4469-a5c5-c7266abf0061/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-11-28 03:30:12,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:30:12,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:30:12,089 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_0e1cd46b-010d-4469-a5c5-c7266abf0061/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.BOUNDED-6.pals.c[5947,5960] [2024-11-28 03:30:12,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:30:12,115 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:30:12,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12 WrapperNode [2024-11-28 03:30:12,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:30:12,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:30:12,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:30:12,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:30:12,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,164 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 221 [2024-11-28 03:30:12,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:30:12,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:30:12,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:30:12,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:30:12,176 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,179 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,207 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 03:30:12,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,219 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:30:12,239 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:30:12,239 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:30:12,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:30:12,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (1/1) ... [2024-11-28 03:30:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:30:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:12,279 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:30:12,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:30:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:30:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:30:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:30:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:30:12,427 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:30:12,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:30:12,952 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-28 03:30:12,952 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:30:12,966 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:30:12,966 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:30:12,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:12 BoogieIcfgContainer [2024-11-28 03:30:12,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:30:12,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:30:12,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:30:12,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:30:12,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:30:11" (1/3) ... [2024-11-28 03:30:12,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b48b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:12, skipping insertion in model container [2024-11-28 03:30:12,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:30:12" (2/3) ... [2024-11-28 03:30:12,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b48b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:30:12, skipping insertion in model container [2024-11-28 03:30:12,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:30:12" (3/3) ... [2024-11-28 03:30:12,981 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c [2024-11-28 03:30:13,001 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:30:13,007 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c that has 1 procedures, 57 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:30:13,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:30:13,100 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;@2fc51fec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:30:13,101 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:30:13,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 55 states have (on average 1.690909090909091) internal successors, (93), 56 states have internal predecessors, (93), 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 03:30:13,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:30:13,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:13,114 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] [2024-11-28 03:30:13,114 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:13,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1016771987, now seen corresponding path program 1 times [2024-11-28 03:30:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:13,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924727007] [2024-11-28 03:30:13,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:13,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:13,426 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 03:30:13,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:13,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924727007] [2024-11-28 03:30:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924727007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:30:13,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009762308] [2024-11-28 03:30:13,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:13,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:30:13,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:13,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:30:13,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:30:13,464 INFO L87 Difference]: Start difference. First operand has 57 states, 55 states have (on average 1.690909090909091) internal successors, (93), 56 states have internal predecessors, (93), 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 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 03:30:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:13,482 INFO L93 Difference]: Finished difference Result 93 states and 148 transitions. [2024-11-28 03:30:13,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:30:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2024-11-28 03:30:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:13,507 INFO L225 Difference]: With dead ends: 93 [2024-11-28 03:30:13,508 INFO L226 Difference]: Without dead ends: 53 [2024-11-28 03:30:13,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:30:13,518 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:13,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:13,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-28 03:30:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-28 03:30:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.6538461538461537) internal successors, (86), 52 states have internal predecessors, (86), 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 03:30:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 86 transitions. [2024-11-28 03:30:13,560 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 86 transitions. Word has length 20 [2024-11-28 03:30:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:13,562 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 86 transitions. [2024-11-28 03:30:13,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 03:30:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 86 transitions. [2024-11-28 03:30:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:30:13,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:13,564 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] [2024-11-28 03:30:13,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:30:13,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:13,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -263091691, now seen corresponding path program 1 times [2024-11-28 03:30:13,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:13,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156905819] [2024-11-28 03:30:13,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:13,893 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 03:30:13,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:13,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156905819] [2024-11-28 03:30:13,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156905819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:13,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:13,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969171284] [2024-11-28 03:30:13,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:13,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:13,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:13,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:13,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:13,898 INFO L87 Difference]: Start difference. First operand 53 states and 86 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 03:30:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:14,014 INFO L93 Difference]: Finished difference Result 119 states and 186 transitions. [2024-11-28 03:30:14,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:14,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2024-11-28 03:30:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:14,016 INFO L225 Difference]: With dead ends: 119 [2024-11-28 03:30:14,016 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:30:14,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:14,018 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 47 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:14,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 306 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:14,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:30:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 53. [2024-11-28 03:30:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 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 03:30:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-11-28 03:30:14,025 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 20 [2024-11-28 03:30:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:14,026 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-11-28 03:30:14,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 03:30:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-11-28 03:30:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:30:14,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:14,027 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] [2024-11-28 03:30:14,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:30:14,027 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:14,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:14,028 INFO L85 PathProgramCache]: Analyzing trace with hash -668548648, now seen corresponding path program 1 times [2024-11-28 03:30:14,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:14,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17168911] [2024-11-28 03:30:14,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:14,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:14,271 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 03:30:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17168911] [2024-11-28 03:30:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17168911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:14,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172460844] [2024-11-28 03:30:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:14,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:14,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:14,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:14,276 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 03:30:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:14,507 INFO L93 Difference]: Finished difference Result 239 states and 358 transitions. [2024-11-28 03:30:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:30:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2024-11-28 03:30:14,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:14,512 INFO L225 Difference]: With dead ends: 239 [2024-11-28 03:30:14,512 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 03:30:14,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:30:14,515 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 276 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:14,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 436 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 03:30:14,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 82. [2024-11-28 03:30:14,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 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 03:30:14,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 115 transitions. [2024-11-28 03:30:14,529 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 115 transitions. Word has length 35 [2024-11-28 03:30:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:14,529 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 115 transitions. [2024-11-28 03:30:14,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 03:30:14,530 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 115 transitions. [2024-11-28 03:30:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:30:14,531 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:14,531 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] [2024-11-28 03:30:14,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:30:14,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash 354142280, now seen corresponding path program 1 times [2024-11-28 03:30:14,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494571803] [2024-11-28 03:30:14,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:14,697 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 03:30:14,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:14,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494571803] [2024-11-28 03:30:14,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494571803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:14,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:14,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:14,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029639889] [2024-11-28 03:30:14,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:14,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:14,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:14,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:14,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:14,702 INFO L87 Difference]: Start difference. First operand 82 states and 115 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 03:30:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:14,752 INFO L93 Difference]: Finished difference Result 191 states and 282 transitions. [2024-11-28 03:30:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:14,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2024-11-28 03:30:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:14,755 INFO L225 Difference]: With dead ends: 191 [2024-11-28 03:30:14,755 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 03:30:14,755 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 03:30:14,756 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:14,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 111 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 03:30:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-11-28 03:30:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4453125) internal successors, (185), 128 states have internal predecessors, (185), 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 03:30:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 185 transitions. [2024-11-28 03:30:14,781 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 185 transitions. Word has length 37 [2024-11-28 03:30:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:14,782 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 185 transitions. [2024-11-28 03:30:14,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 03:30:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 185 transitions. [2024-11-28 03:30:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:30:14,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:14,783 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] [2024-11-28 03:30:14,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:30:14,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:14,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 420635792, now seen corresponding path program 1 times [2024-11-28 03:30:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048644434] [2024-11-28 03:30:14,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:15,164 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 03:30:15,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048644434] [2024-11-28 03:30:15,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048644434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:15,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:15,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:15,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916429549] [2024-11-28 03:30:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:15,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:15,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:15,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:15,166 INFO L87 Difference]: Start difference. First operand 129 states and 185 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 03:30:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:15,279 INFO L93 Difference]: Finished difference Result 238 states and 349 transitions. [2024-11-28 03:30:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2024-11-28 03:30:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:15,282 INFO L225 Difference]: With dead ends: 238 [2024-11-28 03:30:15,282 INFO L226 Difference]: Without dead ends: 131 [2024-11-28 03:30:15,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:30:15,283 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 36 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:15,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 197 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-28 03:30:15,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 129. [2024-11-28 03:30:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4296875) internal successors, (183), 128 states have internal predecessors, (183), 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 03:30:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2024-11-28 03:30:15,309 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 37 [2024-11-28 03:30:15,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:15,310 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2024-11-28 03:30:15,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 03:30:15,310 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2024-11-28 03:30:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:30:15,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:15,311 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] [2024-11-28 03:30:15,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:30:15,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:15,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash -259915559, now seen corresponding path program 1 times [2024-11-28 03:30:15,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580894176] [2024-11-28 03:30:15,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:15,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:15,738 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 03:30:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:15,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580894176] [2024-11-28 03:30:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580894176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:15,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:30:15,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848510671] [2024-11-28 03:30:15,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:30:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:15,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:30:15,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:30:15,742 INFO L87 Difference]: Start difference. First operand 129 states and 183 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 03:30:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:15,824 INFO L93 Difference]: Finished difference Result 137 states and 192 transitions. [2024-11-28 03:30:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:30:15,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 38 [2024-11-28 03:30:15,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:15,826 INFO L225 Difference]: With dead ends: 137 [2024-11-28 03:30:15,826 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:30:15,826 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:30:15,827 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:15,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 432 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:30:15,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2024-11-28 03:30:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4029850746268657) internal successors, (188), 134 states have internal predecessors, (188), 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 03:30:15,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 188 transitions. [2024-11-28 03:30:15,849 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 188 transitions. Word has length 38 [2024-11-28 03:30:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:15,851 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 188 transitions. [2024-11-28 03:30:15,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 03:30:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 188 transitions. [2024-11-28 03:30:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:30:15,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:15,856 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] [2024-11-28 03:30:15,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:30:15,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:15,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1886850160, now seen corresponding path program 1 times [2024-11-28 03:30:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:15,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906472521] [2024-11-28 03:30:15,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:15,970 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 03:30:15,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906472521] [2024-11-28 03:30:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906472521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:15,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906830787] [2024-11-28 03:30:15,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:15,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:15,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:15,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:15,973 INFO L87 Difference]: Start difference. First operand 135 states and 188 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:16,001 INFO L93 Difference]: Finished difference Result 262 states and 374 transitions. [2024-11-28 03:30:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:16,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-28 03:30:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:16,005 INFO L225 Difference]: With dead ends: 262 [2024-11-28 03:30:16,005 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 03:30:16,006 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 03:30:16,007 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:16,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 03:30:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2024-11-28 03:30:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.4093264248704662) internal successors, (272), 193 states have internal predecessors, (272), 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 03:30:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 272 transitions. [2024-11-28 03:30:16,033 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 272 transitions. Word has length 39 [2024-11-28 03:30:16,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:16,036 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 272 transitions. [2024-11-28 03:30:16,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 272 transitions. [2024-11-28 03:30:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:30:16,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:16,037 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] [2024-11-28 03:30:16,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:30:16,037 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:16,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 192648336, now seen corresponding path program 1 times [2024-11-28 03:30:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763663249] [2024-11-28 03:30:16,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:16,147 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 03:30:16,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763663249] [2024-11-28 03:30:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763663249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:16,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:16,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642871585] [2024-11-28 03:30:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:16,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:16,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:16,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:16,154 INFO L87 Difference]: Start difference. First operand 194 states and 272 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:16,202 INFO L93 Difference]: Finished difference Result 508 states and 724 transitions. [2024-11-28 03:30:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-28 03:30:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:16,205 INFO L225 Difference]: With dead ends: 508 [2024-11-28 03:30:16,205 INFO L226 Difference]: Without dead ends: 339 [2024-11-28 03:30:16,206 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 03:30:16,209 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:16,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 157 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-28 03:30:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2024-11-28 03:30:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3988095238095237) internal successors, (470), 336 states have internal predecessors, (470), 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 03:30:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 470 transitions. [2024-11-28 03:30:16,240 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 470 transitions. Word has length 39 [2024-11-28 03:30:16,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:16,240 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 470 transitions. [2024-11-28 03:30:16,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,241 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 470 transitions. [2024-11-28 03:30:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:30:16,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:16,244 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] [2024-11-28 03:30:16,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:30:16,245 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:16,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:16,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1973581200, now seen corresponding path program 1 times [2024-11-28 03:30:16,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:16,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560526249] [2024-11-28 03:30:16,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:16,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:16,325 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 03:30:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560526249] [2024-11-28 03:30:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560526249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920085679] [2024-11-28 03:30:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:16,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:16,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:16,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:16,330 INFO L87 Difference]: Start difference. First operand 337 states and 470 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:16,381 INFO L93 Difference]: Finished difference Result 913 states and 1276 transitions. [2024-11-28 03:30:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:16,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2024-11-28 03:30:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:16,385 INFO L225 Difference]: With dead ends: 913 [2024-11-28 03:30:16,385 INFO L226 Difference]: Without dead ends: 601 [2024-11-28 03:30:16,386 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 03:30:16,386 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:16,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 159 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-28 03:30:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2024-11-28 03:30:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.3678929765886287) internal successors, (818), 598 states have internal predecessors, (818), 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 03:30:16,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 818 transitions. [2024-11-28 03:30:16,416 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 818 transitions. Word has length 39 [2024-11-28 03:30:16,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:16,417 INFO L471 AbstractCegarLoop]: Abstraction has 599 states and 818 transitions. [2024-11-28 03:30:16,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 03:30:16,417 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 818 transitions. [2024-11-28 03:30:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:30:16,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:16,419 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:16,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:30:16,419 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:16,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2108144598, now seen corresponding path program 1 times [2024-11-28 03:30:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134367940] [2024-11-28 03:30:16,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:30:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134367940] [2024-11-28 03:30:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134367940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:16,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586259287] [2024-11-28 03:30:16,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:16,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:16,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:16,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:16,708 INFO L87 Difference]: Start difference. First operand 599 states and 818 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 03:30:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:16,913 INFO L93 Difference]: Finished difference Result 2299 states and 3162 transitions. [2024-11-28 03:30:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:16,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 55 [2024-11-28 03:30:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:16,924 INFO L225 Difference]: With dead ends: 2299 [2024-11-28 03:30:16,925 INFO L226 Difference]: Without dead ends: 1881 [2024-11-28 03:30:16,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:30:16,928 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 164 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:16,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 288 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:16,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2024-11-28 03:30:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1095. [2024-11-28 03:30:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1095 states, 1094 states have (on average 1.3656307129798904) internal successors, (1494), 1094 states have internal predecessors, (1494), 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 03:30:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1095 states to 1095 states and 1494 transitions. [2024-11-28 03:30:17,061 INFO L78 Accepts]: Start accepts. Automaton has 1095 states and 1494 transitions. Word has length 55 [2024-11-28 03:30:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:17,063 INFO L471 AbstractCegarLoop]: Abstraction has 1095 states and 1494 transitions. [2024-11-28 03:30:17,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 03:30:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1095 states and 1494 transitions. [2024-11-28 03:30:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:30:17,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:17,066 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:17,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:30:17,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:17,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:17,067 INFO L85 PathProgramCache]: Analyzing trace with hash -107324202, now seen corresponding path program 1 times [2024-11-28 03:30:17,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:17,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567501404] [2024-11-28 03:30:17,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:17,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:30:17,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567501404] [2024-11-28 03:30:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567501404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:17,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:17,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:17,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157823883] [2024-11-28 03:30:17,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:17,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:17,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:17,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:17,337 INFO L87 Difference]: Start difference. First operand 1095 states and 1494 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 03:30:17,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:17,561 INFO L93 Difference]: Finished difference Result 2871 states and 3946 transitions. [2024-11-28 03:30:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:17,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 55 [2024-11-28 03:30:17,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:17,573 INFO L225 Difference]: With dead ends: 2871 [2024-11-28 03:30:17,574 INFO L226 Difference]: Without dead ends: 2297 [2024-11-28 03:30:17,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:30:17,576 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 164 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:17,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 284 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-11-28 03:30:17,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1875. [2024-11-28 03:30:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1875 states, 1874 states have (on average 1.3628601921024546) internal successors, (2554), 1874 states have internal predecessors, (2554), 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 03:30:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2554 transitions. [2024-11-28 03:30:17,725 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2554 transitions. Word has length 55 [2024-11-28 03:30:17,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:17,725 INFO L471 AbstractCegarLoop]: Abstraction has 1875 states and 2554 transitions. [2024-11-28 03:30:17,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 03:30:17,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2554 transitions. [2024-11-28 03:30:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:30:17,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:17,727 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:17,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:30:17,728 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:17,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1673608662, now seen corresponding path program 1 times [2024-11-28 03:30:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872250381] [2024-11-28 03:30:17,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:17,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:30:17,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:17,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872250381] [2024-11-28 03:30:17,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872250381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:17,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:30:17,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152976366] [2024-11-28 03:30:17,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:17,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:30:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:17,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:30:17,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:30:17,924 INFO L87 Difference]: Start difference. First operand 1875 states and 2554 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 03:30:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:18,169 INFO L93 Difference]: Finished difference Result 3443 states and 4726 transitions. [2024-11-28 03:30:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:30:18,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 55 [2024-11-28 03:30:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:18,183 INFO L225 Difference]: With dead ends: 3443 [2024-11-28 03:30:18,184 INFO L226 Difference]: Without dead ends: 2869 [2024-11-28 03:30:18,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:30:18,189 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 170 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:18,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 286 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:30:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2024-11-28 03:30:18,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2447. [2024-11-28 03:30:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.3630417007358953) internal successors, (3334), 2446 states have internal predecessors, (3334), 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 03:30:18,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3334 transitions. [2024-11-28 03:30:18,371 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3334 transitions. Word has length 55 [2024-11-28 03:30:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:18,371 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 3334 transitions. [2024-11-28 03:30:18,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 03:30:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3334 transitions. [2024-11-28 03:30:18,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:30:18,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:18,373 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:18,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:30:18,374 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:18,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash 919127620, now seen corresponding path program 1 times [2024-11-28 03:30:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529110757] [2024-11-28 03:30:18,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:18,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529110757] [2024-11-28 03:30:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529110757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:18,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:18,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781734982] [2024-11-28 03:30:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:18,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:18,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:18,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:18,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:18,546 INFO L87 Difference]: Start difference. First operand 2447 states and 3334 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 03:30:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:18,676 INFO L93 Difference]: Finished difference Result 4871 states and 6644 transitions. [2024-11-28 03:30:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-28 03:30:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:18,687 INFO L225 Difference]: With dead ends: 4871 [2024-11-28 03:30:18,687 INFO L226 Difference]: Without dead ends: 2449 [2024-11-28 03:30:18,690 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 03:30:18,691 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:18,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 147 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2024-11-28 03:30:18,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2447. [2024-11-28 03:30:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2446 states have (on average 1.3426001635322977) internal successors, (3284), 2446 states have internal predecessors, (3284), 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 03:30:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3284 transitions. [2024-11-28 03:30:18,814 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3284 transitions. Word has length 56 [2024-11-28 03:30:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:18,814 INFO L471 AbstractCegarLoop]: Abstraction has 2447 states and 3284 transitions. [2024-11-28 03:30:18,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 03:30:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3284 transitions. [2024-11-28 03:30:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:30:18,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:18,815 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:18,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:30:18,816 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:18,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1408550898, now seen corresponding path program 1 times [2024-11-28 03:30:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301216981] [2024-11-28 03:30:18,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301216981] [2024-11-28 03:30:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301216981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550108519] [2024-11-28 03:30:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:18,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:18,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:18,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:18,933 INFO L87 Difference]: Start difference. First operand 2447 states and 3284 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 03:30:18,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:18,985 INFO L93 Difference]: Finished difference Result 3403 states and 4581 transitions. [2024-11-28 03:30:18,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:18,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2024-11-28 03:30:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:18,989 INFO L225 Difference]: With dead ends: 3403 [2024-11-28 03:30:18,989 INFO L226 Difference]: Without dead ends: 981 [2024-11-28 03:30:18,991 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 03:30:18,992 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:18,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 144 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-28 03:30:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 972. [2024-11-28 03:30:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.333676622039135) internal successors, (1295), 971 states have internal predecessors, (1295), 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 03:30:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1295 transitions. [2024-11-28 03:30:19,034 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1295 transitions. Word has length 57 [2024-11-28 03:30:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:19,035 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1295 transitions. [2024-11-28 03:30:19,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 03:30:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1295 transitions. [2024-11-28 03:30:19,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 03:30:19,036 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:19,036 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:19,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:30:19,037 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:19,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:19,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1062832502, now seen corresponding path program 1 times [2024-11-28 03:30:19,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:19,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922955079] [2024-11-28 03:30:19,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:19,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922955079] [2024-11-28 03:30:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922955079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:30:19,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:30:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:30:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280003171] [2024-11-28 03:30:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:30:19,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:30:19,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:19,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:30:19,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:30:19,142 INFO L87 Difference]: Start difference. First operand 972 states and 1295 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 03:30:19,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:19,176 INFO L93 Difference]: Finished difference Result 1444 states and 1927 transitions. [2024-11-28 03:30:19,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:30:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2024-11-28 03:30:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:19,180 INFO L225 Difference]: With dead ends: 1444 [2024-11-28 03:30:19,180 INFO L226 Difference]: Without dead ends: 506 [2024-11-28 03:30:19,183 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 03:30:19,184 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 25 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:19,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:30:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-28 03:30:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 504. [2024-11-28 03:30:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.3041749502982107) internal successors, (656), 503 states have internal predecessors, (656), 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 03:30:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 656 transitions. [2024-11-28 03:30:19,212 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 656 transitions. Word has length 58 [2024-11-28 03:30:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:19,212 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 656 transitions. [2024-11-28 03:30:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 03:30:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 656 transitions. [2024-11-28 03:30:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 03:30:19,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:19,214 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:19,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:30:19,214 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:19,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -207437016, now seen corresponding path program 1 times [2024-11-28 03:30:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342008075] [2024-11-28 03:30:19,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342008075] [2024-11-28 03:30:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342008075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:19,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893305795] [2024-11-28 03:30:19,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:19,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:19,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:19,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:30:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:20,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:30:20,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:30:20,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:30:20,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893305795] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:20,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-28 03:30:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213094023] [2024-11-28 03:30:20,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:20,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:30:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:20,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:30:20,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:30:20,847 INFO L87 Difference]: Start difference. First operand 504 states and 656 transitions. Second operand has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 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 03:30:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:22,504 INFO L93 Difference]: Finished difference Result 2617 states and 3382 transitions. [2024-11-28 03:30:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:30:22,504 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 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 60 [2024-11-28 03:30:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:22,514 INFO L225 Difference]: With dead ends: 2617 [2024-11-28 03:30:22,514 INFO L226 Difference]: Without dead ends: 2147 [2024-11-28 03:30:22,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:30:22,517 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 1164 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:22,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 428 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:30:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-28 03:30:22,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2011. [2024-11-28 03:30:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2010 states have (on average 1.2467661691542289) internal successors, (2506), 2010 states have internal predecessors, (2506), 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 03:30:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2506 transitions. [2024-11-28 03:30:22,629 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2506 transitions. Word has length 60 [2024-11-28 03:30:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:22,630 INFO L471 AbstractCegarLoop]: Abstraction has 2011 states and 2506 transitions. [2024-11-28 03:30:22,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.125) internal successors, (162), 16 states have internal predecessors, (162), 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 03:30:22,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2506 transitions. [2024-11-28 03:30:22,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:30:22,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:22,631 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:22,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:22,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:30:22,836 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:22,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1137688292, now seen corresponding path program 1 times [2024-11-28 03:30:22,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:22,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187298133] [2024-11-28 03:30:22,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:22,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:23,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187298133] [2024-11-28 03:30:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187298133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:23,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739018268] [2024-11-28 03:30:23,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:23,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:23,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:23,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:23,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:30:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:23,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:30:23,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:24,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739018268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:26,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2024-11-28 03:30:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477311826] [2024-11-28 03:30:26,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:26,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:30:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:26,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:30:26,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:30:26,074 INFO L87 Difference]: Start difference. First operand 2011 states and 2506 transitions. Second operand has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 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 03:30:30,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:30,219 INFO L93 Difference]: Finished difference Result 9361 states and 11657 transitions. [2024-11-28 03:30:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-28 03:30:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 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 61 [2024-11-28 03:30:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:30,245 INFO L225 Difference]: With dead ends: 9361 [2024-11-28 03:30:30,245 INFO L226 Difference]: Without dead ends: 7556 [2024-11-28 03:30:30,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=900, Invalid=3930, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 03:30:30,252 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 1473 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:30,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 843 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:30:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7556 states. [2024-11-28 03:30:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7556 to 6504. [2024-11-28 03:30:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6503 states have (on average 1.2123635245271414) internal successors, (7884), 6503 states have internal predecessors, (7884), 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 03:30:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 7884 transitions. [2024-11-28 03:30:30,588 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 7884 transitions. Word has length 61 [2024-11-28 03:30:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:30,588 INFO L471 AbstractCegarLoop]: Abstraction has 6504 states and 7884 transitions. [2024-11-28 03:30:30,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.6) internal successors, (168), 30 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 03:30:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 7884 transitions. [2024-11-28 03:30:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 03:30:30,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:30,590 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:30,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:30,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:30:30,791 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:30,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:30,792 INFO L85 PathProgramCache]: Analyzing trace with hash 580574178, now seen corresponding path program 1 times [2024-11-28 03:30:30,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:30,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121844861] [2024-11-28 03:30:30,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:30,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:31,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:31,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121844861] [2024-11-28 03:30:31,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121844861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:31,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877161584] [2024-11-28 03:30:31,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:31,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:31,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:31,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:31,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:30:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:31,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:30:31,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:36,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:30:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:40,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877161584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:30:40,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:30:40,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 20] total 47 [2024-11-28 03:30:40,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739797770] [2024-11-28 03:30:40,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:30:40,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:30:40,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:30:40,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:30:40,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:30:40,223 INFO L87 Difference]: Start difference. First operand 6504 states and 7884 transitions. Second operand has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 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 03:30:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:30:50,977 INFO L93 Difference]: Finished difference Result 16370 states and 20078 transitions. [2024-11-28 03:30:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 03:30:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 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 62 [2024-11-28 03:30:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:30:51,016 INFO L225 Difference]: With dead ends: 16370 [2024-11-28 03:30:51,016 INFO L226 Difference]: Without dead ends: 13216 [2024-11-28 03:30:51,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5267 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3282, Invalid=13748, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 03:30:51,028 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 4041 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4041 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:30:51,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4041 Valid, 1336 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:30:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13216 states. [2024-11-28 03:30:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13216 to 4900. [2024-11-28 03:30:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4899 states have (on average 1.2120840987956727) internal successors, (5938), 4899 states have internal predecessors, (5938), 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 03:30:51,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 5938 transitions. [2024-11-28 03:30:51,541 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 5938 transitions. Word has length 62 [2024-11-28 03:30:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:30:51,541 INFO L471 AbstractCegarLoop]: Abstraction has 4900 states and 5938 transitions. [2024-11-28 03:30:51,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 47 states have internal predecessors, (166), 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 03:30:51,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 5938 transitions. [2024-11-28 03:30:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 03:30:51,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:30:51,544 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 03:30:51,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:30:51,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:30:51,748 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:30:51,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:30:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2083404890, now seen corresponding path program 1 times [2024-11-28 03:30:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:30:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972303858] [2024-11-28 03:30:51,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:30:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:53,012 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:30:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972303858] [2024-11-28 03:30:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972303858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:30:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199801520] [2024-11-28 03:30:53,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:30:53,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:30:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:30:53,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:30:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:30:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:30:53,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:30:53,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:30:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:30:56,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:01,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199801520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:01,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:01,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23, 18] total 49 [2024-11-28 03:31:01,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896522119] [2024-11-28 03:31:01,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:01,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 03:31:01,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:01,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 03:31:01,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=2037, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:31:01,518 INFO L87 Difference]: Start difference. First operand 4900 states and 5938 transitions. Second operand has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 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 03:31:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:19,782 INFO L93 Difference]: Finished difference Result 7937 states and 9703 transitions. [2024-11-28 03:31:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-28 03:31:19,782 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 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 63 [2024-11-28 03:31:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:19,794 INFO L225 Difference]: With dead ends: 7937 [2024-11-28 03:31:19,794 INFO L226 Difference]: Without dead ends: 4910 [2024-11-28 03:31:19,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4160 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=2989, Invalid=12511, Unknown=0, NotChecked=0, Total=15500 [2024-11-28 03:31:19,802 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1983 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:19,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 1289 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:31:19,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4910 states. [2024-11-28 03:31:20,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4910 to 3450. [2024-11-28 03:31:20,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3450 states, 3449 states have (on average 1.2067265874166424) internal successors, (4162), 3449 states have internal predecessors, (4162), 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 03:31:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3450 states to 3450 states and 4162 transitions. [2024-11-28 03:31:20,077 INFO L78 Accepts]: Start accepts. Automaton has 3450 states and 4162 transitions. Word has length 63 [2024-11-28 03:31:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:20,077 INFO L471 AbstractCegarLoop]: Abstraction has 3450 states and 4162 transitions. [2024-11-28 03:31:20,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4693877551020407) internal successors, (170), 49 states have internal predecessors, (170), 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 03:31:20,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3450 states and 4162 transitions. [2024-11-28 03:31:20,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:31:20,080 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:20,080 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:31:20,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:31:20,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:20,281 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:20,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -666623078, now seen corresponding path program 1 times [2024-11-28 03:31:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135504630] [2024-11-28 03:31:20,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 40 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:21,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:21,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135504630] [2024-11-28 03:31:21,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135504630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574367274] [2024-11-28 03:31:21,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:21,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:21,470 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:21,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:31:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:21,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 03:31:21,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:25,141 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:25,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574367274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:31,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 23] total 57 [2024-11-28 03:31:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029694369] [2024-11-28 03:31:31,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:31,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 03:31:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:31,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 03:31:31,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2836, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:31:31,068 INFO L87 Difference]: Start difference. First operand 3450 states and 4162 transitions. Second operand has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 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 03:34:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:06,708 INFO L93 Difference]: Finished difference Result 13258 states and 16259 transitions. [2024-11-28 03:34:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 311 states. [2024-11-28 03:34:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 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 104 [2024-11-28 03:34:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:06,729 INFO L225 Difference]: With dead ends: 13258 [2024-11-28 03:34:06,729 INFO L226 Difference]: Without dead ends: 10876 [2024-11-28 03:34:06,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 364 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53282 ImplicationChecksByTransitivity, 150.7s TimeCoverageRelationStatistics Valid=20080, Invalid=113510, Unknown=0, NotChecked=0, Total=133590 [2024-11-28 03:34:06,746 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 4219 mSDsluCounter, 5176 mSDsCounter, 0 mSdLazyCounter, 5351 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 5542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 5351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:06,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4219 Valid, 5358 Invalid, 5542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 5351 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 03:34:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10876 states. [2024-11-28 03:34:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10876 to 7090. [2024-11-28 03:34:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.2107490478205671) internal successors, (8583), 7089 states have internal predecessors, (8583), 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 03:34:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 8583 transitions. [2024-11-28 03:34:07,296 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 8583 transitions. Word has length 104 [2024-11-28 03:34:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:07,297 INFO L471 AbstractCegarLoop]: Abstraction has 7090 states and 8583 transitions. [2024-11-28 03:34:07,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.12280701754386) internal successors, (292), 57 states have internal predecessors, (292), 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 03:34:07,298 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 8583 transitions. [2024-11-28 03:34:07,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:34:07,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:07,301 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:34:07,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:34:07,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:07,502 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:07,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:07,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1499010346, now seen corresponding path program 1 times [2024-11-28 03:34:07,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284420418] [2024-11-28 03:34:07,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:07,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284420418] [2024-11-28 03:34:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284420418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964099457] [2024-11-28 03:34:08,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:08,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:08,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:08,350 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:08,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:34:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:08,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:34:08,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:11,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964099457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:15,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 40 [2024-11-28 03:34:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385868164] [2024-11-28 03:34:15,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:15,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:34:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:15,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:34:15,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1416, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:34:15,110 INFO L87 Difference]: Start difference. First operand 7090 states and 8583 transitions. Second operand has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 states have internal predecessors, (244), 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 03:34:19,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:34:19,670 INFO L93 Difference]: Finished difference Result 13229 states and 16215 transitions. [2024-11-28 03:34:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 03:34:19,670 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 states have internal predecessors, (244), 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 104 [2024-11-28 03:34:19,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:34:19,690 INFO L225 Difference]: With dead ends: 13229 [2024-11-28 03:34:19,690 INFO L226 Difference]: Without dead ends: 9324 [2024-11-28 03:34:19,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1619 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1233, Invalid=5409, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 03:34:19,695 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 1968 mSDsluCounter, 1890 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:34:19,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 2025 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:34:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2024-11-28 03:34:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 7090. [2024-11-28 03:34:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 7089 states have (on average 1.201015658061786) internal successors, (8514), 7089 states have internal predecessors, (8514), 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 03:34:20,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 8514 transitions. [2024-11-28 03:34:20,198 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 8514 transitions. Word has length 104 [2024-11-28 03:34:20,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:34:20,198 INFO L471 AbstractCegarLoop]: Abstraction has 7090 states and 8514 transitions. [2024-11-28 03:34:20,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.951219512195122) internal successors, (244), 40 states have internal predecessors, (244), 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 03:34:20,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 8514 transitions. [2024-11-28 03:34:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:34:20,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:34:20,200 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:34:20,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:34:20,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:34:20,401 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:34:20,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:34:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2107819364, now seen corresponding path program 1 times [2024-11-28 03:34:20,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:34:20,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532151778] [2024-11-28 03:34:20,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:34:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:34:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532151778] [2024-11-28 03:34:22,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532151778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:34:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032240621] [2024-11-28 03:34:22,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:34:22,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:34:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:34:22,114 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:34:22,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:34:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:34:22,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:34:22,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:34:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:25,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:34:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:34:29,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032240621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:34:29,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:34:29,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 58 [2024-11-28 03:34:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452755402] [2024-11-28 03:34:29,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:34:29,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 03:34:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:34:29,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 03:34:29,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3064, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 03:34:29,328 INFO L87 Difference]: Start difference. First operand 7090 states and 8514 transitions. Second operand has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 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 03:35:14,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:14,130 INFO L93 Difference]: Finished difference Result 13559 states and 16416 transitions. [2024-11-28 03:35:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2024-11-28 03:35:14,130 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 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 104 [2024-11-28 03:35:14,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:14,147 INFO L225 Difference]: With dead ends: 13559 [2024-11-28 03:35:14,147 INFO L226 Difference]: Without dead ends: 11507 [2024-11-28 03:35:14,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16499 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=7113, Invalid=45099, Unknown=0, NotChecked=0, Total=52212 [2024-11-28 03:35:14,157 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 6168 mSDsluCounter, 5660 mSDsCounter, 0 mSdLazyCounter, 4590 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6168 SdHoareTripleChecker+Valid, 5885 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 4590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:14,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6168 Valid, 5885 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 4590 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-28 03:35:14,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11507 states. [2024-11-28 03:35:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11507 to 8264. [2024-11-28 03:35:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8264 states, 8263 states have (on average 1.1988381943604018) internal successors, (9906), 8263 states have internal predecessors, (9906), 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 03:35:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8264 states to 8264 states and 9906 transitions. [2024-11-28 03:35:15,119 INFO L78 Accepts]: Start accepts. Automaton has 8264 states and 9906 transitions. Word has length 104 [2024-11-28 03:35:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:15,120 INFO L471 AbstractCegarLoop]: Abstraction has 8264 states and 9906 transitions. [2024-11-28 03:35:15,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.0344827586206895) internal successors, (292), 58 states have internal predecessors, (292), 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 03:35:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 8264 states and 9906 transitions. [2024-11-28 03:35:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:35:15,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:15,122 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:35:15,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:35:15,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:35:15,327 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:15,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1524142808, now seen corresponding path program 1 times [2024-11-28 03:35:15,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:15,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054881647] [2024-11-28 03:35:15,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:15,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:16,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054881647] [2024-11-28 03:35:16,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054881647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:16,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825736565] [2024-11-28 03:35:16,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:16,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:16,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:16,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:35:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:16,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 03:35:16,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:19,964 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:19,964 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:35:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:24,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825736565] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:35:24,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:35:24,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 20] total 60 [2024-11-28 03:35:24,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028680074] [2024-11-28 03:35:24,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:35:24,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-28 03:35:24,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:35:24,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-28 03:35:24,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3179, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:35:24,743 INFO L87 Difference]: Start difference. First operand 8264 states and 9906 transitions. Second operand has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 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 03:35:47,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:35:47,170 INFO L93 Difference]: Finished difference Result 16128 states and 19493 transitions. [2024-11-28 03:35:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-28 03:35:47,171 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 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 105 [2024-11-28 03:35:47,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:35:47,183 INFO L225 Difference]: With dead ends: 16128 [2024-11-28 03:35:47,183 INFO L226 Difference]: Without dead ends: 13219 [2024-11-28 03:35:47,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7184 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=3928, Invalid=21512, Unknown=0, NotChecked=0, Total=25440 [2024-11-28 03:35:47,188 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 2848 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2848 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:35:47,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2848 Valid, 2905 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:35:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2024-11-28 03:35:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 11307. [2024-11-28 03:35:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 1.201574385282151) internal successors, (13585), 11306 states have internal predecessors, (13585), 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 03:35:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 13585 transitions. [2024-11-28 03:35:48,859 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 13585 transitions. Word has length 105 [2024-11-28 03:35:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:35:48,859 INFO L471 AbstractCegarLoop]: Abstraction has 11307 states and 13585 transitions. [2024-11-28 03:35:48,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.6) internal successors, (276), 60 states have internal predecessors, (276), 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 03:35:48,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 13585 transitions. [2024-11-28 03:35:48,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 03:35:48,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:35:48,862 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 03:35:48,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:35:49,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:49,063 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:35:49,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:35:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1399271496, now seen corresponding path program 1 times [2024-11-28 03:35:49,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:35:49,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451304722] [2024-11-28 03:35:49,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:49,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:35:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:50,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:35:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451304722] [2024-11-28 03:35:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451304722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:35:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077460485] [2024-11-28 03:35:50,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:35:50,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:35:50,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:35:50,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:35:50,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:35:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:35:50,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 03:35:50,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:35:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 40 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:35:54,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:36:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 27 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:04,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077460485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:36:04,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:36:04,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 27] total 69 [2024-11-28 03:36:04,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404866469] [2024-11-28 03:36:04,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:36:04,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-28 03:36:04,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:04,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-28 03:36:04,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=4245, Unknown=0, NotChecked=0, Total=4692 [2024-11-28 03:36:04,648 INFO L87 Difference]: Start difference. First operand 11307 states and 13585 transitions. Second operand has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 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 03:38:39,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:39,474 INFO L93 Difference]: Finished difference Result 33526 states and 40317 transitions. [2024-11-28 03:38:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 330 states. [2024-11-28 03:38:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 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 105 [2024-11-28 03:38:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:39,500 INFO L225 Difference]: With dead ends: 33526 [2024-11-28 03:38:39,501 INFO L226 Difference]: Without dead ends: 23128 [2024-11-28 03:38:39,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62073 ImplicationChecksByTransitivity, 146.9s TimeCoverageRelationStatistics Valid=21867, Invalid=130623, Unknown=0, NotChecked=0, Total=152490 [2024-11-28 03:38:39,513 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 6440 mSDsluCounter, 6699 mSDsCounter, 0 mSdLazyCounter, 7326 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6440 SdHoareTripleChecker+Valid, 6942 SdHoareTripleChecker+Invalid, 7687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 7326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:39,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6440 Valid, 6942 Invalid, 7687 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [361 Valid, 7326 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-28 03:38:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23128 states. [2024-11-28 03:38:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23128 to 11431. [2024-11-28 03:38:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11430 states have (on average 1.1976377952755906) internal successors, (13689), 11430 states have internal predecessors, (13689), 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 03:38:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 13689 transitions. [2024-11-28 03:38:40,794 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 13689 transitions. Word has length 105 [2024-11-28 03:38:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:40,794 INFO L471 AbstractCegarLoop]: Abstraction has 11431 states and 13689 transitions. [2024-11-28 03:38:40,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.231884057971015) internal successors, (292), 69 states have internal predecessors, (292), 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 03:38:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 13689 transitions. [2024-11-28 03:38:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 03:38:40,797 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:40,797 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-28 03:38:40,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:38:41,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:38:41,001 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:41,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:41,002 INFO L85 PathProgramCache]: Analyzing trace with hash 947963116, now seen corresponding path program 1 times [2024-11-28 03:38:41,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:41,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743450885] [2024-11-28 03:38:41,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:41,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:41,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743450885] [2024-11-28 03:38:41,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743450885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:41,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146280986] [2024-11-28 03:38:41,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:41,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:41,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:41,683 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:41,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:38:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:41,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:38:41,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:43,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:38:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:38:47,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146280986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:38:47,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:38:47,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 13] total 40 [2024-11-28 03:38:47,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287580928] [2024-11-28 03:38:47,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:38:47,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:38:47,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:47,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:38:47,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:38:47,710 INFO L87 Difference]: Start difference. First operand 11431 states and 13689 transitions. Second operand has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 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 03:38:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:57,028 INFO L93 Difference]: Finished difference Result 28798 states and 34542 transitions. [2024-11-28 03:38:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 03:38:57,028 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 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 107 [2024-11-28 03:38:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:57,044 INFO L225 Difference]: With dead ends: 28798 [2024-11-28 03:38:57,044 INFO L226 Difference]: Without dead ends: 18011 [2024-11-28 03:38:57,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1534 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1944, Invalid=6798, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 03:38:57,051 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 1593 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:57,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1708 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1657 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:38:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18011 states. [2024-11-28 03:38:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18011 to 15571. [2024-11-28 03:38:59,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 1.1814386640976235) internal successors, (18395), 15570 states have internal predecessors, (18395), 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 03:38:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 18395 transitions. [2024-11-28 03:38:59,217 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 18395 transitions. Word has length 107 [2024-11-28 03:38:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:59,217 INFO L471 AbstractCegarLoop]: Abstraction has 15571 states and 18395 transitions. [2024-11-28 03:38:59,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.25) internal successors, (290), 40 states have internal predecessors, (290), 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 03:38:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 18395 transitions. [2024-11-28 03:38:59,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:38:59,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:59,223 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:38:59,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:38:59,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:38:59,427 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:59,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:59,428 INFO L85 PathProgramCache]: Analyzing trace with hash -784175164, now seen corresponding path program 1 times [2024-11-28 03:38:59,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:59,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780387356] [2024-11-28 03:38:59,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:59,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:39:00,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:00,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780387356] [2024-11-28 03:39:00,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780387356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:00,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107018021] [2024-11-28 03:39:00,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:00,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:00,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:39:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:00,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:39:00,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:39:03,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 147 proven. 76 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 03:39:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107018021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:11,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:11,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 24, 24] total 55 [2024-11-28 03:39:11,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203246330] [2024-11-28 03:39:11,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:11,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 03:39:11,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:11,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 03:39:11,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=2683, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 03:39:11,160 INFO L87 Difference]: Start difference. First operand 15571 states and 18395 transitions. Second operand has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 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 03:39:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:23,262 INFO L93 Difference]: Finished difference Result 27449 states and 32523 transitions. [2024-11-28 03:39:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-28 03:39:23,262 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 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 144 [2024-11-28 03:39:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:23,278 INFO L225 Difference]: With dead ends: 27449 [2024-11-28 03:39:23,278 INFO L226 Difference]: Without dead ends: 17180 [2024-11-28 03:39:23,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7825 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=4674, Invalid=21408, Unknown=0, NotChecked=0, Total=26082 [2024-11-28 03:39:23,285 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 2126 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 2563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:23,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 3100 Invalid, 2563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:39:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17180 states. [2024-11-28 03:39:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17180 to 13754. [2024-11-28 03:39:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13754 states, 13753 states have (on average 1.1717443466879953) internal successors, (16115), 13753 states have internal predecessors, (16115), 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 03:39:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13754 states to 13754 states and 16115 transitions. [2024-11-28 03:39:25,159 INFO L78 Accepts]: Start accepts. Automaton has 13754 states and 16115 transitions. Word has length 144 [2024-11-28 03:39:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:25,159 INFO L471 AbstractCegarLoop]: Abstraction has 13754 states and 16115 transitions. [2024-11-28 03:39:25,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.428571428571429) internal successors, (304), 55 states have internal predecessors, (304), 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 03:39:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 13754 states and 16115 transitions. [2024-11-28 03:39:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:39:25,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:25,165 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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 03:39:25,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:39:25,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:39:25,365 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:25,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash 513182432, now seen corresponding path program 1 times [2024-11-28 03:39:25,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:25,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092161461] [2024-11-28 03:39:25,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:25,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 144 proven. 77 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:39:26,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092161461] [2024-11-28 03:39:26,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092161461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:26,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675541172] [2024-11-28 03:39:26,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:26,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:26,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:26,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:26,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:39:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:27,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:39:27,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 81 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:31,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:39:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 81 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:39:37,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675541172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:39:37,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:39:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 22] total 64 [2024-11-28 03:39:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59799548] [2024-11-28 03:39:37,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:39:37,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 03:39:37,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:37,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 03:39:37,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3643, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:39:37,405 INFO L87 Difference]: Start difference. First operand 13754 states and 16115 transitions. Second operand has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 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 03:40:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:01,906 INFO L93 Difference]: Finished difference Result 28907 states and 33992 transitions. [2024-11-28 03:40:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-28 03:40:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 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 145 [2024-11-28 03:40:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:01,921 INFO L225 Difference]: With dead ends: 28907 [2024-11-28 03:40:01,921 INFO L226 Difference]: Without dead ends: 20382 [2024-11-28 03:40:01,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9007 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=5107, Invalid=24995, Unknown=0, NotChecked=0, Total=30102 [2024-11-28 03:40:01,930 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 4047 mSDsluCounter, 4014 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4047 SdHoareTripleChecker+Valid, 4178 SdHoareTripleChecker+Invalid, 3734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:01,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4047 Valid, 4178 Invalid, 3734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 03:40:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20382 states. [2024-11-28 03:40:03,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20382 to 12734. [2024-11-28 03:40:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12733 states have (on average 1.167910154716092) internal successors, (14871), 12733 states have internal predecessors, (14871), 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 03:40:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 14871 transitions. [2024-11-28 03:40:03,922 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 14871 transitions. Word has length 145 [2024-11-28 03:40:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:03,923 INFO L471 AbstractCegarLoop]: Abstraction has 12734 states and 14871 transitions. [2024-11-28 03:40:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.953125) internal successors, (381), 64 states have internal predecessors, (381), 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 03:40:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 14871 transitions. [2024-11-28 03:40:03,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:40:03,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:03,927 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:40:03,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:04,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:40:04,127 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:04,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1179368566, now seen corresponding path program 2 times [2024-11-28 03:40:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726172560] [2024-11-28 03:40:04,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:04,197 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:04,198 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 34 proven. 205 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:40:04,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726172560] [2024-11-28 03:40:04,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726172560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:04,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332548080] [2024-11-28 03:40:04,722 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:40:04,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:04,726 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:04,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:40:04,939 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:40:04,939 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:40:04,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:40:04,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 37 proven. 207 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:40:05,461 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 155 proven. 96 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:40:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332548080] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:06,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 12] total 23 [2024-11-28 03:40:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416092790] [2024-11-28 03:40:06,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:06,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:40:06,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:06,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:40:06,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:40:06,471 INFO L87 Difference]: Start difference. First operand 12734 states and 14871 transitions. Second operand has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 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 03:40:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:10,296 INFO L93 Difference]: Finished difference Result 34057 states and 40185 transitions. [2024-11-28 03:40:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:40:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 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 147 [2024-11-28 03:40:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:10,314 INFO L225 Difference]: With dead ends: 34057 [2024-11-28 03:40:10,314 INFO L226 Difference]: Without dead ends: 21926 [2024-11-28 03:40:10,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:40:10,320 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 472 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:10,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1482 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:40:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21926 states. [2024-11-28 03:40:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21926 to 20981. [2024-11-28 03:40:13,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20981 states, 20980 states have (on average 1.1295996186844615) internal successors, (23699), 20980 states have internal predecessors, (23699), 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 03:40:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20981 states to 20981 states and 23699 transitions. [2024-11-28 03:40:13,721 INFO L78 Accepts]: Start accepts. Automaton has 20981 states and 23699 transitions. Word has length 147 [2024-11-28 03:40:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:13,722 INFO L471 AbstractCegarLoop]: Abstraction has 20981 states and 23699 transitions. [2024-11-28 03:40:13,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.652173913043478) internal successors, (337), 23 states have internal predecessors, (337), 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 03:40:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 20981 states and 23699 transitions. [2024-11-28 03:40:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:40:13,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:13,724 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-28 03:40:13,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:13,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:40:13,925 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:13,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash -360939578, now seen corresponding path program 1 times [2024-11-28 03:40:13,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:13,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941672267] [2024-11-28 03:40:13,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:13,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:15,138 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:15,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941672267] [2024-11-28 03:40:15,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941672267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:15,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016969357] [2024-11-28 03:40:15,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:15,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:15,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:15,140 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:15,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:40:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:15,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:40:15,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:20,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 69 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:28,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016969357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:40:28,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:40:28,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 30] total 77 [2024-11-28 03:40:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765695138] [2024-11-28 03:40:28,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:28,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-28 03:40:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:28,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-28 03:40:28,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=5145, Unknown=0, NotChecked=0, Total=5852 [2024-11-28 03:40:28,192 INFO L87 Difference]: Start difference. First operand 20981 states and 23699 transitions. Second operand has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 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 03:41:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:04,138 INFO L93 Difference]: Finished difference Result 27960 states and 31552 transitions. [2024-11-28 03:41:04,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-11-28 03:41:04,139 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 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 147 [2024-11-28 03:41:04,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:04,154 INFO L225 Difference]: With dead ends: 27960 [2024-11-28 03:41:04,154 INFO L226 Difference]: Without dead ends: 23994 [2024-11-28 03:41:04,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 237 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15917 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=9265, Invalid=37175, Unknown=0, NotChecked=0, Total=46440 [2024-11-28 03:41:04,159 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 2960 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2960 SdHoareTripleChecker+Valid, 3771 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:04,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2960 Valid, 3771 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3641 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:41:04,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23994 states. [2024-11-28 03:41:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23994 to 21640. [2024-11-28 03:41:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21640 states, 21639 states have (on average 1.1284717408383012) internal successors, (24419), 21639 states have internal predecessors, (24419), 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 03:41:07,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21640 states to 21640 states and 24419 transitions. [2024-11-28 03:41:07,458 INFO L78 Accepts]: Start accepts. Automaton has 21640 states and 24419 transitions. Word has length 147 [2024-11-28 03:41:07,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:07,458 INFO L471 AbstractCegarLoop]: Abstraction has 21640 states and 24419 transitions. [2024-11-28 03:41:07,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.025974025974026) internal successors, (387), 77 states have internal predecessors, (387), 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 03:41:07,459 INFO L276 IsEmpty]: Start isEmpty. Operand 21640 states and 24419 transitions. [2024-11-28 03:41:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:41:07,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:07,461 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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] [2024-11-28 03:41:07,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:41:07,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:41:07,661 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:07,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:07,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1308452922, now seen corresponding path program 1 times [2024-11-28 03:41:07,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:07,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78233939] [2024-11-28 03:41:07,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:09,345 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:09,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:09,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78233939] [2024-11-28 03:41:09,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78233939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:09,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691582139] [2024-11-28 03:41:09,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:09,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:09,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:09,348 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:09,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e1cd46b-010d-4469-a5c5-c7266abf0061/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:41:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:09,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 03:41:09,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:12,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 37 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691582139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:41:19,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:41:19,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 21] total 67 [2024-11-28 03:41:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477966309] [2024-11-28 03:41:19,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:19,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-28 03:41:19,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:19,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-28 03:41:19,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=4109, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 03:41:19,073 INFO L87 Difference]: Start difference. First operand 21640 states and 24419 transitions. Second operand has 67 states, 67 states have (on average 5.895522388059701) internal successors, (395), 67 states have internal predecessors, (395), 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)