./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC --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 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:20:34,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:20:34,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:20:34,546 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:20:34,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:20:34,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:20:34,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:20:34,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:20:34,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:20:34,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:20:34,598 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:20:34,598 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:20:34,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:20:34,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:20:34,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:20:34,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:20:34,599 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:20:34,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:20:34,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:20:34,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:20:34,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:20:34,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:20:34,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:20:34,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:20:34,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:34,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:34,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:34,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:34,603 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:20:34,603 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:34,603 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:34,604 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:20:34,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:20:34,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:20:34,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:20:34,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:20:34,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:20:34,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:20:34,605 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_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC 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 -> 92be10af768295be2ee9c176bac2a7de85c1afeb202e4b441d20022190d8e93f [2024-11-24 00:20:34,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:20:34,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:20:34,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:20:34,998 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:20:34,999 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:20:35,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2024-11-24 00:20:38,254 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/data/6766bdce4/2ef399c6dc824d259ed587a1a0d3f96b/FLAG5b67e2605 [2024-11-24 00:20:38,681 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:20:38,687 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c [2024-11-24 00:20:38,717 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/data/6766bdce4/2ef399c6dc824d259ed587a1a0d3f96b/FLAG5b67e2605 [2024-11-24 00:20:38,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/data/6766bdce4/2ef399c6dc824d259ed587a1a0d3f96b [2024-11-24 00:20:38,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:20:38,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:20:38,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:38,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:20:38,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:20:38,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:38" (1/1) ... [2024-11-24 00:20:38,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6105c26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:38, skipping insertion in model container [2024-11-24 00:20:38,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:38" (1/1) ... [2024-11-24 00:20:38,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:20:39,103 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_2e45d5a4-13a7-4e18-bcd6-ee708844f052/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2024-11-24 00:20:39,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:39,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:20:39,164 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_2e45d5a4-13a7-4e18-bcd6-ee708844f052/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.ufo.UNBOUNDED.pals.c[6043,6056] [2024-11-24 00:20:39,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:39,184 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:20:39,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39 WrapperNode [2024-11-24 00:20:39,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:39,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:39,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:20:39,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:20:39,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,208 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,237 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 221 [2024-11-24 00:20:39,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:39,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:20:39,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:20:39,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:20:39,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,264 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]. [2024-11-24 00:20:39,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,270 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:20:39,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:20:39,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:20:39,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:20:39,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (1/1) ... [2024-11-24 00:20:39,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:39,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:39,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:20:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:20:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:20:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:20:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:20:39,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:20:39,480 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:20:39,483 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:20:40,065 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-24 00:20:40,065 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:20:40,083 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:20:40,086 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:20:40,086 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:40 BoogieIcfgContainer [2024-11-24 00:20:40,086 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:20:40,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:20:40,090 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:20:40,097 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:20:40,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:20:38" (1/3) ... [2024-11-24 00:20:40,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab7d251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:40, skipping insertion in model container [2024-11-24 00:20:40,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:39" (2/3) ... [2024-11-24 00:20:40,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab7d251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:40, skipping insertion in model container [2024-11-24 00:20:40,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:40" (3/3) ... [2024-11-24 00:20:40,104 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c [2024-11-24 00:20:40,126 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:20:40,130 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c that has 1 procedures, 58 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:20:40,227 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:20:40,247 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;@5b2661fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:20:40,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:20:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 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) [2024-11-24 00:20:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 00:20:40,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:40,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:40,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:40,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:40,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1507300432, now seen corresponding path program 1 times [2024-11-24 00:20:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:40,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258766241] [2024-11-24 00:20:40,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:40,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:40,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258766241] [2024-11-24 00:20:40,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258766241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:40,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:40,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:20:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021656547] [2024-11-24 00:20:40,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:40,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:20:40,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:40,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:20:40,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:20:40,670 INFO L87 Difference]: Start difference. First operand has 58 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 57 states have internal predecessors, (95), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-24 00:20:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:40,751 INFO L93 Difference]: Finished difference Result 91 states and 149 transitions. [2024-11-24 00:20:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:20:40,753 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2024-11-24 00:20:40,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:40,765 INFO L225 Difference]: With dead ends: 91 [2024-11-24 00:20:40,765 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 00:20:40,770 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 [2024-11-24 00:20:40,774 INFO L435 NwaCegarLoop]: 88 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, 88 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 [2024-11-24 00:20:40,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 00:20:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-24 00:20:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 53 states have internal predecessors, (88), 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) [2024-11-24 00:20:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 88 transitions. [2024-11-24 00:20:40,832 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 88 transitions. Word has length 19 [2024-11-24 00:20:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:40,834 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 88 transitions. [2024-11-24 00:20:40,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-11-24 00:20:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 88 transitions. [2024-11-24 00:20:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-24 00:20:40,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:40,837 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:40,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:20:40,839 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:40,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 496183182, now seen corresponding path program 1 times [2024-11-24 00:20:40,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:40,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331952479] [2024-11-24 00:20:40,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:40,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:41,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:41,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331952479] [2024-11-24 00:20:41,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331952479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:41,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:41,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:41,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566371970] [2024-11-24 00:20:41,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:41,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:41,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:41,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:41,239 INFO L87 Difference]: Start difference. First operand 54 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-24 00:20:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:41,343 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2024-11-24 00:20:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:41,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2024-11-24 00:20:41,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:41,345 INFO L225 Difference]: With dead ends: 90 [2024-11-24 00:20:41,345 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 00:20:41,345 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 [2024-11-24 00:20:41,346 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:41,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 00:20:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-24 00:20:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 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) [2024-11-24 00:20:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-24 00:20:41,359 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 19 [2024-11-24 00:20:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:41,360 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-24 00:20:41,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-24 00:20:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-24 00:20:41,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-24 00:20:41,362 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:41,362 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] [2024-11-24 00:20:41,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:20:41,362 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:41,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2010748053, now seen corresponding path program 1 times [2024-11-24 00:20:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426416496] [2024-11-24 00:20:41,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:41,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:41,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426416496] [2024-11-24 00:20:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426416496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333808205] [2024-11-24 00:20:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:41,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:41,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:41,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:41,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:41,618 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-24 00:20:41,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:41,888 INFO L93 Difference]: Finished difference Result 246 states and 372 transitions. [2024-11-24 00:20:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:20:41,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2024-11-24 00:20:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:41,893 INFO L225 Difference]: With dead ends: 246 [2024-11-24 00:20:41,896 INFO L226 Difference]: Without dead ends: 214 [2024-11-24 00:20:41,897 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 [2024-11-24 00:20:41,898 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 327 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:41,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 350 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:20:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-24 00:20:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 84. [2024-11-24 00:20:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 83 states have internal predecessors, (119), 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) [2024-11-24 00:20:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2024-11-24 00:20:41,939 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 34 [2024-11-24 00:20:41,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:41,941 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2024-11-24 00:20:41,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-11-24 00:20:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2024-11-24 00:20:41,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 00:20:41,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:41,943 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] [2024-11-24 00:20:41,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:20:41,944 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:41,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1009296933, now seen corresponding path program 1 times [2024-11-24 00:20:41,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997232943] [2024-11-24 00:20:41,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:41,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:42,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:42,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997232943] [2024-11-24 00:20:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997232943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:42,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874241125] [2024-11-24 00:20:42,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:42,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:42,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:42,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:42,129 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-24 00:20:42,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:42,194 INFO L93 Difference]: Finished difference Result 197 states and 294 transitions. [2024-11-24 00:20:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2024-11-24 00:20:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:42,200 INFO L225 Difference]: With dead ends: 197 [2024-11-24 00:20:42,200 INFO L226 Difference]: Without dead ends: 135 [2024-11-24 00:20:42,200 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 [2024-11-24 00:20:42,201 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:42,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-24 00:20:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2024-11-24 00:20:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4538461538461538) internal successors, (189), 130 states have internal predecessors, (189), 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) [2024-11-24 00:20:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 189 transitions. [2024-11-24 00:20:42,245 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 189 transitions. Word has length 36 [2024-11-24 00:20:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:42,249 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 189 transitions. [2024-11-24 00:20:42,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-24 00:20:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 189 transitions. [2024-11-24 00:20:42,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 00:20:42,250 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:42,250 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] [2024-11-24 00:20:42,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:20:42,251 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:42,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash -942803421, now seen corresponding path program 1 times [2024-11-24 00:20:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167193828] [2024-11-24 00:20:42,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:42,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:42,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:42,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167193828] [2024-11-24 00:20:42,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167193828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:42,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:42,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:42,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516404661] [2024-11-24 00:20:42,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:42,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:42,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:42,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:42,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:42,605 INFO L87 Difference]: Start difference. First operand 131 states and 189 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-24 00:20:42,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:42,730 INFO L93 Difference]: Finished difference Result 242 states and 357 transitions. [2024-11-24 00:20:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 36 [2024-11-24 00:20:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:42,732 INFO L225 Difference]: With dead ends: 242 [2024-11-24 00:20:42,733 INFO L226 Difference]: Without dead ends: 133 [2024-11-24 00:20:42,734 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 [2024-11-24 00:20:42,738 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 39 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 206 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 [2024-11-24 00:20:42,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-24 00:20:42,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2024-11-24 00:20:42,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4384615384615385) internal successors, (187), 130 states have internal predecessors, (187), 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) [2024-11-24 00:20:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 187 transitions. [2024-11-24 00:20:42,764 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 187 transitions. Word has length 36 [2024-11-24 00:20:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:42,765 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 187 transitions. [2024-11-24 00:20:42,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2024-11-24 00:20:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 187 transitions. [2024-11-24 00:20:42,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-24 00:20:42,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:42,770 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] [2024-11-24 00:20:42,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:20:42,771 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:42,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash 423141804, now seen corresponding path program 1 times [2024-11-24 00:20:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631682926] [2024-11-24 00:20:42,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631682926] [2024-11-24 00:20:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631682926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:43,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:20:43,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527314508] [2024-11-24 00:20:43,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:43,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:20:43,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:43,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:20:43,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:20:43,187 INFO L87 Difference]: Start difference. First operand 131 states and 187 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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) [2024-11-24 00:20:43,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:43,271 INFO L93 Difference]: Finished difference Result 139 states and 196 transitions. [2024-11-24 00:20:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:20:43,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 [2024-11-24 00:20:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:43,273 INFO L225 Difference]: With dead ends: 139 [2024-11-24 00:20:43,273 INFO L226 Difference]: Without dead ends: 137 [2024-11-24 00:20:43,274 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 [2024-11-24 00:20:43,274 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:43,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 449 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-24 00:20:43,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-24 00:20:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.411764705882353) internal successors, (192), 136 states have internal predecessors, (192), 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) [2024-11-24 00:20:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 192 transitions. [2024-11-24 00:20:43,285 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 192 transitions. Word has length 37 [2024-11-24 00:20:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:43,286 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 192 transitions. [2024-11-24 00:20:43,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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) [2024-11-24 00:20:43,286 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 192 transitions. [2024-11-24 00:20:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:20:43,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:43,288 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] [2024-11-24 00:20:43,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:20:43,288 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:43,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash -107409885, now seen corresponding path program 1 times [2024-11-24 00:20:43,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:43,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499200588] [2024-11-24 00:20:43,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:43,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:43,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499200588] [2024-11-24 00:20:43,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499200588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:43,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:43,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:43,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044660938] [2024-11-24 00:20:43,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:43,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:43,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:43,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:43,393 INFO L87 Difference]: Start difference. First operand 137 states and 192 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-24 00:20:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:43,422 INFO L93 Difference]: Finished difference Result 351 states and 504 transitions. [2024-11-24 00:20:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:43,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 [2024-11-24 00:20:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:43,424 INFO L225 Difference]: With dead ends: 351 [2024-11-24 00:20:43,424 INFO L226 Difference]: Without dead ends: 236 [2024-11-24 00:20:43,424 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 [2024-11-24 00:20:43,425 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 154 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 [2024-11-24 00:20:43,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 154 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:43,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-24 00:20:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2024-11-24 00:20:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.4120171673819744) internal successors, (329), 233 states have internal predecessors, (329), 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) [2024-11-24 00:20:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 329 transitions. [2024-11-24 00:20:43,455 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 329 transitions. Word has length 38 [2024-11-24 00:20:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:43,456 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 329 transitions. [2024-11-24 00:20:43,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-24 00:20:43,456 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 329 transitions. [2024-11-24 00:20:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:20:43,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:43,458 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] [2024-11-24 00:20:43,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:20:43,458 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:43,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:43,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1673522979, now seen corresponding path program 1 times [2024-11-24 00:20:43,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:43,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016236367] [2024-11-24 00:20:43,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:43,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:43,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:43,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016236367] [2024-11-24 00:20:43,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016236367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:43,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:43,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:43,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901118834] [2024-11-24 00:20:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:43,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:43,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:43,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:43,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:43,533 INFO L87 Difference]: Start difference. First operand 234 states and 329 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-24 00:20:43,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:43,569 INFO L93 Difference]: Finished difference Result 626 states and 887 transitions. [2024-11-24 00:20:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:43,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 [2024-11-24 00:20:43,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:43,573 INFO L225 Difference]: With dead ends: 626 [2024-11-24 00:20:43,573 INFO L226 Difference]: Without dead ends: 414 [2024-11-24 00:20:43,574 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 [2024-11-24 00:20:43,576 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 156 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 [2024-11-24 00:20:43,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-24 00:20:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 412. [2024-11-24 00:20:43,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.389294403892944) internal successors, (571), 411 states have internal predecessors, (571), 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) [2024-11-24 00:20:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 571 transitions. [2024-11-24 00:20:43,613 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 571 transitions. Word has length 38 [2024-11-24 00:20:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:43,614 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 571 transitions. [2024-11-24 00:20:43,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2024-11-24 00:20:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 571 transitions. [2024-11-24 00:20:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 00:20:43,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:43,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:43,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:20:43,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:43,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 913154302, now seen corresponding path program 1 times [2024-11-24 00:20:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775029659] [2024-11-24 00:20:43,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:43,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:43,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775029659] [2024-11-24 00:20:43,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775029659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:43,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:43,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:43,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664062643] [2024-11-24 00:20:43,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:43,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:43,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:43,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:43,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:43,682 INFO L87 Difference]: Start difference. First operand 412 states and 571 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-24 00:20:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:43,727 INFO L93 Difference]: Finished difference Result 835 states and 1177 transitions. [2024-11-24 00:20:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:43,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2024-11-24 00:20:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:43,731 INFO L225 Difference]: With dead ends: 835 [2024-11-24 00:20:43,731 INFO L226 Difference]: Without dead ends: 600 [2024-11-24 00:20:43,732 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 [2024-11-24 00:20:43,732 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 37 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 155 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 [2024-11-24 00:20:43,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 155 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:43,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-24 00:20:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 598. [2024-11-24 00:20:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.3819095477386936) internal successors, (825), 597 states have internal predecessors, (825), 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) [2024-11-24 00:20:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 825 transitions. [2024-11-24 00:20:43,762 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 825 transitions. Word has length 40 [2024-11-24 00:20:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:43,774 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 825 transitions. [2024-11-24 00:20:43,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-11-24 00:20:43,774 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 825 transitions. [2024-11-24 00:20:43,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:20:43,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:43,775 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] [2024-11-24 00:20:43,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:20:43,776 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2071314416, now seen corresponding path program 1 times [2024-11-24 00:20:43,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:43,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870875533] [2024-11-24 00:20:43,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:43,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:20:43,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870875533] [2024-11-24 00:20:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870875533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:43,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:43,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:43,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657299709] [2024-11-24 00:20:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:43,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:43,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:43,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:43,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:43,976 INFO L87 Difference]: Start difference. First operand 598 states and 825 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-24 00:20:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:44,154 INFO L93 Difference]: Finished difference Result 2454 states and 3405 transitions. [2024-11-24 00:20:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 53 [2024-11-24 00:20:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:44,165 INFO L225 Difference]: With dead ends: 2454 [2024-11-24 00:20:44,165 INFO L226 Difference]: Without dead ends: 1880 [2024-11-24 00:20:44,167 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 [2024-11-24 00:20:44,167 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 176 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:44,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 281 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:44,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2024-11-24 00:20:44,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1170. [2024-11-24 00:20:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 1169 states have (on average 1.3798118049615056) internal successors, (1613), 1169 states have internal predecessors, (1613), 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) [2024-11-24 00:20:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1613 transitions. [2024-11-24 00:20:44,275 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1613 transitions. Word has length 53 [2024-11-24 00:20:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:44,277 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1613 transitions. [2024-11-24 00:20:44,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-24 00:20:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1613 transitions. [2024-11-24 00:20:44,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:20:44,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:44,280 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] [2024-11-24 00:20:44,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:20:44,280 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:44,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash -442720016, now seen corresponding path program 1 times [2024-11-24 00:20:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:44,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369509766] [2024-11-24 00:20:44,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:20:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:44,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369509766] [2024-11-24 00:20:44,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369509766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:44,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:44,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932119479] [2024-11-24 00:20:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:44,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:44,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:44,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:44,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:44,479 INFO L87 Difference]: Start difference. First operand 1170 states and 1613 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-24 00:20:44,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:44,674 INFO L93 Difference]: Finished difference Result 3026 states and 4193 transitions. [2024-11-24 00:20:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:44,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 53 [2024-11-24 00:20:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:44,686 INFO L225 Difference]: With dead ends: 3026 [2024-11-24 00:20:44,686 INFO L226 Difference]: Without dead ends: 2452 [2024-11-24 00:20:44,687 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 [2024-11-24 00:20:44,688 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 177 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:44,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 278 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2024-11-24 00:20:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2030. [2024-11-24 00:20:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2030 states, 2029 states have (on average 1.3725973385904386) internal successors, (2785), 2029 states have internal predecessors, (2785), 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) [2024-11-24 00:20:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2785 transitions. [2024-11-24 00:20:44,819 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2785 transitions. Word has length 53 [2024-11-24 00:20:44,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:44,819 INFO L471 AbstractCegarLoop]: Abstraction has 2030 states and 2785 transitions. [2024-11-24 00:20:44,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2024-11-24 00:20:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2785 transitions. [2024-11-24 00:20:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:20:44,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:44,821 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] [2024-11-24 00:20:44,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:20:44,821 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:44,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 614088040, now seen corresponding path program 1 times [2024-11-24 00:20:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812535580] [2024-11-24 00:20:44,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:44,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:44,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:44,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812535580] [2024-11-24 00:20:44,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812535580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851674980] [2024-11-24 00:20:44,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:44,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:44,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:44,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:44,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:44,980 INFO L87 Difference]: Start difference. First operand 2030 states and 2785 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-24 00:20:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:45,056 INFO L93 Difference]: Finished difference Result 3506 states and 4848 transitions. [2024-11-24 00:20:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 [2024-11-24 00:20:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:45,063 INFO L225 Difference]: With dead ends: 3506 [2024-11-24 00:20:45,063 INFO L226 Difference]: Without dead ends: 1500 [2024-11-24 00:20:45,067 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 [2024-11-24 00:20:45,067 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 34 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 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 [2024-11-24 00:20:45,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:45,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2024-11-24 00:20:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1498. [2024-11-24 00:20:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1497 states have (on average 1.3740814963259853) internal successors, (2057), 1497 states have internal predecessors, (2057), 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) [2024-11-24 00:20:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2057 transitions. [2024-11-24 00:20:45,160 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2057 transitions. Word has length 55 [2024-11-24 00:20:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:45,161 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 2057 transitions. [2024-11-24 00:20:45,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-24 00:20:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2057 transitions. [2024-11-24 00:20:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:20:45,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:45,162 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] [2024-11-24 00:20:45,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:20:45,162 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:45,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1276832885, now seen corresponding path program 1 times [2024-11-24 00:20:45,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791259881] [2024-11-24 00:20:45,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:45,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:20:45,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:45,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791259881] [2024-11-24 00:20:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791259881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:45,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:45,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:20:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743737337] [2024-11-24 00:20:45,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:45,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:20:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:45,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:20:45,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:20:45,354 INFO L87 Difference]: Start difference. First operand 1498 states and 2057 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-24 00:20:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:45,528 INFO L93 Difference]: Finished difference Result 2754 states and 3813 transitions. [2024-11-24 00:20:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:20:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 [2024-11-24 00:20:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:45,538 INFO L225 Difference]: With dead ends: 2754 [2024-11-24 00:20:45,539 INFO L226 Difference]: Without dead ends: 2336 [2024-11-24 00:20:45,540 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 [2024-11-24 00:20:45,541 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 171 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:45,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 304 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:20:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2024-11-24 00:20:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1914. [2024-11-24 00:20:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 1.3763721902770518) internal successors, (2633), 1913 states have internal predecessors, (2633), 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) [2024-11-24 00:20:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2633 transitions. [2024-11-24 00:20:45,662 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2633 transitions. Word has length 55 [2024-11-24 00:20:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:45,663 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2633 transitions. [2024-11-24 00:20:45,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-11-24 00:20:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2633 transitions. [2024-11-24 00:20:45,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:20:45,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:45,664 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] [2024-11-24 00:20:45,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:20:45,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:45,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:45,665 INFO L85 PathProgramCache]: Analyzing trace with hash -935959243, now seen corresponding path program 1 times [2024-11-24 00:20:45,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:45,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-24 00:20:45,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:45,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:45,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:45,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-24 00:20:45,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197064742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:45,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:45,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:45,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432980109] [2024-11-24 00:20:45,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:45,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:45,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:45,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:45,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:45,793 INFO L87 Difference]: Start difference. First operand 1914 states and 2633 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) [2024-11-24 00:20:45,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:45,848 INFO L93 Difference]: Finished difference Result 2854 states and 3931 transitions. [2024-11-24 00:20:45,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:45,849 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 [2024-11-24 00:20:45,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:45,853 INFO L225 Difference]: With dead ends: 2854 [2024-11-24 00:20:45,853 INFO L226 Difference]: Without dead ends: 980 [2024-11-24 00:20:45,855 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 [2024-11-24 00:20:45,856 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 138 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 [2024-11-24 00:20:45,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 138 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-24 00:20:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 978. [2024-11-24 00:20:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3500511770726715) internal successors, (1319), 977 states have internal predecessors, (1319), 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) [2024-11-24 00:20:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1319 transitions. [2024-11-24 00:20:45,908 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1319 transitions. Word has length 56 [2024-11-24 00:20:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:45,908 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1319 transitions. [2024-11-24 00:20:45,909 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) [2024-11-24 00:20:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1319 transitions. [2024-11-24 00:20:45,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 00:20:45,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:45,912 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] [2024-11-24 00:20:45,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:20:45,912 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:45,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash 735785191, now seen corresponding path program 1 times [2024-11-24 00:20:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:45,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839278660] [2024-11-24 00:20:45,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839278660] [2024-11-24 00:20:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839278660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:46,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:20:46,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:20:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424674717] [2024-11-24 00:20:46,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:46,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:20:46,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:46,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:20:46,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:20:46,048 INFO L87 Difference]: Start difference. First operand 978 states and 1319 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) [2024-11-24 00:20:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:46,082 INFO L93 Difference]: Finished difference Result 1450 states and 1960 transitions. [2024-11-24 00:20:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:20:46,082 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 [2024-11-24 00:20:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:46,085 INFO L225 Difference]: With dead ends: 1450 [2024-11-24 00:20:46,085 INFO L226 Difference]: Without dead ends: 512 [2024-11-24 00:20:46,086 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 [2024-11-24 00:20:46,087 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 26 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 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 [2024-11-24 00:20:46,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 123 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:20:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-24 00:20:46,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2024-11-24 00:20:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.3182711198428292) internal successors, (671), 509 states have internal predecessors, (671), 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) [2024-11-24 00:20:46,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 671 transitions. [2024-11-24 00:20:46,113 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 671 transitions. Word has length 58 [2024-11-24 00:20:46,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:46,113 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 671 transitions. [2024-11-24 00:20:46,114 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) [2024-11-24 00:20:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 671 transitions. [2024-11-24 00:20:46,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 00:20:46,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:46,115 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] [2024-11-24 00:20:46,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:20:46,115 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:46,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -967290087, now seen corresponding path program 1 times [2024-11-24 00:20:46,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:46,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543822772] [2024-11-24 00:20:46,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:46,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543822772] [2024-11-24 00:20:46,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543822772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:46,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180455521] [2024-11-24 00:20:46,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:46,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:46,866 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:46,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:20:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:47,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:20:47,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:20:47,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:20:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180455521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:47,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-24 00:20:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293771524] [2024-11-24 00:20:47,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:20:47,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:47,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:20:47,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:20:47,750 INFO L87 Difference]: Start difference. First operand 510 states and 671 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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) [2024-11-24 00:20:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:50,079 INFO L93 Difference]: Finished difference Result 2617 states and 3443 transitions. [2024-11-24 00:20:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 00:20:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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 [2024-11-24 00:20:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:50,089 INFO L225 Difference]: With dead ends: 2617 [2024-11-24 00:20:50,089 INFO L226 Difference]: Without dead ends: 2147 [2024-11-24 00:20:50,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=371, Invalid=1269, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 00:20:50,093 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 705 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:50,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 482 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:20:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-24 00:20:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2113. [2024-11-24 00:20:50,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2112 states have (on average 1.2471590909090908) internal successors, (2634), 2112 states have internal predecessors, (2634), 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) [2024-11-24 00:20:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2634 transitions. [2024-11-24 00:20:50,210 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2634 transitions. Word has length 60 [2024-11-24 00:20:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:50,210 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2634 transitions. [2024-11-24 00:20:50,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 16 states have internal predecessors, (164), 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) [2024-11-24 00:20:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2634 transitions. [2024-11-24 00:20:50,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:20:50,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:50,215 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, 1] [2024-11-24 00:20:50,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:20:50,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:20:50,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:50,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash 97531615, now seen corresponding path program 1 times [2024-11-24 00:20:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903807470] [2024-11-24 00:20:50,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903807470] [2024-11-24 00:20:51,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903807470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:51,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122950528] [2024-11-24 00:20:51,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:51,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:51,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:51,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:51,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:20:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:51,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-24 00:20:51,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:51,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:20:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:53,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122950528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:20:53,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:20:53,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-24 00:20:53,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945976849] [2024-11-24 00:20:53,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:20:53,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:20:53,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:53,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:20:53,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:20:53,079 INFO L87 Difference]: Start difference. First operand 2113 states and 2634 transitions. Second operand has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 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) [2024-11-24 00:20:55,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:55,558 INFO L93 Difference]: Finished difference Result 10001 states and 12601 transitions. [2024-11-24 00:20:55,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-24 00:20:55,559 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 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 [2024-11-24 00:20:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:55,590 INFO L225 Difference]: With dead ends: 10001 [2024-11-24 00:20:55,591 INFO L226 Difference]: Without dead ends: 8094 [2024-11-24 00:20:55,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=551, Invalid=2205, Unknown=0, NotChecked=0, Total=2756 [2024-11-24 00:20:55,597 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 1148 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:55,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1066 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:20:55,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8094 states. [2024-11-24 00:20:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8094 to 7958. [2024-11-24 00:20:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7958 states, 7957 states have (on average 1.2184240291567174) internal successors, (9695), 7957 states have internal predecessors, (9695), 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) [2024-11-24 00:20:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7958 states to 7958 states and 9695 transitions. [2024-11-24 00:20:56,138 INFO L78 Accepts]: Start accepts. Automaton has 7958 states and 9695 transitions. Word has length 61 [2024-11-24 00:20:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:56,138 INFO L471 AbstractCegarLoop]: Abstraction has 7958 states and 9695 transitions. [2024-11-24 00:20:56,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.56) internal successors, (164), 24 states have internal predecessors, (164), 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) [2024-11-24 00:20:56,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7958 states and 9695 transitions. [2024-11-24 00:20:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-24 00:20:56,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:56,140 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:56,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:20:56,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:20:56,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:56,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -145481317, now seen corresponding path program 1 times [2024-11-24 00:20:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572896196] [2024-11-24 00:20:56,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:20:58,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572896196] [2024-11-24 00:20:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572896196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50077710] [2024-11-24 00:20:58,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:58,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:58,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:58,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:20:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:59,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 00:20:59,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:03,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:21:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:21:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50077710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:21:08,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:21:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 24] total 59 [2024-11-24 00:21:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270890789] [2024-11-24 00:21:08,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:21:08,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-24 00:21:08,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:08,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-24 00:21:08,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=2982, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 00:21:08,531 INFO L87 Difference]: Start difference. First operand 7958 states and 9695 transitions. Second operand has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 59 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) [2024-11-24 00:22:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:27,680 INFO L93 Difference]: Finished difference Result 21816 states and 26915 transitions. [2024-11-24 00:22:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2024-11-24 00:22:27,681 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 59 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 [2024-11-24 00:22:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:27,728 INFO L225 Difference]: With dead ends: 21816 [2024-11-24 00:22:27,728 INFO L226 Difference]: Without dead ends: 18458 [2024-11-24 00:22:27,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30434 ImplicationChecksByTransitivity, 78.2s TimeCoverageRelationStatistics Valid=16029, Invalid=61533, Unknown=0, NotChecked=0, Total=77562 [2024-11-24 00:22:27,748 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 6765 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 2601 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6765 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:27,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6765 Valid, 3587 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 2601 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-24 00:22:27,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18458 states. [2024-11-24 00:22:28,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18458 to 11396. [2024-11-24 00:22:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11396 states, 11395 states have (on average 1.228609039052216) internal successors, (14000), 11395 states have internal predecessors, (14000), 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) [2024-11-24 00:22:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11396 states to 11396 states and 14000 transitions. [2024-11-24 00:22:28,683 INFO L78 Accepts]: Start accepts. Automaton has 11396 states and 14000 transitions. Word has length 62 [2024-11-24 00:22:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:28,684 INFO L471 AbstractCegarLoop]: Abstraction has 11396 states and 14000 transitions. [2024-11-24 00:22:28,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 59 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) [2024-11-24 00:22:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11396 states and 14000 transitions. [2024-11-24 00:22:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-24 00:22:28,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:28,685 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, 1, 1, 1] [2024-11-24 00:22:28,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:22:28,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-24 00:22:28,887 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:28,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -221777393, now seen corresponding path program 1 times [2024-11-24 00:22:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:28,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142735271] [2024-11-24 00:22:28,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:30,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142735271] [2024-11-24 00:22:30,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142735271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:30,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94419872] [2024-11-24 00:22:30,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:30,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:30,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:30,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:30,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:22:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:30,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 00:22:30,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:33,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:22:37,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94419872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:22:37,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:22:37,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 17] total 55 [2024-11-24 00:22:37,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882879376] [2024-11-24 00:22:37,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:22:37,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 00:22:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:37,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 00:22:37,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2564, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 00:22:37,695 INFO L87 Difference]: Start difference. First operand 11396 states and 14000 transitions. Second operand has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 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) [2024-11-24 00:23:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:11,407 INFO L93 Difference]: Finished difference Result 22178 states and 27226 transitions. [2024-11-24 00:23:11,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-24 00:23:11,408 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 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 [2024-11-24 00:23:11,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:11,456 INFO L225 Difference]: With dead ends: 22178 [2024-11-24 00:23:11,456 INFO L226 Difference]: Without dead ends: 19524 [2024-11-24 00:23:11,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10167 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=5947, Invalid=23465, Unknown=0, NotChecked=0, Total=29412 [2024-11-24 00:23:11,466 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 2550 mSDsluCounter, 2068 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2550 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:11,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2550 Valid, 2175 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 00:23:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19524 states. [2024-11-24 00:23:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19524 to 12538. [2024-11-24 00:23:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12538 states, 12537 states have (on average 1.2266092366594878) internal successors, (15378), 12537 states have internal predecessors, (15378), 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) [2024-11-24 00:23:12,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12538 states to 12538 states and 15378 transitions. [2024-11-24 00:23:12,438 INFO L78 Accepts]: Start accepts. Automaton has 12538 states and 15378 transitions. Word has length 63 [2024-11-24 00:23:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:12,439 INFO L471 AbstractCegarLoop]: Abstraction has 12538 states and 15378 transitions. [2024-11-24 00:23:12,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 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) [2024-11-24 00:23:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 12538 states and 15378 transitions. [2024-11-24 00:23:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:23:12,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:12,440 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, 1, 1, 1, 1] [2024-11-24 00:23:12,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:23:12,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:12,644 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:12,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:12,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2016552339, now seen corresponding path program 1 times [2024-11-24 00:23:12,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:12,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669017734] [2024-11-24 00:23:12,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:12,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:13,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669017734] [2024-11-24 00:23:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669017734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455414449] [2024-11-24 00:23:13,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:13,508 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:13,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:23:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:13,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 00:23:13,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:16,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:19,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:19,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455414449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:19,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:19,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 18] total 44 [2024-11-24 00:23:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064910229] [2024-11-24 00:23:19,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:19,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-24 00:23:19,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:19,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-24 00:23:19,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=1642, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:23:19,604 INFO L87 Difference]: Start difference. First operand 12538 states and 15378 transitions. Second operand has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 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) [2024-11-24 00:23:26,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:26,163 INFO L93 Difference]: Finished difference Result 19313 states and 23824 transitions. [2024-11-24 00:23:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-24 00:23:26,163 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 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 64 [2024-11-24 00:23:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:26,195 INFO L225 Difference]: With dead ends: 19313 [2024-11-24 00:23:26,195 INFO L226 Difference]: Without dead ends: 13261 [2024-11-24 00:23:26,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1827 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1777, Invalid=5879, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 00:23:26,204 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 2360 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:26,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 965 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:23:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13261 states. [2024-11-24 00:23:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13261 to 8994. [2024-11-24 00:23:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 8993 states have (on average 1.2203936394973869) internal successors, (10975), 8993 states have internal predecessors, (10975), 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) [2024-11-24 00:23:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 10975 transitions. [2024-11-24 00:23:27,136 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 10975 transitions. Word has length 64 [2024-11-24 00:23:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:27,137 INFO L471 AbstractCegarLoop]: Abstraction has 8994 states and 10975 transitions. [2024-11-24 00:23:27,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.5454545454545454) internal successors, (156), 44 states have internal predecessors, (156), 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) [2024-11-24 00:23:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 10975 transitions. [2024-11-24 00:23:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:23:27,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:27,138 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, 1, 1, 1, 1] [2024-11-24 00:23:27,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:23:27,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:27,339 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:27,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash 213323789, now seen corresponding path program 1 times [2024-11-24 00:23:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791113441] [2024-11-24 00:23:27,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:27,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:29,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791113441] [2024-11-24 00:23:29,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791113441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:29,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244700264] [2024-11-24 00:23:29,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:29,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:29,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:29,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:29,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:23:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:29,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 00:23:29,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:31,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:23:36,572 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:23:36,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244700264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:23:36,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:23:36,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 58 [2024-11-24 00:23:36,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490911324] [2024-11-24 00:23:36,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:23:36,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-24 00:23:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:36,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-24 00:23:36,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2951, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 00:23:36,574 INFO L87 Difference]: Start difference. First operand 8994 states and 10975 transitions. Second operand has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 58 states have internal predecessors, (169), 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) [2024-11-24 00:24:12,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:24:12,687 INFO L93 Difference]: Finished difference Result 27447 states and 33713 transitions. [2024-11-24 00:24:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-24 00:24:12,688 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 58 states have internal predecessors, (169), 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 64 [2024-11-24 00:24:12,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:24:12,717 INFO L225 Difference]: With dead ends: 27447 [2024-11-24 00:24:12,717 INFO L226 Difference]: Without dead ends: 23155 [2024-11-24 00:24:12,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11836 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=6945, Invalid=25635, Unknown=0, NotChecked=0, Total=32580 [2024-11-24 00:24:12,726 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 5841 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5841 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:24:12,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5841 Valid, 2341 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-24 00:24:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23155 states. [2024-11-24 00:24:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23155 to 8240. [2024-11-24 00:24:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8240 states, 8239 states have (on average 1.2225998300764656) internal successors, (10073), 8239 states have internal predecessors, (10073), 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) [2024-11-24 00:24:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8240 states to 8240 states and 10073 transitions. [2024-11-24 00:24:13,695 INFO L78 Accepts]: Start accepts. Automaton has 8240 states and 10073 transitions. Word has length 64 [2024-11-24 00:24:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:24:13,696 INFO L471 AbstractCegarLoop]: Abstraction has 8240 states and 10073 transitions. [2024-11-24 00:24:13,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.913793103448276) internal successors, (169), 58 states have internal predecessors, (169), 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) [2024-11-24 00:24:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 8240 states and 10073 transitions. [2024-11-24 00:24:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:24:13,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:24:13,697 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, 1, 1, 1, 1] [2024-11-24 00:24:13,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:24:13,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-24 00:24:13,898 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:24:13,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:24:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1200823503, now seen corresponding path program 1 times [2024-11-24 00:24:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:24:13,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252557475] [2024-11-24 00:24:13,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:13,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:24:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:14,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:14,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:24:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252557475] [2024-11-24 00:24:14,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252557475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:24:14,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197059909] [2024-11-24 00:24:14,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:24:14,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:24:14,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:24:14,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:24:14,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:24:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:24:14,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-24 00:24:14,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:24:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:18,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:24:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:24:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197059909] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:24:23,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:24:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 25, 22] total 55 [2024-11-24 00:24:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146797299] [2024-11-24 00:24:23,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:24:23,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-24 00:24:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:24:23,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-24 00:24:23,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2589, Unknown=0, NotChecked=0, Total=2970 [2024-11-24 00:24:23,555 INFO L87 Difference]: Start difference. First operand 8240 states and 10073 transitions. Second operand has 55 states, 55 states have (on average 3.0545454545454547) internal successors, (168), 55 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) [2024-11-24 00:25:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:01,154 INFO L93 Difference]: Finished difference Result 14344 states and 17603 transitions. [2024-11-24 00:25:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-24 00:25:01,155 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.0545454545454547) internal successors, (168), 55 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 64 [2024-11-24 00:25:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:01,169 INFO L225 Difference]: With dead ends: 14344 [2024-11-24 00:25:01,169 INFO L226 Difference]: Without dead ends: 10470 [2024-11-24 00:25:01,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6866 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=4914, Invalid=17436, Unknown=0, NotChecked=0, Total=22350 [2024-11-24 00:25:01,176 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 2708 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:01,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 1820 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 00:25:01,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10470 states. [2024-11-24 00:25:02,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10470 to 6348. [2024-11-24 00:25:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 6347 states have (on average 1.2197888766346305) internal successors, (7742), 6347 states have internal predecessors, (7742), 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) [2024-11-24 00:25:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 7742 transitions. [2024-11-24 00:25:02,047 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 7742 transitions. Word has length 64 [2024-11-24 00:25:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:02,047 INFO L471 AbstractCegarLoop]: Abstraction has 6348 states and 7742 transitions. [2024-11-24 00:25:02,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.0545454545454547) internal successors, (168), 55 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) [2024-11-24 00:25:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 7742 transitions. [2024-11-24 00:25:02,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:25:02,050 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:02,050 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-11-24 00:25:02,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:25:02,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:02,255 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:02,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash -564565362, now seen corresponding path program 1 times [2024-11-24 00:25:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:02,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689918969] [2024-11-24 00:25:02,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:02,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:03,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689918969] [2024-11-24 00:25:03,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689918969] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:03,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046877684] [2024-11-24 00:25:03,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:03,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:03,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:03,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:03,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:25:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:03,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:25:03,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:25:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 26 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:04,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:25:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046877684] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:25:07,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:25:07,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 43 [2024-11-24 00:25:07,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719196469] [2024-11-24 00:25:07,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:25:07,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-24 00:25:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:07,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-24 00:25:07,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 00:25:07,145 INFO L87 Difference]: Start difference. First operand 6348 states and 7742 transitions. Second operand has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 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) [2024-11-24 00:25:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:17,389 INFO L93 Difference]: Finished difference Result 14185 states and 17495 transitions. [2024-11-24 00:25:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-24 00:25:17,389 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 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 103 [2024-11-24 00:25:17,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:17,399 INFO L225 Difference]: With dead ends: 14185 [2024-11-24 00:25:17,399 INFO L226 Difference]: Without dead ends: 10469 [2024-11-24 00:25:17,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=1888, Invalid=11452, Unknown=0, NotChecked=0, Total=13340 [2024-11-24 00:25:17,407 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 1488 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:17,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2421 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:25:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2024-11-24 00:25:18,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 8260. [2024-11-24 00:25:18,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8260 states, 8259 states have (on average 1.2144327400411672) internal successors, (10030), 8259 states have internal predecessors, (10030), 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) [2024-11-24 00:25:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8260 states to 8260 states and 10030 transitions. [2024-11-24 00:25:18,277 INFO L78 Accepts]: Start accepts. Automaton has 8260 states and 10030 transitions. Word has length 103 [2024-11-24 00:25:18,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:18,277 INFO L471 AbstractCegarLoop]: Abstraction has 8260 states and 10030 transitions. [2024-11-24 00:25:18,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.72093023255814) internal successors, (289), 43 states have internal predecessors, (289), 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) [2024-11-24 00:25:18,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8260 states and 10030 transitions. [2024-11-24 00:25:18,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:25:18,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:18,279 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:18,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:25:18,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:18,480 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:18,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -707989320, now seen corresponding path program 1 times [2024-11-24 00:25:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826775856] [2024-11-24 00:25:18,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 31 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:19,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:19,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826775856] [2024-11-24 00:25:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826775856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:19,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071711903] [2024-11-24 00:25:19,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:19,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:19,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:19,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:19,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:25:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:19,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:25:19,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:25:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:21,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:25:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:25,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071711903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:25:25,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:25:25,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 17] total 42 [2024-11-24 00:25:25,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786463550] [2024-11-24 00:25:25,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:25:25,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-24 00:25:25,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:25,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-24 00:25:25,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2024-11-24 00:25:25,133 INFO L87 Difference]: Start difference. First operand 8260 states and 10030 transitions. Second operand has 42 states, 42 states have (on average 6.404761904761905) internal successors, (269), 42 states have internal predecessors, (269), 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) [2024-11-24 00:25:43,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:43,999 INFO L93 Difference]: Finished difference Result 18142 states and 22197 transitions. [2024-11-24 00:25:43,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-24 00:25:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.404761904761905) internal successors, (269), 42 states have internal predecessors, (269), 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 [2024-11-24 00:25:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:44,012 INFO L225 Difference]: With dead ends: 18142 [2024-11-24 00:25:44,012 INFO L226 Difference]: Without dead ends: 12687 [2024-11-24 00:25:44,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4637 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=2879, Invalid=13891, Unknown=0, NotChecked=0, Total=16770 [2024-11-24 00:25:44,018 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 2180 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2180 SdHoareTripleChecker+Valid, 2633 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:44,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2180 Valid, 2633 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:25:44,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12687 states. [2024-11-24 00:25:45,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12687 to 12244. [2024-11-24 00:25:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12244 states, 12243 states have (on average 1.200277709711672) internal successors, (14695), 12243 states have internal predecessors, (14695), 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) [2024-11-24 00:25:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12244 states to 12244 states and 14695 transitions. [2024-11-24 00:25:45,671 INFO L78 Accepts]: Start accepts. Automaton has 12244 states and 14695 transitions. Word has length 104 [2024-11-24 00:25:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:45,671 INFO L471 AbstractCegarLoop]: Abstraction has 12244 states and 14695 transitions. [2024-11-24 00:25:45,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.404761904761905) internal successors, (269), 42 states have internal predecessors, (269), 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) [2024-11-24 00:25:45,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12244 states and 14695 transitions. [2024-11-24 00:25:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:25:45,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:45,673 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:25:45,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:25:45,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:45,874 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:45,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:45,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1090487846, now seen corresponding path program 1 times [2024-11-24 00:25:45,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:45,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581238375] [2024-11-24 00:25:45,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:45,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:47,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:47,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581238375] [2024-11-24 00:25:47,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581238375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:47,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091829214] [2024-11-24 00:25:47,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:47,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:47,474 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:47,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:25:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:47,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-24 00:25:47,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:25:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:51,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:25:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:25:57,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091829214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:25:57,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:25:57,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 22] total 64 [2024-11-24 00:25:57,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414711870] [2024-11-24 00:25:57,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:25:57,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-24 00:25:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:57,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-24 00:25:57,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=3718, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:25:57,612 INFO L87 Difference]: Start difference. First operand 12244 states and 14695 transitions. Second operand has 64 states, 64 states have (on average 4.625) internal successors, (296), 64 states have internal predecessors, (296), 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) [2024-11-24 00:27:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:41,254 INFO L93 Difference]: Finished difference Result 39644 states and 47945 transitions. [2024-11-24 00:27:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2024-11-24 00:27:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.625) internal successors, (296), 64 states have internal predecessors, (296), 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 [2024-11-24 00:27:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:41,289 INFO L225 Difference]: With dead ends: 39644 [2024-11-24 00:27:41,289 INFO L226 Difference]: Without dead ends: 32723 [2024-11-24 00:27:41,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36408 ImplicationChecksByTransitivity, 94.7s TimeCoverageRelationStatistics Valid=15201, Invalid=85605, Unknown=0, NotChecked=0, Total=100806 [2024-11-24 00:27:41,300 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 4307 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 6404 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 5172 SdHoareTripleChecker+Invalid, 6633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 6404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:41,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 5172 Invalid, 6633 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [229 Valid, 6404 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-24 00:27:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32723 states. [2024-11-24 00:27:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32723 to 24705. [2024-11-24 00:27:44,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24705 states, 24704 states have (on average 1.2051894430051813) internal successors, (29773), 24704 states have internal predecessors, (29773), 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) [2024-11-24 00:27:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24705 states to 24705 states and 29773 transitions. [2024-11-24 00:27:44,423 INFO L78 Accepts]: Start accepts. Automaton has 24705 states and 29773 transitions. Word has length 104 [2024-11-24 00:27:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:44,423 INFO L471 AbstractCegarLoop]: Abstraction has 24705 states and 29773 transitions. [2024-11-24 00:27:44,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.625) internal successors, (296), 64 states have internal predecessors, (296), 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) [2024-11-24 00:27:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 24705 states and 29773 transitions. [2024-11-24 00:27:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:27:44,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:44,426 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:27:44,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:27:44,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:27:44,626 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:44,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:44,627 INFO L85 PathProgramCache]: Analyzing trace with hash 565144456, now seen corresponding path program 1 times [2024-11-24 00:27:44,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:44,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116107512] [2024-11-24 00:27:44,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:44,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:46,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:46,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116107512] [2024-11-24 00:27:46,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116107512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:27:46,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813652959] [2024-11-24 00:27:46,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:27:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:27:46,743 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:27:46,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:27:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:46,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-24 00:27:46,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:27:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:50,732 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:27:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:58,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813652959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:27:58,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:27:58,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28, 24] total 70 [2024-11-24 00:27:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804156680] [2024-11-24 00:27:58,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:27:58,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-24 00:27:58,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:58,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-24 00:27:58,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=4312, Unknown=0, NotChecked=0, Total=4830 [2024-11-24 00:27:58,697 INFO L87 Difference]: Start difference. First operand 24705 states and 29773 transitions. Second operand has 70 states, 70 states have (on average 4.085714285714285) internal successors, (286), 70 states have internal predecessors, (286), 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) [2024-11-24 00:29:25,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:25,829 INFO L93 Difference]: Finished difference Result 48629 states and 58654 transitions. [2024-11-24 00:29:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2024-11-24 00:29:25,830 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.085714285714285) internal successors, (286), 70 states have internal predecessors, (286), 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 [2024-11-24 00:29:25,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:25,861 INFO L225 Difference]: With dead ends: 48629 [2024-11-24 00:29:25,861 INFO L226 Difference]: Without dead ends: 36538 [2024-11-24 00:29:25,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22064 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=8898, Invalid=52854, Unknown=0, NotChecked=0, Total=61752 [2024-11-24 00:29:25,873 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 4258 mSDsluCounter, 4580 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4258 SdHoareTripleChecker+Valid, 4755 SdHoareTripleChecker+Invalid, 3486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:25,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4258 Valid, 4755 Invalid, 3486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-24 00:29:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36538 states. [2024-11-24 00:29:29,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36538 to 23289. [2024-11-24 00:29:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23289 states, 23288 states have (on average 1.2040535898316729) internal successors, (28040), 23288 states have internal predecessors, (28040), 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) [2024-11-24 00:29:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23289 states to 23289 states and 28040 transitions. [2024-11-24 00:29:29,425 INFO L78 Accepts]: Start accepts. Automaton has 23289 states and 28040 transitions. Word has length 105 [2024-11-24 00:29:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:29,426 INFO L471 AbstractCegarLoop]: Abstraction has 23289 states and 28040 transitions. [2024-11-24 00:29:29,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.085714285714285) internal successors, (286), 70 states have internal predecessors, (286), 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) [2024-11-24 00:29:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 23289 states and 28040 transitions. [2024-11-24 00:29:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:29:29,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:29,429 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:29:29,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:29:29,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:29,629 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:29,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1121978252, now seen corresponding path program 1 times [2024-11-24 00:29:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697633714] [2024-11-24 00:29:29,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697633714] [2024-11-24 00:29:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697633714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352202313] [2024-11-24 00:29:31,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:31,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:31,710 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:29:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:31,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 00:29:31,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:35,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352202313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:42,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 26] total 72 [2024-11-24 00:29:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115125258] [2024-11-24 00:29:42,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:42,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-24 00:29:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:42,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-24 00:29:42,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=4634, Unknown=0, NotChecked=0, Total=5112 [2024-11-24 00:29:42,217 INFO L87 Difference]: Start difference. First operand 23289 states and 28040 transitions. Second operand has 72 states, 72 states have (on average 4.111111111111111) internal successors, (296), 72 states have internal predecessors, (296), 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) [2024-11-24 00:30:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:30:21,231 INFO L93 Difference]: Finished difference Result 48145 states and 58202 transitions. [2024-11-24 00:30:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-24 00:30:21,232 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.111111111111111) internal successors, (296), 72 states have internal predecessors, (296), 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 [2024-11-24 00:30:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:30:21,263 INFO L225 Difference]: With dead ends: 48145 [2024-11-24 00:30:21,263 INFO L226 Difference]: Without dead ends: 32370 [2024-11-24 00:30:21,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10928 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=5395, Invalid=30515, Unknown=0, NotChecked=0, Total=35910 [2024-11-24 00:30:21,274 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 4267 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:30:21,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4267 Valid, 3945 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3297 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-24 00:30:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32370 states. [2024-11-24 00:30:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32370 to 20396. [2024-11-24 00:30:25,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20396 states, 20395 states have (on average 1.2056876685462123) internal successors, (24590), 20395 states have internal predecessors, (24590), 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) [2024-11-24 00:30:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20396 states to 20396 states and 24590 transitions. [2024-11-24 00:30:25,331 INFO L78 Accepts]: Start accepts. Automaton has 20396 states and 24590 transitions. Word has length 105 [2024-11-24 00:30:25,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:30:25,331 INFO L471 AbstractCegarLoop]: Abstraction has 20396 states and 24590 transitions. [2024-11-24 00:30:25,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.111111111111111) internal successors, (296), 72 states have internal predecessors, (296), 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) [2024-11-24 00:30:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 20396 states and 24590 transitions. [2024-11-24 00:30:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:30:25,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:30:25,334 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:30:25,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:30:25,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-24 00:30:25,534 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:30:25,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:30:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1156908394, now seen corresponding path program 1 times [2024-11-24 00:30:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:30:25,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823047843] [2024-11-24 00:30:25,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:30:25,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:30:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:30:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 22 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:26,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:30:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823047843] [2024-11-24 00:30:26,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823047843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:30:26,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919600022] [2024-11-24 00:30:26,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:30:26,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:30:26,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:30:26,392 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:30:26,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:30:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:30:26,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-24 00:30:26,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:30:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:28,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:30:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 23 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:29,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919600022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:30:29,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:30:29,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 36 [2024-11-24 00:30:29,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257742011] [2024-11-24 00:30:29,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:30:29,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-24 00:30:29,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:30:29,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-24 00:30:29,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1087, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:30:29,957 INFO L87 Difference]: Start difference. First operand 20396 states and 24590 transitions. Second operand has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 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) [2024-11-24 00:30:39,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:30:39,059 INFO L93 Difference]: Finished difference Result 64944 states and 78976 transitions. [2024-11-24 00:30:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 00:30:39,059 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 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) Word has length 106 [2024-11-24 00:30:39,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:30:39,119 INFO L225 Difference]: With dead ends: 64944 [2024-11-24 00:30:39,119 INFO L226 Difference]: Without dead ends: 45992 [2024-11-24 00:30:39,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=969, Invalid=3453, Unknown=0, NotChecked=0, Total=4422 [2024-11-24 00:30:39,134 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 822 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:30:39,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1562 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:30:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45992 states. [2024-11-24 00:30:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45992 to 38555. [2024-11-24 00:30:45,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38555 states, 38554 states have (on average 1.2036623956009753) internal successors, (46406), 38554 states have internal predecessors, (46406), 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) [2024-11-24 00:30:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38555 states to 38555 states and 46406 transitions. [2024-11-24 00:30:45,308 INFO L78 Accepts]: Start accepts. Automaton has 38555 states and 46406 transitions. Word has length 106 [2024-11-24 00:30:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:30:45,308 INFO L471 AbstractCegarLoop]: Abstraction has 38555 states and 46406 transitions. [2024-11-24 00:30:45,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.555555555555555) internal successors, (272), 36 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) [2024-11-24 00:30:45,308 INFO L276 IsEmpty]: Start isEmpty. Operand 38555 states and 46406 transitions. [2024-11-24 00:30:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:30:45,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:30:45,309 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:30:45,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:30:45,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:30:45,510 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:30:45,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:30:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash 207427662, now seen corresponding path program 1 times [2024-11-24 00:30:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:30:45,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651758501] [2024-11-24 00:30:45,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:30:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:30:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:30:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 31 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:46,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:30:46,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651758501] [2024-11-24 00:30:46,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651758501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:30:46,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930140498] [2024-11-24 00:30:46,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:30:46,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:30:46,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:30:46,183 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:30:46,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:30:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:30:46,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 00:30:46,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:30:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 33 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:47,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:30:49,584 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 34 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:30:49,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930140498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:30:49,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:30:49,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 12] total 38 [2024-11-24 00:30:49,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24420912] [2024-11-24 00:30:49,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:30:49,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-24 00:30:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:30:49,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-24 00:30:49,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2024-11-24 00:30:49,586 INFO L87 Difference]: Start difference. First operand 38555 states and 46406 transitions. Second operand has 38 states, 38 states have (on average 6.947368421052632) internal successors, (264), 38 states have internal predecessors, (264), 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) [2024-11-24 00:31:01,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:31:01,236 INFO L93 Difference]: Finished difference Result 92304 states and 111569 transitions. [2024-11-24 00:31:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-24 00:31:01,237 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.947368421052632) internal successors, (264), 38 states have internal predecessors, (264), 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 106 [2024-11-24 00:31:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:31:01,318 INFO L225 Difference]: With dead ends: 92304 [2024-11-24 00:31:01,318 INFO L226 Difference]: Without dead ends: 56552 [2024-11-24 00:31:01,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1611, Invalid=6045, Unknown=0, NotChecked=0, Total=7656 [2024-11-24 00:31:01,341 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 1818 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:31:01,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 1816 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 00:31:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56552 states. [2024-11-24 00:31:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56552 to 46253. [2024-11-24 00:31:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46253 states, 46252 states have (on average 1.1964239384242843) internal successors, (55337), 46252 states have internal predecessors, (55337), 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) [2024-11-24 00:31:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46253 states to 46253 states and 55337 transitions. [2024-11-24 00:31:09,444 INFO L78 Accepts]: Start accepts. Automaton has 46253 states and 55337 transitions. Word has length 106 [2024-11-24 00:31:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:31:09,444 INFO L471 AbstractCegarLoop]: Abstraction has 46253 states and 55337 transitions. [2024-11-24 00:31:09,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.947368421052632) internal successors, (264), 38 states have internal predecessors, (264), 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) [2024-11-24 00:31:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 46253 states and 55337 transitions. [2024-11-24 00:31:09,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-24 00:31:09,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:31:09,446 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:31:09,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:31:09,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:31:09,647 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:31:09,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -688769106, now seen corresponding path program 1 times [2024-11-24 00:31:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938237253] [2024-11-24 00:31:09,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 45 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938237253] [2024-11-24 00:31:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938237253] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:31:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926175224] [2024-11-24 00:31:10,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:10,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:10,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:31:10,308 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:31:10,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:31:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:10,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:31:10,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 51 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:11,504 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:31:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 42 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:13,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926175224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:31:13,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:31:13,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 34 [2024-11-24 00:31:13,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832687711] [2024-11-24 00:31:13,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:31:13,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:31:13,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:31:13,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:31:13,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:31:13,580 INFO L87 Difference]: Start difference. First operand 46253 states and 55337 transitions. Second operand has 34 states, 34 states have (on average 7.735294117647059) internal successors, (263), 34 states have internal predecessors, (263), 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) [2024-11-24 00:31:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:31:25,961 INFO L93 Difference]: Finished difference Result 102434 states and 122431 transitions. [2024-11-24 00:31:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 00:31:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.735294117647059) internal successors, (263), 34 states have internal predecessors, (263), 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 106 [2024-11-24 00:31:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:31:26,045 INFO L225 Difference]: With dead ends: 102434 [2024-11-24 00:31:26,045 INFO L226 Difference]: Without dead ends: 65384 [2024-11-24 00:31:26,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=605, Invalid=2047, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:31:26,070 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 781 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:31:26,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1126 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:31:26,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65384 states. [2024-11-24 00:31:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65384 to 34252. [2024-11-24 00:31:32,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34252 states, 34251 states have (on average 1.1989430965519254) internal successors, (41065), 34251 states have internal predecessors, (41065), 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) [2024-11-24 00:31:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34252 states to 34252 states and 41065 transitions. [2024-11-24 00:31:32,710 INFO L78 Accepts]: Start accepts. Automaton has 34252 states and 41065 transitions. Word has length 106 [2024-11-24 00:31:32,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:31:32,711 INFO L471 AbstractCegarLoop]: Abstraction has 34252 states and 41065 transitions. [2024-11-24 00:31:32,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.735294117647059) internal successors, (263), 34 states have internal predecessors, (263), 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) [2024-11-24 00:31:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 34252 states and 41065 transitions. [2024-11-24 00:31:32,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:31:32,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:31:32,712 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:31:32,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 00:31:32,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:32,912 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:31:32,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:31:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2068001394, now seen corresponding path program 1 times [2024-11-24 00:31:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:31:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425230937] [2024-11-24 00:31:32,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:32,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:31:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:34,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:31:34,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425230937] [2024-11-24 00:31:34,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425230937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:31:34,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419310655] [2024-11-24 00:31:34,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:31:34,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:31:34,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:31:34,168 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:31:34,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 00:31:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:31:34,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 00:31:34,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:37,125 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:37,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:31:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 24 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:31:45,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419310655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:31:45,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:31:45,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 25] total 69 [2024-11-24 00:31:45,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121338443] [2024-11-24 00:31:45,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:31:45,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-24 00:31:45,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:31:45,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-24 00:31:45,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=497, Invalid=4195, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 00:31:45,694 INFO L87 Difference]: Start difference. First operand 34252 states and 41065 transitions. Second operand has 69 states, 69 states have (on average 4.27536231884058) internal successors, (295), 69 states have internal predecessors, (295), 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) [2024-11-24 00:32:30,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:30,761 INFO L93 Difference]: Finished difference Result 62467 states and 75013 transitions. [2024-11-24 00:32:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2024-11-24 00:32:30,761 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.27536231884058) internal successors, (295), 69 states have internal predecessors, (295), 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 [2024-11-24 00:32:30,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:30,800 INFO L225 Difference]: With dead ends: 62467 [2024-11-24 00:32:30,800 INFO L226 Difference]: Without dead ends: 45022 [2024-11-24 00:32:30,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12373 ImplicationChecksByTransitivity, 37.7s TimeCoverageRelationStatistics Valid=6930, Invalid=32472, Unknown=0, NotChecked=0, Total=39402 [2024-11-24 00:32:30,814 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 2954 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2954 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:30,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2954 Valid, 2813 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-24 00:32:30,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45022 states. [2024-11-24 00:32:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45022 to 34553. [2024-11-24 00:32:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34553 states, 34552 states have (on average 1.1987149803195185) internal successors, (41418), 34552 states have internal predecessors, (41418), 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) [2024-11-24 00:32:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34553 states to 34553 states and 41418 transitions. [2024-11-24 00:32:38,919 INFO L78 Accepts]: Start accepts. Automaton has 34553 states and 41418 transitions. Word has length 107 [2024-11-24 00:32:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:38,919 INFO L471 AbstractCegarLoop]: Abstraction has 34553 states and 41418 transitions. [2024-11-24 00:32:38,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.27536231884058) internal successors, (295), 69 states have internal predecessors, (295), 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) [2024-11-24 00:32:38,919 INFO L276 IsEmpty]: Start isEmpty. Operand 34553 states and 41418 transitions. [2024-11-24 00:32:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-24 00:32:38,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:38,921 INFO L218 NwaCegarLoop]: trace histogram [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, 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] [2024-11-24 00:32:38,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 00:32:39,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:39,121 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:39,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:39,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1068786898, now seen corresponding path program 1 times [2024-11-24 00:32:39,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:32:39,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806844680] [2024-11-24 00:32:39,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:39,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:32:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:40,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:32:40,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806844680] [2024-11-24 00:32:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806844680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:32:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766922498] [2024-11-24 00:32:40,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:40,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:40,942 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:40,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e45d5a4-13a7-4e18-bcd6-ee708844f052/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 00:32:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:41,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-24 00:32:41,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 41 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:44,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:32:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766922498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:32:55,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:32:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 26] total 75 [2024-11-24 00:32:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110771814] [2024-11-24 00:32:55,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:32:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-24 00:32:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:32:55,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-24 00:32:55,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=5131, Unknown=0, NotChecked=0, Total=5550 [2024-11-24 00:32:55,363 INFO L87 Difference]: Start difference. First operand 34553 states and 41418 transitions. Second operand has 75 states, 75 states have (on average 3.8266666666666667) internal successors, (287), 75 states have internal predecessors, (287), 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)