./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label49.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label49.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd --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 ed3a92c264decf07ef3fe9934b7adac3cfdd66377f9f8a3c9a530596f6e34d7c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:45:23,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:45:23,924 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:45:23,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:45:23,937 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:45:23,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:45:23,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:45:23,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:45:23,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:45:23,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:45:23,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:45:23,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:45:23,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:45:23,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:45:23,991 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:45:23,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:45:23,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:45:23,992 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:45:23,992 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:45:23,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:45:23,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:45:23,993 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:45:23,993 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:45:23,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:45:23,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:45:23,994 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:45:23,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:45:23,994 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:45:23,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:45:23,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:45:23,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:45:23,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:45:23,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:45:23,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:45:23,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:45:23,997 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:45:23,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:45:23,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:45:23,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:45:23,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:45:23,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:45:23,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:45:23,998 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_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd 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 -> ed3a92c264decf07ef3fe9934b7adac3cfdd66377f9f8a3c9a530596f6e34d7c [2024-11-13 13:45:24,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:45:24,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:45:24,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:45:24,404 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:45:24,405 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:45:24,406 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem14_label49.c Unable to find full path for "g++" [2024-11-13 13:45:26,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:45:27,351 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:45:27,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/sv-benchmarks/c/eca-rers2012/Problem14_label49.c [2024-11-13 13:45:27,387 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/data/b9ec541d5/c3c282b424824e939d109f850fa71945/FLAG666e0dbf8 [2024-11-13 13:45:27,425 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/data/b9ec541d5/c3c282b424824e939d109f850fa71945 [2024-11-13 13:45:27,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:45:27,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:45:27,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:45:27,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:45:27,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:45:27,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:45:27" (1/1) ... [2024-11-13 13:45:27,447 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1234d066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:27, skipping insertion in model container [2024-11-13 13:45:27,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:45:27" (1/1) ... [2024-11-13 13:45:27,520 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:45:27,875 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_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/sv-benchmarks/c/eca-rers2012/Problem14_label49.c[6042,6055] [2024-11-13 13:45:28,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:45:28,154 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:45:28,187 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_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/sv-benchmarks/c/eca-rers2012/Problem14_label49.c[6042,6055] [2024-11-13 13:45:28,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:45:28,346 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:45:28,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28 WrapperNode [2024-11-13 13:45:28,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:45:28,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:45:28,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:45:28,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:45:28,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,464 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2024-11-13 13:45:28,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:45:28,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:45:28,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:45:28,466 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:45:28,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,536 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]. [2024-11-13 13:45:28,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,585 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,592 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,638 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:45:28,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:45:28,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:45:28,639 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:45:28,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (1/1) ... [2024-11-13 13:45:28,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:45:28,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:45:28,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:45:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:45:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:45:28,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:45:28,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:45:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:45:28,838 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:45:28,842 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:45:31,273 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-11-13 13:45:31,273 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:45:31,306 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:45:31,307 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:45:31,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:45:31 BoogieIcfgContainer [2024-11-13 13:45:31,308 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:45:31,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:45:31,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:45:31,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:45:31,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:45:27" (1/3) ... [2024-11-13 13:45:31,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b4435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:45:31, skipping insertion in model container [2024-11-13 13:45:31,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:45:28" (2/3) ... [2024-11-13 13:45:31,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b4435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:45:31, skipping insertion in model container [2024-11-13 13:45:31,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:45:31" (3/3) ... [2024-11-13 13:45:31,328 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label49.c [2024-11-13 13:45:31,353 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:45:31,355 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem14_label49.c that has 1 procedures, 245 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:45:31,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:45:31,502 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;@26313c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:45:31,503 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:45:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 13:45:31,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:31,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:31,524 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:31,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1470937056, now seen corresponding path program 1 times [2024-11-13 13:45:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:31,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990736623] [2024-11-13 13:45:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:31,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:45:32,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:32,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990736623] [2024-11-13 13:45:32,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990736623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:32,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:32,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:45:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244469367] [2024-11-13 13:45:32,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:32,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:32,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:32,337 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:34,649 INFO L93 Difference]: Finished difference Result 685 states and 1216 transitions. [2024-11-13 13:45:34,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:34,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-13 13:45:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:34,682 INFO L225 Difference]: With dead ends: 685 [2024-11-13 13:45:34,683 INFO L226 Difference]: Without dead ends: 360 [2024-11-13 13:45:34,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:34,696 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 159 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:34,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 139 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 13:45:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-11-13 13:45:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-11-13 13:45:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:34,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2024-11-13 13:45:34,851 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 59 [2024-11-13 13:45:34,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:34,852 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2024-11-13 13:45:34,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2024-11-13 13:45:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-13 13:45:34,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:34,865 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:34,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:45:34,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:34,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -647157713, now seen corresponding path program 1 times [2024-11-13 13:45:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:34,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159290714] [2024-11-13 13:45:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:45:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:36,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159290714] [2024-11-13 13:45:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159290714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:36,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:36,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714057497] [2024-11-13 13:45:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:36,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:45:36,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:36,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:45:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:45:36,065 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:38,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:38,137 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2024-11-13 13:45:38,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:45:38,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-11-13 13:45:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:38,144 INFO L225 Difference]: With dead ends: 1074 [2024-11-13 13:45:38,144 INFO L226 Difference]: Without dead ends: 716 [2024-11-13 13:45:38,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:45:38,151 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 419 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:38,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 121 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 13:45:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-13 13:45:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2024-11-13 13:45:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2615384615384615) internal successors, (902), 715 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2024-11-13 13:45:38,228 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 138 [2024-11-13 13:45:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:38,228 INFO L471 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2024-11-13 13:45:38,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2024-11-13 13:45:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-13 13:45:38,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:38,241 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:38,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:45:38,241 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:38,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1002187696, now seen corresponding path program 1 times [2024-11-13 13:45:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806298354] [2024-11-13 13:45:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:38,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:38,637 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:45:38,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:38,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806298354] [2024-11-13 13:45:38,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806298354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:38,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:38,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:38,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305122725] [2024-11-13 13:45:38,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:38,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:38,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:38,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:38,640 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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) [2024-11-13 13:45:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:39,979 INFO L93 Difference]: Finished difference Result 1074 states and 1410 transitions. [2024-11-13 13:45:39,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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 164 [2024-11-13 13:45:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:39,987 INFO L225 Difference]: With dead ends: 1074 [2024-11-13 13:45:39,987 INFO L226 Difference]: Without dead ends: 1072 [2024-11-13 13:45:39,988 INFO L431 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 [2024-11-13 13:45:39,990 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 126 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:39,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 36 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 13:45:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-11-13 13:45:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2024-11-13 13:45:40,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.3370660694288914) internal successors, (1194), 893 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1194 transitions. [2024-11-13 13:45:40,066 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1194 transitions. Word has length 164 [2024-11-13 13:45:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:40,067 INFO L471 AbstractCegarLoop]: Abstraction has 894 states and 1194 transitions. [2024-11-13 13:45:40,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 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) [2024-11-13 13:45:40,071 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1194 transitions. [2024-11-13 13:45:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-13 13:45:40,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:40,084 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:40,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:45:40,085 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:40,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1590409050, now seen corresponding path program 1 times [2024-11-13 13:45:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351513460] [2024-11-13 13:45:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:40,763 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 13:45:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:40,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351513460] [2024-11-13 13:45:40,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351513460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:40,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653938569] [2024-11-13 13:45:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:40,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:45:40,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:45:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:45:40,776 INFO L87 Difference]: Start difference. First operand 894 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:42,294 INFO L93 Difference]: Finished difference Result 1993 states and 2629 transitions. [2024-11-13 13:45:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:45:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 230 [2024-11-13 13:45:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:42,303 INFO L225 Difference]: With dead ends: 1993 [2024-11-13 13:45:42,303 INFO L226 Difference]: Without dead ends: 1072 [2024-11-13 13:45:42,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:45:42,307 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 102 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:42,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 121 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 13:45:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-11-13 13:45:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2024-11-13 13:45:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2024-11-13 13:45:42,365 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 230 [2024-11-13 13:45:42,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:42,365 INFO L471 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2024-11-13 13:45:42,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:42,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2024-11-13 13:45:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2024-11-13 13:45:42,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:42,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:42,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:45:42,375 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:42,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:42,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1159301888, now seen corresponding path program 1 times [2024-11-13 13:45:42,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:42,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968082480] [2024-11-13 13:45:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:45:43,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968082480] [2024-11-13 13:45:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968082480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:45:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535006811] [2024-11-13 13:45:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:43,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:45:43,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:45:43,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:45:43,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:45:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:43,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:45:43,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:45:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-13 13:45:44,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:45:44,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535006811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:44,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:45:44,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-13 13:45:44,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354754559] [2024-11-13 13:45:44,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:44,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:44,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:44,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:44,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:45:44,035 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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) [2024-11-13 13:45:45,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:45,210 INFO L93 Difference]: Finished difference Result 2498 states and 3033 transitions. [2024-11-13 13:45:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:45,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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 230 [2024-11-13 13:45:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:45,219 INFO L225 Difference]: With dead ends: 2498 [2024-11-13 13:45:45,219 INFO L226 Difference]: Without dead ends: 1428 [2024-11-13 13:45:45,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:45:45,222 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 84 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:45,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 47 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:45:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2024-11-13 13:45:45,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1250. [2024-11-13 13:45:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1249 states have (on average 1.2041633306645316) internal successors, (1504), 1249 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1504 transitions. [2024-11-13 13:45:45,280 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1504 transitions. Word has length 230 [2024-11-13 13:45:45,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:45,281 INFO L471 AbstractCegarLoop]: Abstraction has 1250 states and 1504 transitions. [2024-11-13 13:45:45,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 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) [2024-11-13 13:45:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1504 transitions. [2024-11-13 13:45:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-13 13:45:45,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:45,286 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:45,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:45:45,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:45:45,488 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:45,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:45,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1938884346, now seen corresponding path program 1 times [2024-11-13 13:45:45,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:45,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152404597] [2024-11-13 13:45:45,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:45,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:45:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152404597] [2024-11-13 13:45:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152404597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:46,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841365824] [2024-11-13 13:45:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:46,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:46,019 INFO L87 Difference]: Start difference. First operand 1250 states and 1504 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:47,233 INFO L93 Difference]: Finished difference Result 3032 states and 3654 transitions. [2024-11-13 13:45:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2024-11-13 13:45:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:47,249 INFO L225 Difference]: With dead ends: 3032 [2024-11-13 13:45:47,249 INFO L226 Difference]: Without dead ends: 1784 [2024-11-13 13:45:47,251 INFO L431 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 [2024-11-13 13:45:47,254 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 111 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:47,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 77 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:45:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2024-11-13 13:45:47,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1784. [2024-11-13 13:45:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1654514862591139) internal successors, (2078), 1783 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2078 transitions. [2024-11-13 13:45:47,324 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2078 transitions. Word has length 233 [2024-11-13 13:45:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:47,325 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 2078 transitions. [2024-11-13 13:45:47,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2078 transitions. [2024-11-13 13:45:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2024-11-13 13:45:47,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:47,337 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:47,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:45:47,337 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:47,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash -867911793, now seen corresponding path program 1 times [2024-11-13 13:45:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179941168] [2024-11-13 13:45:47,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2024-11-13 13:45:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179941168] [2024-11-13 13:45:47,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179941168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:47,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331844660] [2024-11-13 13:45:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:47,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:45:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:45:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:45:47,973 INFO L87 Difference]: Start difference. First operand 1784 states and 2078 transitions. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 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) [2024-11-13 13:45:49,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:49,081 INFO L93 Difference]: Finished difference Result 3624 states and 4235 transitions. [2024-11-13 13:45:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:45:49,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 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 350 [2024-11-13 13:45:49,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:49,090 INFO L225 Difference]: With dead ends: 3624 [2024-11-13 13:45:49,091 INFO L226 Difference]: Without dead ends: 1962 [2024-11-13 13:45:49,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:45:49,094 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 141 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:49,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 17 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 13:45:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2024-11-13 13:45:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2024-11-13 13:45:49,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.1144139091418956) internal successors, (1987), 1783 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 1987 transitions. [2024-11-13 13:45:49,162 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 1987 transitions. Word has length 350 [2024-11-13 13:45:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:49,163 INFO L471 AbstractCegarLoop]: Abstraction has 1784 states and 1987 transitions. [2024-11-13 13:45:49,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 3 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) [2024-11-13 13:45:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 1987 transitions. [2024-11-13 13:45:49,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-13 13:45:49,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:49,175 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:49,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:45:49,175 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:49,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash -872051020, now seen corresponding path program 1 times [2024-11-13 13:45:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:49,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656622238] [2024-11-13 13:45:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-13 13:45:49,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656622238] [2024-11-13 13:45:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656622238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:45:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254444157] [2024-11-13 13:45:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:49,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:45:49,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:45:49,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:45:49,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:45:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:50,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:45:50,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:45:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-13 13:45:51,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:45:51,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254444157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:51,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:45:51,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 13:45:51,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458525857] [2024-11-13 13:45:51,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:51,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:45:51,302 INFO L87 Difference]: Start difference. First operand 1784 states and 1987 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:52,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:52,087 INFO L93 Difference]: Finished difference Result 2854 states and 3126 transitions. [2024-11-13 13:45:52,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:52,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 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 439 [2024-11-13 13:45:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:52,101 INFO L225 Difference]: With dead ends: 2854 [2024-11-13 13:45:52,101 INFO L226 Difference]: Without dead ends: 2852 [2024-11-13 13:45:52,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:45:52,103 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:52,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 11 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 13:45:52,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2852 states. [2024-11-13 13:45:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2852 to 1606. [2024-11-13 13:45:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.0909657320872275) internal successors, (1751), 1605 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1751 transitions. [2024-11-13 13:45:52,161 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1751 transitions. Word has length 439 [2024-11-13 13:45:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:52,162 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 1751 transitions. [2024-11-13 13:45:52,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1751 transitions. [2024-11-13 13:45:52,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-11-13 13:45:52,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:52,175 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:52,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:45:52,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:45:52,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:52,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 993796486, now seen corresponding path program 1 times [2024-11-13 13:45:52,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:52,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646299712] [2024-11-13 13:45:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:52,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-13 13:45:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:53,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646299712] [2024-11-13 13:45:53,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646299712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:53,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:53,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303944271] [2024-11-13 13:45:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:53,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:53,085 INFO L87 Difference]: Start difference. First operand 1606 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:54,101 INFO L93 Difference]: Finished difference Result 3922 states and 4309 transitions. [2024-11-13 13:45:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 445 [2024-11-13 13:45:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:54,114 INFO L225 Difference]: With dead ends: 3922 [2024-11-13 13:45:54,114 INFO L226 Difference]: Without dead ends: 2496 [2024-11-13 13:45:54,117 INFO L431 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 [2024-11-13 13:45:54,119 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 110 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:54,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 245 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:45:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2024-11-13 13:45:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1962. [2024-11-13 13:45:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.075981642019378) internal successors, (2110), 1961 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2110 transitions. [2024-11-13 13:45:54,198 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2110 transitions. Word has length 445 [2024-11-13 13:45:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:54,199 INFO L471 AbstractCegarLoop]: Abstraction has 1962 states and 2110 transitions. [2024-11-13 13:45:54,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:54,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2110 transitions. [2024-11-13 13:45:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2024-11-13 13:45:54,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:54,214 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:54,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:45:54,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:54,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:54,215 INFO L85 PathProgramCache]: Analyzing trace with hash -754211698, now seen corresponding path program 1 times [2024-11-13 13:45:54,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:54,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016755873] [2024-11-13 13:45:54,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:54,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-13 13:45:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:54,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016755873] [2024-11-13 13:45:54,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016755873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:54,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:54,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919820646] [2024-11-13 13:45:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:54,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:54,856 INFO L87 Difference]: Start difference. First operand 1962 states and 2110 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:55,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:55,843 INFO L93 Difference]: Finished difference Result 4456 states and 4861 transitions. [2024-11-13 13:45:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 452 [2024-11-13 13:45:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:55,856 INFO L225 Difference]: With dead ends: 4456 [2024-11-13 13:45:55,856 INFO L226 Difference]: Without dead ends: 2674 [2024-11-13 13:45:55,859 INFO L431 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 [2024-11-13 13:45:55,860 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 113 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:55,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 202 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:45:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2024-11-13 13:45:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2024-11-13 13:45:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0819304152637486) internal successors, (2892), 2673 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2892 transitions. [2024-11-13 13:45:55,980 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2892 transitions. Word has length 452 [2024-11-13 13:45:55,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:55,981 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 2892 transitions. [2024-11-13 13:45:55,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:55,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2892 transitions. [2024-11-13 13:45:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-11-13 13:45:55,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:55,995 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:55,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:45:55,995 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:55,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1904764378, now seen corresponding path program 1 times [2024-11-13 13:45:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464124039] [2024-11-13 13:45:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2024-11-13 13:45:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:56,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464124039] [2024-11-13 13:45:56,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464124039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:56,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:45:56,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:45:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322096904] [2024-11-13 13:45:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:56,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:56,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:45:56,427 INFO L87 Difference]: Start difference. First operand 2674 states and 2892 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:45:57,425 INFO L93 Difference]: Finished difference Result 6414 states and 7027 transitions. [2024-11-13 13:45:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:45:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 493 [2024-11-13 13:45:57,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:45:57,444 INFO L225 Difference]: With dead ends: 6414 [2024-11-13 13:45:57,444 INFO L226 Difference]: Without dead ends: 3920 [2024-11-13 13:45:57,448 INFO L431 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 [2024-11-13 13:45:57,449 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:45:57,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 52 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:45:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2024-11-13 13:45:57,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 3564. [2024-11-13 13:45:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.077743474600056) internal successors, (3840), 3563 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3840 transitions. [2024-11-13 13:45:57,565 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3840 transitions. Word has length 493 [2024-11-13 13:45:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:45:57,566 INFO L471 AbstractCegarLoop]: Abstraction has 3564 states and 3840 transitions. [2024-11-13 13:45:57,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:45:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3840 transitions. [2024-11-13 13:45:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-13 13:45:57,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:45:57,575 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:45:57,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:45:57,575 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:45:57,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:45:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1575345813, now seen corresponding path program 1 times [2024-11-13 13:45:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:45:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390951748] [2024-11-13 13:45:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:45:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 1154 proven. 104 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-13 13:45:58,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:45:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390951748] [2024-11-13 13:45:58,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390951748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:45:58,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299945458] [2024-11-13 13:45:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:45:58,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:45:58,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:45:58,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:45:58,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:45:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:45:59,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:45:59,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:45:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 1288 trivial. 0 not checked. [2024-11-13 13:45:59,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:45:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299945458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:45:59,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:45:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 13:45:59,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102181291] [2024-11-13 13:45:59,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:45:59,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:45:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:45:59,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:45:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:45:59,441 INFO L87 Difference]: Start difference. First operand 3564 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:00,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:46:00,365 INFO L93 Difference]: Finished difference Result 7838 states and 8458 transitions. [2024-11-13 13:46:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 638 [2024-11-13 13:46:00,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:46:00,381 INFO L225 Difference]: With dead ends: 7838 [2024-11-13 13:46:00,381 INFO L226 Difference]: Without dead ends: 3564 [2024-11-13 13:46:00,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:46:00,388 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 122 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:46:00,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 247 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:46:00,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2024-11-13 13:46:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3030. [2024-11-13 13:46:00,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 1.0686695278969958) internal successors, (3237), 3029 states have internal predecessors, (3237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 3237 transitions. [2024-11-13 13:46:00,479 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 3237 transitions. Word has length 638 [2024-11-13 13:46:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:46:00,481 INFO L471 AbstractCegarLoop]: Abstraction has 3030 states and 3237 transitions. [2024-11-13 13:46:00,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 3237 transitions. [2024-11-13 13:46:00,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2024-11-13 13:46:00,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:46:00,494 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 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] [2024-11-13 13:46:00,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:46:00,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:46:00,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:46:00,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:46:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 759960228, now seen corresponding path program 1 times [2024-11-13 13:46:00,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:46:00,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200343231] [2024-11-13 13:46:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:00,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:46:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 1313 proven. 104 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2024-11-13 13:46:02,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:46:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200343231] [2024-11-13 13:46:02,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200343231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:46:02,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880578854] [2024-11-13 13:46:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:46:02,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:46:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:46:02,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:46:02,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:46:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:46:02,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:46:02,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:46:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1788 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2024-11-13 13:46:02,695 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:46:02,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880578854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:46:02,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:46:02,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 13:46:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111548701] [2024-11-13 13:46:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:46:02,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:46:02,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:46:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:46:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:46:02,699 INFO L87 Difference]: Start difference. First operand 3030 states and 3237 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:46:03,572 INFO L93 Difference]: Finished difference Result 6768 states and 7304 transitions. [2024-11-13 13:46:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:46:03,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 708 [2024-11-13 13:46:03,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:46:03,575 INFO L225 Difference]: With dead ends: 6768 [2024-11-13 13:46:03,575 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 13:46:03,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:46:03,581 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 128 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:46:03,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 219 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:46:03,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 13:46:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 13:46:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 13:46:03,584 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 708 [2024-11-13 13:46:03,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:46:03,584 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 13:46:03,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:46:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 13:46:03,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 13:46:03,589 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:46:03,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:46:03,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:46:03,795 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:46:03,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 13:46:04,890 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:46:04,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:46:04 BoogieIcfgContainer [2024-11-13 13:46:04,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:46:04,920 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:46:04,920 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:46:04,921 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:46:04,922 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:45:31" (3/4) ... [2024-11-13 13:46:04,926 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:46:04,962 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-13 13:46:04,963 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 13:46:04,965 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 13:46:04,967 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 13:46:05,268 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:46:05,269 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:46:05,269 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:46:05,271 INFO L158 Benchmark]: Toolchain (without parser) took 37836.42ms. Allocated memory was 117.4MB in the beginning and 503.3MB in the end (delta: 385.9MB). Free memory was 90.9MB in the beginning and 401.1MB in the end (delta: -310.2MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,272 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:46:05,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 911.41ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 58.8MB in the end (delta: 32.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.03ms. Allocated memory is still 117.4MB. Free memory was 58.8MB in the beginning and 49.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,275 INFO L158 Benchmark]: Boogie Preprocessor took 172.76ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 86.3MB in the end (delta: -37.0MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,275 INFO L158 Benchmark]: RCFGBuilder took 2668.71ms. Allocated memory is still 117.4MB. Free memory was 85.8MB in the beginning and 70.9MB in the end (delta: 14.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,276 INFO L158 Benchmark]: TraceAbstraction took 33603.97ms. Allocated memory was 117.4MB in the beginning and 503.3MB in the end (delta: 385.9MB). Free memory was 70.2MB in the beginning and 413.9MB in the end (delta: -343.7MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,277 INFO L158 Benchmark]: Witness Printer took 349.08ms. Allocated memory is still 503.3MB. Free memory was 413.9MB in the beginning and 401.1MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:46:05,284 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 911.41ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 58.8MB in the end (delta: 32.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.03ms. Allocated memory is still 117.4MB. Free memory was 58.8MB in the beginning and 49.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 172.76ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 86.3MB in the end (delta: -37.0MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2668.71ms. Allocated memory is still 117.4MB. Free memory was 85.8MB in the beginning and 70.9MB in the end (delta: 14.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * TraceAbstraction took 33603.97ms. Allocated memory was 117.4MB in the beginning and 503.3MB in the end (delta: 385.9MB). Free memory was 70.2MB in the beginning and 413.9MB in the end (delta: -343.7MB). Peak memory consumption was 197.4MB. Max. memory is 16.1GB. * Witness Printer took 349.08ms. Allocated memory is still 503.3MB. Free memory was 413.9MB in the beginning and 401.1MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 191]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.4s, OverallIterations: 13, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1714 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1714 mSDsluCounter, 1534 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 73 mSDsCounter, 853 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6871 IncrementalHoareTripleChecker+Invalid, 7724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 853 mSolverCounterUnsat, 1461 mSDtfsCounter, 6871 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2055 GetRequests, 2025 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3564occurred in iteration=11, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 3204 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 6594 NumberOfCodeBlocks, 6594 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6577 ConstructedInterpolants, 0 QuantifiedInterpolants, 24179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2580 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 11110/11431 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((a15 <= 8) && (((long long) 49 + a12) <= 0)) && (10 <= a21)) || ((a24 == 1) && (a15 <= 6))) || ((a24 == 1) && (8 <= a15))) || ((a24 == 1) && (81 <= a12))) || ((a12 <= 11) && (a24 == 1))) || ((a24 == 1) && (7 <= a21))) || ((a15 <= 6) && (((long long) 49 + a12) <= 0))) RESULT: Ultimate proved your program to be correct! [2024-11-13 13:46:05,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_380bbd4d-6ce9-48d9-8e5e-82207d3a92ca/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE