./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label16.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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label16.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/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 b3ca7ac045e48d38881d30e6a93ef4c7dacfed0b5d9d8607f5d28bf43102d8b7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:52:35,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:52:35,630 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:52:35,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:52:35,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:52:35,688 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:52:35,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:52:35,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:52:35,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:52:35,692 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:52:35,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:52:35,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:52:35,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:52:35,694 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:52:35,694 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:52:35,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:52:35,696 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:52:35,696 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:52:35,696 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:52:35,697 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:52:35,698 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:52:35,698 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:52:35,698 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:52:35,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:52:35,699 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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/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 -> b3ca7ac045e48d38881d30e6a93ef4c7dacfed0b5d9d8607f5d28bf43102d8b7 [2024-11-13 14:52:36,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:52:36,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:52:36,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:52:36,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:52:36,127 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:52:36,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem03_label16.c Unable to find full path for "g++" [2024-11-13 14:52:38,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:52:39,164 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:52:39,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/sv-benchmarks/c/eca-rers2012/Problem03_label16.c [2024-11-13 14:52:39,192 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/data/634e247e9/80d4ea7f08e549239fa946392e2ced6c/FLAGe20e558af [2024-11-13 14:52:39,210 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/data/634e247e9/80d4ea7f08e549239fa946392e2ced6c [2024-11-13 14:52:39,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:52:39,215 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:52:39,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:52:39,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:52:39,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:52:39,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:52:39" (1/1) ... [2024-11-13 14:52:39,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9391112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:39, skipping insertion in model container [2024-11-13 14:52:39,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:52:39" (1/1) ... [2024-11-13 14:52:39,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:52:40,132 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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/sv-benchmarks/c/eca-rers2012/Problem03_label16.c[56490,56503] [2024-11-13 14:52:40,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:52:40,210 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:52:40,555 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_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/sv-benchmarks/c/eca-rers2012/Problem03_label16.c[56490,56503] [2024-11-13 14:52:40,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:52:40,596 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:52:40,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40 WrapperNode [2024-11-13 14:52:40,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:52:40,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:52:40,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:52:40,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:52:40,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,769 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-13 14:52:40,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:52:40,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:52:40,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:52:40,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:52:40,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,790 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,848 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 14:52:40,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,923 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:40,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:41,004 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:52:41,007 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:52:41,007 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:52:41,007 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:52:41,008 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (1/1) ... [2024-11-13 14:52:41,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:52:41,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:52:41,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:52:41,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:52:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:52:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:52:41,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:52:41,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:52:41,265 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:52:41,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:52:44,342 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-13 14:52:44,342 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:52:44,379 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:52:44,380 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:52:44,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:52:44 BoogieIcfgContainer [2024-11-13 14:52:44,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:52:44,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:52:44,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:52:44,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:52:44,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:52:39" (1/3) ... [2024-11-13 14:52:44,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8a9c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:52:44, skipping insertion in model container [2024-11-13 14:52:44,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:52:40" (2/3) ... [2024-11-13 14:52:44,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8a9c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:52:44, skipping insertion in model container [2024-11-13 14:52:44,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:52:44" (3/3) ... [2024-11-13 14:52:44,395 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label16.c [2024-11-13 14:52:44,416 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:52:44,420 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label16.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:52:44,531 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:52:44,551 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;@2f4a1742, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:52:44,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:52:44,561 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 14:52:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-13 14:52:44,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:44,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:44,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:44,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:44,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1592844182, now seen corresponding path program 1 times [2024-11-13 14:52:44,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:44,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908508835] [2024-11-13 14:52:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:46,155 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 14:52:46,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:46,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908508835] [2024-11-13 14:52:46,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908508835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:46,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:46,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:52:46,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500928103] [2024-11-13 14:52:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:46,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:46,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:46,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:46,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:46,212 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 14:52:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:48,079 INFO L93 Difference]: Finished difference Result 857 states and 1498 transitions. [2024-11-13 14:52:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:48,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2024-11-13 14:52:48,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:48,104 INFO L225 Difference]: With dead ends: 857 [2024-11-13 14:52:48,104 INFO L226 Difference]: Without dead ends: 462 [2024-11-13 14:52:48,113 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 14:52:48,120 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 123 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:48,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 188 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:52:48,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2024-11-13 14:52:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2024-11-13 14:52:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.5381263616557734) internal successors, (706), 459 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 14:52:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 706 transitions. [2024-11-13 14:52:48,210 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 706 transitions. Word has length 165 [2024-11-13 14:52:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:48,212 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 706 transitions. [2024-11-13 14:52:48,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 14:52:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 706 transitions. [2024-11-13 14:52:48,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-13 14:52:48,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:48,218 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:48,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:52:48,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:48,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1887261355, now seen corresponding path program 1 times [2024-11-13 14:52:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:48,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967909861] [2024-11-13 14:52:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:48,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967909861] [2024-11-13 14:52:48,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967909861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:48,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:52:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590675173] [2024-11-13 14:52:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:48,687 INFO L87 Difference]: Start difference. First operand 460 states and 706 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 14:52:50,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:50,107 INFO L93 Difference]: Finished difference Result 1344 states and 2079 transitions. [2024-11-13 14:52:50,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:50,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-13 14:52:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:50,111 INFO L225 Difference]: With dead ends: 1344 [2024-11-13 14:52:50,112 INFO L226 Difference]: Without dead ends: 886 [2024-11-13 14:52:50,113 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 14:52:50,115 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:50,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:52:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-13 14:52:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 870. [2024-11-13 14:52:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5132336018411967) internal successors, (1315), 869 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states 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 14:52:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1315 transitions. [2024-11-13 14:52:50,165 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1315 transitions. Word has length 173 [2024-11-13 14:52:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:50,166 INFO L471 AbstractCegarLoop]: Abstraction has 870 states and 1315 transitions. [2024-11-13 14:52:50,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 14:52:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1315 transitions. [2024-11-13 14:52:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-13 14:52:50,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:50,172 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:50,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:52:50,172 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:50,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash 822182945, now seen corresponding path program 1 times [2024-11-13 14:52:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:50,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378360463] [2024-11-13 14:52:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:50,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:52:50,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:50,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378360463] [2024-11-13 14:52:50,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378360463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:50,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:50,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:52:50,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349736532] [2024-11-13 14:52:50,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:50,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:50,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:50,726 INFO L87 Difference]: Start difference. First operand 870 states and 1315 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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 14:52:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:52,026 INFO L93 Difference]: Finished difference Result 2558 states and 3877 transitions. [2024-11-13 14:52:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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 180 [2024-11-13 14:52:52,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:52,043 INFO L225 Difference]: With dead ends: 2558 [2024-11-13 14:52:52,043 INFO L226 Difference]: Without dead ends: 1690 [2024-11-13 14:52:52,044 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 14:52:52,049 INFO L432 NwaCegarLoop]: 377 mSDtfsCounter, 103 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:52,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 402 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:52:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2024-11-13 14:52:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1689. [2024-11-13 14:52:52,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1688 states have (on average 1.4099526066350712) internal successors, (2380), 1688 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 14:52:52,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2380 transitions. [2024-11-13 14:52:52,126 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2380 transitions. Word has length 180 [2024-11-13 14:52:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:52,128 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2380 transitions. [2024-11-13 14:52:52,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 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 14:52:52,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2380 transitions. [2024-11-13 14:52:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-13 14:52:52,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:52,141 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:52,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:52:52,142 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:52,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:52,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1810764085, now seen corresponding path program 1 times [2024-11-13 14:52:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389457471] [2024-11-13 14:52:52,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:52,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:52:52,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:52,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389457471] [2024-11-13 14:52:52,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389457471] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:52,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:52,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:52:52,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533184324] [2024-11-13 14:52:52,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:52,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:52,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:52,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:52,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:52,799 INFO L87 Difference]: Start difference. First operand 1689 states and 2380 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 14:52:54,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:54,352 INFO L93 Difference]: Finished difference Result 5013 states and 7074 transitions. [2024-11-13 14:52:54,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:54,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 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 186 [2024-11-13 14:52:54,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:54,368 INFO L225 Difference]: With dead ends: 5013 [2024-11-13 14:52:54,369 INFO L226 Difference]: Without dead ends: 3326 [2024-11-13 14:52:54,372 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 14:52:54,373 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 216 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:54,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:52:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2024-11-13 14:52:54,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 3321. [2024-11-13 14:52:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 1.319879518072289) internal successors, (4382), 3320 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states 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 14:52:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4382 transitions. [2024-11-13 14:52:54,491 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4382 transitions. Word has length 186 [2024-11-13 14:52:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:54,492 INFO L471 AbstractCegarLoop]: Abstraction has 3321 states and 4382 transitions. [2024-11-13 14:52:54,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 14:52:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4382 transitions. [2024-11-13 14:52:54,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-13 14:52:54,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:54,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:54,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:52:54,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:54,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2122763617, now seen corresponding path program 1 times [2024-11-13 14:52:54,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:54,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888826392] [2024-11-13 14:52:54,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:54,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:54,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:54,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:54,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888826392] [2024-11-13 14:52:54,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888826392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:54,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:54,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:52:54,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875823651] [2024-11-13 14:52:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:54,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:54,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:54,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:54,926 INFO L87 Difference]: Start difference. First operand 3321 states and 4382 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 14:52:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:56,404 INFO L93 Difference]: Finished difference Result 8287 states and 11098 transitions. [2024-11-13 14:52:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2024-11-13 14:52:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:56,430 INFO L225 Difference]: With dead ends: 8287 [2024-11-13 14:52:56,430 INFO L226 Difference]: Without dead ends: 4968 [2024-11-13 14:52:56,435 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 14:52:56,437 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 219 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:56,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 200 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:52:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2024-11-13 14:52:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 4948. [2024-11-13 14:52:56,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4947 states have (on average 1.3402061855670102) internal successors, (6630), 4947 states have internal predecessors, (6630), 0 states have call successors, (0), 0 states 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 14:52:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 6630 transitions. [2024-11-13 14:52:56,588 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 6630 transitions. Word has length 191 [2024-11-13 14:52:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:56,588 INFO L471 AbstractCegarLoop]: Abstraction has 4948 states and 6630 transitions. [2024-11-13 14:52:56,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 14:52:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 6630 transitions. [2024-11-13 14:52:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-13 14:52:56,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:56,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:52:56,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:52:56,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:56,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1869785468, now seen corresponding path program 1 times [2024-11-13 14:52:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474633870] [2024-11-13 14:52:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:56,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:52:57,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:57,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474633870] [2024-11-13 14:52:57,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474633870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:57,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:52:57,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723983957] [2024-11-13 14:52:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:57,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:57,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:57,083 INFO L87 Difference]: Start difference. First operand 4948 states and 6630 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 14:52:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:52:58,553 INFO L93 Difference]: Finished difference Result 12372 states and 16544 transitions. [2024-11-13 14:52:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:52:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 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 193 [2024-11-13 14:52:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:52:58,588 INFO L225 Difference]: With dead ends: 12372 [2024-11-13 14:52:58,589 INFO L226 Difference]: Without dead ends: 7426 [2024-11-13 14:52:58,595 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 14:52:58,596 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 221 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:52:58,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 144 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:52:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7426 states. [2024-11-13 14:52:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7426 to 7420. [2024-11-13 14:52:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.332524599002561) internal successors, (9886), 7419 states have internal predecessors, (9886), 0 states have call successors, (0), 0 states 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 14:52:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 9886 transitions. [2024-11-13 14:52:58,811 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 9886 transitions. Word has length 193 [2024-11-13 14:52:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:52:58,811 INFO L471 AbstractCegarLoop]: Abstraction has 7420 states and 9886 transitions. [2024-11-13 14:52:58,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 14:52:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 9886 transitions. [2024-11-13 14:52:58,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-13 14:52:58,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:52:58,827 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:52:58,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:52:58,828 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:52:58,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:52:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2120361340, now seen corresponding path program 1 times [2024-11-13 14:52:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:52:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235769522] [2024-11-13 14:52:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:52:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:52:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:52:59,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:52:59,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235769522] [2024-11-13 14:52:59,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235769522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:52:59,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:52:59,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:52:59,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524472957] [2024-11-13 14:52:59,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:52:59,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:52:59,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:52:59,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:52:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:52:59,181 INFO L87 Difference]: Start difference. First operand 7420 states and 9886 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 14:53:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:00,569 INFO L93 Difference]: Finished difference Result 14840 states and 19774 transitions. [2024-11-13 14:53:00,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:00,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 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 194 [2024-11-13 14:53:00,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:00,612 INFO L225 Difference]: With dead ends: 14840 [2024-11-13 14:53:00,612 INFO L226 Difference]: Without dead ends: 7422 [2024-11-13 14:53:00,626 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 14:53:00,627 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 241 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:00,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 136 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:53:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2024-11-13 14:53:00,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 7420. [2024-11-13 14:53:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7420 states, 7419 states have (on average 1.2724086804151502) internal successors, (9440), 7419 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states 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 14:53:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7420 states to 7420 states and 9440 transitions. [2024-11-13 14:53:00,895 INFO L78 Accepts]: Start accepts. Automaton has 7420 states and 9440 transitions. Word has length 194 [2024-11-13 14:53:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:00,897 INFO L471 AbstractCegarLoop]: Abstraction has 7420 states and 9440 transitions. [2024-11-13 14:53:00,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 14:53:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 7420 states and 9440 transitions. [2024-11-13 14:53:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-13 14:53:00,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:00,912 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:00,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:53:00,912 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:00,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:00,913 INFO L85 PathProgramCache]: Analyzing trace with hash -57659142, now seen corresponding path program 1 times [2024-11-13 14:53:00,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:00,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732619883] [2024-11-13 14:53:00,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:00,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732619883] [2024-11-13 14:53:01,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732619883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353005524] [2024-11-13 14:53:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:01,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:01,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:01,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:01,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:01,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:01,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 14:53:02,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353005524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:02,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:02,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 14:53:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498384643] [2024-11-13 14:53:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:02,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:02,390 INFO L87 Difference]: Start difference. First operand 7420 states and 9440 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:04,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:04,015 INFO L93 Difference]: Finished difference Result 19756 states and 25346 transitions. [2024-11-13 14:53:04,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:04,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2024-11-13 14:53:04,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:04,066 INFO L225 Difference]: With dead ends: 19756 [2024-11-13 14:53:04,066 INFO L226 Difference]: Without dead ends: 12338 [2024-11-13 14:53:04,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:04,077 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:04,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 172 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:53:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12338 states. [2024-11-13 14:53:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12338 to 12321. [2024-11-13 14:53:04,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12321 states, 12320 states have (on average 1.2556006493506493) internal successors, (15469), 12320 states have internal predecessors, (15469), 0 states have call successors, (0), 0 states 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 14:53:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12321 states to 12321 states and 15469 transitions. [2024-11-13 14:53:04,404 INFO L78 Accepts]: Start accepts. Automaton has 12321 states and 15469 transitions. Word has length 200 [2024-11-13 14:53:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:04,405 INFO L471 AbstractCegarLoop]: Abstraction has 12321 states and 15469 transitions. [2024-11-13 14:53:04,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 2 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 12321 states and 15469 transitions. [2024-11-13 14:53:04,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-13 14:53:04,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:04,429 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:04,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:04,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:04,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:04,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash -782519369, now seen corresponding path program 1 times [2024-11-13 14:53:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609800210] [2024-11-13 14:53:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609800210] [2024-11-13 14:53:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609800210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:05,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020963116] [2024-11-13 14:53:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:05,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:05,170 INFO L87 Difference]: Start difference. First operand 12321 states and 15469 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:06,437 INFO L93 Difference]: Finished difference Result 28318 states and 35573 transitions. [2024-11-13 14:53:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:06,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-13 14:53:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:06,488 INFO L225 Difference]: With dead ends: 28318 [2024-11-13 14:53:06,488 INFO L226 Difference]: Without dead ends: 15999 [2024-11-13 14:53:06,497 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 14:53:06,500 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:06,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 400 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:53:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15999 states. [2024-11-13 14:53:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15999 to 15974. [2024-11-13 14:53:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15974 states, 15973 states have (on average 1.2312652601264633) internal successors, (19667), 15973 states have internal predecessors, (19667), 0 states have call successors, (0), 0 states 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 14:53:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15974 states to 15974 states and 19667 transitions. [2024-11-13 14:53:06,812 INFO L78 Accepts]: Start accepts. Automaton has 15974 states and 19667 transitions. Word has length 223 [2024-11-13 14:53:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:06,813 INFO L471 AbstractCegarLoop]: Abstraction has 15974 states and 19667 transitions. [2024-11-13 14:53:06,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 15974 states and 19667 transitions. [2024-11-13 14:53:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-13 14:53:06,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:06,835 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:06,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:53:06,835 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:06,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2122335451, now seen corresponding path program 1 times [2024-11-13 14:53:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:06,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854705115] [2024-11-13 14:53:06,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:06,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:07,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854705115] [2024-11-13 14:53:07,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854705115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:07,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:07,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:07,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553839086] [2024-11-13 14:53:07,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:07,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:07,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:07,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:07,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:07,349 INFO L87 Difference]: Start difference. First operand 15974 states and 19667 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 14:53:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:08,657 INFO L93 Difference]: Finished difference Result 42538 states and 52245 transitions. [2024-11-13 14:53:08,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 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 236 [2024-11-13 14:53:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:08,701 INFO L225 Difference]: With dead ends: 42538 [2024-11-13 14:53:08,701 INFO L226 Difference]: Without dead ends: 26566 [2024-11-13 14:53:08,710 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 14:53:08,711 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 202 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:08,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 154 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:53:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26566 states. [2024-11-13 14:53:09,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26566 to 26564. [2024-11-13 14:53:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26564 states, 26563 states have (on average 1.2063396453713813) internal successors, (32044), 26563 states have internal predecessors, (32044), 0 states have call successors, (0), 0 states 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 14:53:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26564 states to 26564 states and 32044 transitions. [2024-11-13 14:53:09,127 INFO L78 Accepts]: Start accepts. Automaton has 26564 states and 32044 transitions. Word has length 236 [2024-11-13 14:53:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:09,128 INFO L471 AbstractCegarLoop]: Abstraction has 26564 states and 32044 transitions. [2024-11-13 14:53:09,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 14:53:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 26564 states and 32044 transitions. [2024-11-13 14:53:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-13 14:53:09,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:09,162 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:09,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:53:09,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:09,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:09,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1879982939, now seen corresponding path program 1 times [2024-11-13 14:53:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:09,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164745328] [2024-11-13 14:53:09,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164745328] [2024-11-13 14:53:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164745328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023168629] [2024-11-13 14:53:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:09,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:09,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:53:10,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:10,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:10,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:53:10,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:10,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023168629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:10,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:10,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:10,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935492880] [2024-11-13 14:53:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:10,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:10,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:10,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:10,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:10,394 INFO L87 Difference]: Start difference. First operand 26564 states and 32044 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 14:53:11,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:11,632 INFO L93 Difference]: Finished difference Result 70174 states and 84487 transitions. [2024-11-13 14:53:11,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:11,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 243 [2024-11-13 14:53:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:11,731 INFO L225 Difference]: With dead ends: 70174 [2024-11-13 14:53:11,731 INFO L226 Difference]: Without dead ends: 43612 [2024-11-13 14:53:11,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 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 14:53:11,755 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:11,755 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 136 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:53:11,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43612 states. [2024-11-13 14:53:12,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43612 to 39141. [2024-11-13 14:53:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39141 states, 39140 states have (on average 1.20539090444558) internal successors, (47179), 39140 states have internal predecessors, (47179), 0 states have call successors, (0), 0 states 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 14:53:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39141 states to 39141 states and 47179 transitions. [2024-11-13 14:53:12,672 INFO L78 Accepts]: Start accepts. Automaton has 39141 states and 47179 transitions. Word has length 243 [2024-11-13 14:53:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:12,673 INFO L471 AbstractCegarLoop]: Abstraction has 39141 states and 47179 transitions. [2024-11-13 14:53:12,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 14:53:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 39141 states and 47179 transitions. [2024-11-13 14:53:12,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-13 14:53:12,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:12,718 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:12,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:53:12,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 14:53:12,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:12,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash 209420338, now seen corresponding path program 1 times [2024-11-13 14:53:12,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:12,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563891179] [2024-11-13 14:53:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 92 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:53:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563891179] [2024-11-13 14:53:13,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563891179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:13,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373837011] [2024-11-13 14:53:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:13,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:13,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:13,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:13,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:53:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:13,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:13,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 14:53:14,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373837011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:14,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255689771] [2024-11-13 14:53:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:14,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:14,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:14,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:14,320 INFO L87 Difference]: Start difference. First operand 39141 states and 47179 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 14:53:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:15,707 INFO L93 Difference]: Finished difference Result 73017 states and 87870 transitions. [2024-11-13 14:53:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:15,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 246 [2024-11-13 14:53:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:15,766 INFO L225 Difference]: With dead ends: 73017 [2024-11-13 14:53:15,766 INFO L226 Difference]: Without dead ends: 33878 [2024-11-13 14:53:15,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:15,795 INFO L432 NwaCegarLoop]: 355 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:15,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:53:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33878 states. [2024-11-13 14:53:16,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33878 to 33860. [2024-11-13 14:53:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33860 states, 33859 states have (on average 1.194305797572285) internal successors, (40438), 33859 states have internal predecessors, (40438), 0 states have call successors, (0), 0 states 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 14:53:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33860 states to 33860 states and 40438 transitions. [2024-11-13 14:53:16,465 INFO L78 Accepts]: Start accepts. Automaton has 33860 states and 40438 transitions. Word has length 246 [2024-11-13 14:53:16,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:16,466 INFO L471 AbstractCegarLoop]: Abstraction has 33860 states and 40438 transitions. [2024-11-13 14:53:16,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 14:53:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 33860 states and 40438 transitions. [2024-11-13 14:53:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-13 14:53:16,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:16,506 INFO L215 NwaCegarLoop]: trace histogram [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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:16,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:53:16,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:53:16,707 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:16,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash -424160773, now seen corresponding path program 1 times [2024-11-13 14:53:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123102109] [2024-11-13 14:53:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:16,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 129 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 14:53:17,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:17,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123102109] [2024-11-13 14:53:17,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123102109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:17,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908488652] [2024-11-13 14:53:17,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:17,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:17,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:17,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:17,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:53:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:17,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:53:17,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-13 14:53:17,933 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:17,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908488652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:17,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:17,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 14:53:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065815946] [2024-11-13 14:53:17,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:17,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:17,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:17,939 INFO L87 Difference]: Start difference. First operand 33860 states and 40438 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 14:53:18,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:18,721 INFO L93 Difference]: Finished difference Result 65435 states and 78050 transitions. [2024-11-13 14:53:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:18,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 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 280 [2024-11-13 14:53:18,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:18,768 INFO L225 Difference]: With dead ends: 65435 [2024-11-13 14:53:18,768 INFO L226 Difference]: Without dead ends: 31577 [2024-11-13 14:53:18,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:18,792 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 308 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:18,792 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 31 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:53:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31577 states. [2024-11-13 14:53:19,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31577 to 24878. [2024-11-13 14:53:19,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24878 states, 24877 states have (on average 1.1820155163403947) internal successors, (29405), 24877 states have internal predecessors, (29405), 0 states have call successors, (0), 0 states 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 14:53:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24878 states to 24878 states and 29405 transitions. [2024-11-13 14:53:19,462 INFO L78 Accepts]: Start accepts. Automaton has 24878 states and 29405 transitions. Word has length 280 [2024-11-13 14:53:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:19,464 INFO L471 AbstractCegarLoop]: Abstraction has 24878 states and 29405 transitions. [2024-11-13 14:53:19,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 14:53:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 24878 states and 29405 transitions. [2024-11-13 14:53:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-13 14:53:19,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:19,505 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, 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, 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 14:53:19,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:19,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:53:19,706 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:19,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1417930178, now seen corresponding path program 1 times [2024-11-13 14:53:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764945256] [2024-11-13 14:53:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:20,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:20,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764945256] [2024-11-13 14:53:20,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764945256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:20,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:20,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871894986] [2024-11-13 14:53:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:20,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:20,412 INFO L87 Difference]: Start difference. First operand 24878 states and 29405 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 14:53:21,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:21,890 INFO L93 Difference]: Finished difference Result 66082 states and 77895 transitions. [2024-11-13 14:53:21,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:21,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 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 310 [2024-11-13 14:53:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:21,936 INFO L225 Difference]: With dead ends: 66082 [2024-11-13 14:53:21,937 INFO L226 Difference]: Without dead ends: 41206 [2024-11-13 14:53:21,955 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 14:53:21,957 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 120 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:21,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 117 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:53:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41206 states. [2024-11-13 14:53:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41206 to 41204. [2024-11-13 14:53:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41204 states, 41203 states have (on average 1.17508433851904) internal successors, (48417), 41203 states have internal predecessors, (48417), 0 states have call successors, (0), 0 states 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 14:53:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41204 states to 41204 states and 48417 transitions. [2024-11-13 14:53:22,751 INFO L78 Accepts]: Start accepts. Automaton has 41204 states and 48417 transitions. Word has length 310 [2024-11-13 14:53:22,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:22,751 INFO L471 AbstractCegarLoop]: Abstraction has 41204 states and 48417 transitions. [2024-11-13 14:53:22,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 14:53:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 41204 states and 48417 transitions. [2024-11-13 14:53:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-11-13 14:53:22,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:22,796 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:22,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:53:22,796 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:22,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash 419073416, now seen corresponding path program 1 times [2024-11-13 14:53:22,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:22,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188879621] [2024-11-13 14:53:22,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:22,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:23,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:23,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188879621] [2024-11-13 14:53:23,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188879621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:23,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:23,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:23,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485183949] [2024-11-13 14:53:23,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:23,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:23,431 INFO L87 Difference]: Start difference. First operand 41204 states and 48417 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 14:53:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:25,220 INFO L93 Difference]: Finished difference Result 104254 states and 122643 transitions. [2024-11-13 14:53:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 317 [2024-11-13 14:53:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:25,300 INFO L225 Difference]: With dead ends: 104254 [2024-11-13 14:53:25,301 INFO L226 Difference]: Without dead ends: 63052 [2024-11-13 14:53:25,325 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 14:53:25,326 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 593 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:25,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 325 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:53:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63052 states. [2024-11-13 14:53:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63052 to 60967. [2024-11-13 14:53:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60967 states, 60966 states have (on average 1.1738017911622871) internal successors, (71562), 60966 states have internal predecessors, (71562), 0 states have call successors, (0), 0 states 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 14:53:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60967 states to 60967 states and 71562 transitions. [2024-11-13 14:53:26,297 INFO L78 Accepts]: Start accepts. Automaton has 60967 states and 71562 transitions. Word has length 317 [2024-11-13 14:53:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:26,297 INFO L471 AbstractCegarLoop]: Abstraction has 60967 states and 71562 transitions. [2024-11-13 14:53:26,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 14:53:26,297 INFO L276 IsEmpty]: Start isEmpty. Operand 60967 states and 71562 transitions. [2024-11-13 14:53:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-13 14:53:26,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:26,560 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:26,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:53:26,560 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:26,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1645959946, now seen corresponding path program 1 times [2024-11-13 14:53:26,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:26,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085776996] [2024-11-13 14:53:26,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:26,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-13 14:53:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085776996] [2024-11-13 14:53:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085776996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:27,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789937262] [2024-11-13 14:53:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:27,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:27,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:27,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:27,046 INFO L87 Difference]: Start difference. First operand 60967 states and 71562 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 14:53:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:28,524 INFO L93 Difference]: Finished difference Result 142841 states and 167962 transitions. [2024-11-13 14:53:28,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:28,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2024-11-13 14:53:28,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:28,634 INFO L225 Difference]: With dead ends: 142841 [2024-11-13 14:53:28,634 INFO L226 Difference]: Without dead ends: 81876 [2024-11-13 14:53:28,677 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 14:53:28,678 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 197 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:28,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 151 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:53:28,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81876 states. [2024-11-13 14:53:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81876 to 81064. [2024-11-13 14:53:30,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81064 states, 81063 states have (on average 1.1392620554383628) internal successors, (92352), 81063 states have internal predecessors, (92352), 0 states have call successors, (0), 0 states 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 14:53:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81064 states to 81064 states and 92352 transitions. [2024-11-13 14:53:30,228 INFO L78 Accepts]: Start accepts. Automaton has 81064 states and 92352 transitions. Word has length 329 [2024-11-13 14:53:30,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:30,228 INFO L471 AbstractCegarLoop]: Abstraction has 81064 states and 92352 transitions. [2024-11-13 14:53:30,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 14:53:30,228 INFO L276 IsEmpty]: Start isEmpty. Operand 81064 states and 92352 transitions. [2024-11-13 14:53:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-11-13 14:53:30,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:30,296 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:30,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:53:30,297 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:30,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1872913306, now seen corresponding path program 1 times [2024-11-13 14:53:30,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:30,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187427886] [2024-11-13 14:53:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:30,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-13 14:53:31,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187427886] [2024-11-13 14:53:31,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187427886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:31,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317509868] [2024-11-13 14:53:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:31,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:31,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:31,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:31,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:53:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:31,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:31,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-13 14:53:31,821 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:31,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317509868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:31,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:31,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923326987] [2024-11-13 14:53:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:31,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:31,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:31,823 INFO L87 Difference]: Start difference. First operand 81064 states and 92352 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 14:53:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:33,742 INFO L93 Difference]: Finished difference Result 173656 states and 197887 transitions. [2024-11-13 14:53:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 364 [2024-11-13 14:53:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:33,866 INFO L225 Difference]: With dead ends: 173656 [2024-11-13 14:53:33,866 INFO L226 Difference]: Without dead ends: 87722 [2024-11-13 14:53:33,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:33,907 INFO L432 NwaCegarLoop]: 343 mSDtfsCounter, 200 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:33,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 364 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:53:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87722 states. [2024-11-13 14:53:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87722 to 77557. [2024-11-13 14:53:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77557 states, 77556 states have (on average 1.0788075713033163) internal successors, (83668), 77556 states have internal predecessors, (83668), 0 states have call successors, (0), 0 states 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 14:53:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77557 states to 77557 states and 83668 transitions. [2024-11-13 14:53:35,471 INFO L78 Accepts]: Start accepts. Automaton has 77557 states and 83668 transitions. Word has length 364 [2024-11-13 14:53:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:35,471 INFO L471 AbstractCegarLoop]: Abstraction has 77557 states and 83668 transitions. [2024-11-13 14:53:35,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 14:53:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand 77557 states and 83668 transitions. [2024-11-13 14:53:35,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2024-11-13 14:53:35,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:35,509 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:35,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:53:35,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:53:35,710 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:35,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash -174131094, now seen corresponding path program 1 times [2024-11-13 14:53:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897199337] [2024-11-13 14:53:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:53:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897199337] [2024-11-13 14:53:36,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897199337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:53:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545989122] [2024-11-13 14:53:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:36,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:36,318 INFO L87 Difference]: Start difference. First operand 77557 states and 83668 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 14:53:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:37,693 INFO L93 Difference]: Finished difference Result 151664 states and 163758 transitions. [2024-11-13 14:53:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 384 [2024-11-13 14:53:37,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:37,813 INFO L225 Difference]: With dead ends: 151664 [2024-11-13 14:53:37,813 INFO L226 Difference]: Without dead ends: 73297 [2024-11-13 14:53:37,868 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 14:53:37,869 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 126 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:37,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 291 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:53:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73297 states. [2024-11-13 14:53:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73297 to 66788. [2024-11-13 14:53:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66788 states, 66787 states have (on average 1.0671837333612828) internal successors, (71274), 66787 states have internal predecessors, (71274), 0 states have call successors, (0), 0 states 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 14:53:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66788 states to 66788 states and 71274 transitions. [2024-11-13 14:53:39,284 INFO L78 Accepts]: Start accepts. Automaton has 66788 states and 71274 transitions. Word has length 384 [2024-11-13 14:53:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:39,285 INFO L471 AbstractCegarLoop]: Abstraction has 66788 states and 71274 transitions. [2024-11-13 14:53:39,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 14:53:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 66788 states and 71274 transitions. [2024-11-13 14:53:39,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2024-11-13 14:53:39,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:39,374 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 14:53:39,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:53:39,375 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:39,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1621256216, now seen corresponding path program 1 times [2024-11-13 14:53:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:39,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693295538] [2024-11-13 14:53:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:39,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 505 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-13 14:53:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693295538] [2024-11-13 14:53:40,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693295538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:40,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723045845] [2024-11-13 14:53:40,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:40,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:53:40,881 INFO L87 Difference]: Start difference. First operand 66788 states and 71274 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 14:53:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:42,409 INFO L93 Difference]: Finished difference Result 136849 states and 146093 transitions. [2024-11-13 14:53:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 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 678 [2024-11-13 14:53:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:42,481 INFO L225 Difference]: With dead ends: 136849 [2024-11-13 14:53:42,481 INFO L226 Difference]: Without dead ends: 69251 [2024-11-13 14:53:42,506 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 14:53:42,507 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 89 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:42,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 116 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:53:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69251 states. [2024-11-13 14:53:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69251 to 68000. [2024-11-13 14:53:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68000 states, 67999 states have (on average 1.0547949234547567) internal successors, (71725), 67999 states have internal predecessors, (71725), 0 states have call successors, (0), 0 states 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 14:53:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68000 states to 68000 states and 71725 transitions. [2024-11-13 14:53:43,606 INFO L78 Accepts]: Start accepts. Automaton has 68000 states and 71725 transitions. Word has length 678 [2024-11-13 14:53:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:43,606 INFO L471 AbstractCegarLoop]: Abstraction has 68000 states and 71725 transitions. [2024-11-13 14:53:43,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 2 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 14:53:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 68000 states and 71725 transitions. [2024-11-13 14:53:43,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2024-11-13 14:53:43,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:43,670 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:43,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:53:43,671 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:43,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 510918450, now seen corresponding path program 1 times [2024-11-13 14:53:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442924847] [2024-11-13 14:53:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:43,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 547 proven. 6 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2024-11-13 14:53:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442924847] [2024-11-13 14:53:45,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442924847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:45,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051779993] [2024-11-13 14:53:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:45,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:45,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:53:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:46,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:46,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1427 backedges. 1035 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-13 14:53:46,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:46,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051779993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:46,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:46,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:46,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708809526] [2024-11-13 14:53:46,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:46,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:46,789 INFO L87 Difference]: Start difference. First operand 68000 states and 71725 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 14:53:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:48,041 INFO L93 Difference]: Finished difference Result 136004 states and 143458 transitions. [2024-11-13 14:53:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:48,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 685 [2024-11-13 14:53:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:48,116 INFO L225 Difference]: With dead ends: 136004 [2024-11-13 14:53:48,116 INFO L226 Difference]: Without dead ends: 68006 [2024-11-13 14:53:48,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:48,152 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 147 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:48,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 276 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:53:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68006 states. [2024-11-13 14:53:49,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68006 to 68000. [2024-11-13 14:53:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68000 states, 67999 states have (on average 1.052883130634274) internal successors, (71595), 67999 states have internal predecessors, (71595), 0 states have call successors, (0), 0 states 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 14:53:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68000 states to 68000 states and 71595 transitions. [2024-11-13 14:53:49,354 INFO L78 Accepts]: Start accepts. Automaton has 68000 states and 71595 transitions. Word has length 685 [2024-11-13 14:53:49,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:49,355 INFO L471 AbstractCegarLoop]: Abstraction has 68000 states and 71595 transitions. [2024-11-13 14:53:49,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 14:53:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand 68000 states and 71595 transitions. [2024-11-13 14:53:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2024-11-13 14:53:49,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:49,428 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:49,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:53:49,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:49,634 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:49,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -99520547, now seen corresponding path program 1 times [2024-11-13 14:53:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:49,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118059514] [2024-11-13 14:53:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:49,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 639 proven. 6 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2024-11-13 14:53:51,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:51,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118059514] [2024-11-13 14:53:51,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118059514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:51,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885543669] [2024-11-13 14:53:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:51,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:51,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:53:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:52,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:52,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 1440 proven. 0 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-13 14:53:53,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885543669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:53,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293441837] [2024-11-13 14:53:53,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:53,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:53,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:53,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:53,013 INFO L87 Difference]: Start difference. First operand 68000 states and 71595 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 14:53:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:54,070 INFO L93 Difference]: Finished difference Result 169154 states and 178248 transitions. [2024-11-13 14:53:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:53:54,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 763 [2024-11-13 14:53:54,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:54,164 INFO L225 Difference]: With dead ends: 169154 [2024-11-13 14:53:54,164 INFO L226 Difference]: Without dead ends: 101156 [2024-11-13 14:53:54,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:54,199 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 160 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:54,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 767 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:53:54,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101156 states. [2024-11-13 14:53:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101156 to 99936. [2024-11-13 14:53:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99936 states, 99935 states have (on average 1.0501826187021563) internal successors, (104950), 99935 states have internal predecessors, (104950), 0 states have call successors, (0), 0 states 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 14:53:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99936 states to 99936 states and 104950 transitions. [2024-11-13 14:53:55,794 INFO L78 Accepts]: Start accepts. Automaton has 99936 states and 104950 transitions. Word has length 763 [2024-11-13 14:53:55,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:55,795 INFO L471 AbstractCegarLoop]: Abstraction has 99936 states and 104950 transitions. [2024-11-13 14:53:55,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 14:53:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 99936 states and 104950 transitions. [2024-11-13 14:53:55,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2024-11-13 14:53:55,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:55,877 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:55,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:53:56,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:56,078 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:56,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:56,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1257172584, now seen corresponding path program 1 times [2024-11-13 14:53:56,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:56,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919913609] [2024-11-13 14:53:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 644 proven. 6 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2024-11-13 14:53:58,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919913609] [2024-11-13 14:53:58,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919913609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:58,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720730953] [2024-11-13 14:53:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:58,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:58,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:58,041 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:58,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:53:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:58,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 1225 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:53:58,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:58,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 1307 proven. 0 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-13 14:53:58,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:53:58,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720730953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:58,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:53:58,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:53:58,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388881121] [2024-11-13 14:53:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:58,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:53:58,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:58,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:53:58,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:53:58,878 INFO L87 Difference]: Start difference. First operand 99936 states and 104950 transitions. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 14:54:00,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:00,295 INFO L93 Difference]: Finished difference Result 236922 states and 249109 transitions. [2024-11-13 14:54:00,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:54:00,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 770 [2024-11-13 14:54:00,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:00,458 INFO L225 Difference]: With dead ends: 236922 [2024-11-13 14:54:00,459 INFO L226 Difference]: Without dead ends: 134755 [2024-11-13 14:54:00,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:00,511 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 136 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:00,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 699 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:54:00,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134755 states. [2024-11-13 14:54:02,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134755 to 131710. [2024-11-13 14:54:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131710 states, 131709 states have (on average 1.0473543949160649) internal successors, (137946), 131709 states have internal predecessors, (137946), 0 states have call successors, (0), 0 states 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 14:54:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131710 states to 131710 states and 137946 transitions. [2024-11-13 14:54:03,033 INFO L78 Accepts]: Start accepts. Automaton has 131710 states and 137946 transitions. Word has length 770 [2024-11-13 14:54:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:03,034 INFO L471 AbstractCegarLoop]: Abstraction has 131710 states and 137946 transitions. [2024-11-13 14:54:03,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 14:54:03,035 INFO L276 IsEmpty]: Start isEmpty. Operand 131710 states and 137946 transitions. [2024-11-13 14:54:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2024-11-13 14:54:03,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:03,915 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:03,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:54:04,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:04,116 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:04,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1965750919, now seen corresponding path program 1 times [2024-11-13 14:54:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:54:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359960473] [2024-11-13 14:54:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:54:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 783 proven. 6 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2024-11-13 14:54:06,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:54:06,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359960473] [2024-11-13 14:54:06,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359960473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:54:06,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785532791] [2024-11-13 14:54:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:06,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:06,615 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:06,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f9a49cf-248c-46a5-8063-5c6cf03aa6a4/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:54:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:07,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 1381 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:54:07,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2837 backedges. 1906 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-13 14:54:07,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785532791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:07,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:54:07,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-13 14:54:07,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663036773] [2024-11-13 14:54:07,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:07,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:54:07,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:54:07,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:54:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:07,471 INFO L87 Difference]: Start difference. First operand 131710 states and 137946 transitions. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 14:54:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:09,025 INFO L93 Difference]: Finished difference Result 350435 states and 366932 transitions. [2024-11-13 14:54:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:54:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 903 [2024-11-13 14:54:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:09,322 INFO L225 Difference]: With dead ends: 350435 [2024-11-13 14:54:09,322 INFO L226 Difference]: Without dead ends: 215479 [2024-11-13 14:54:09,423 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 905 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:09,423 INFO L432 NwaCegarLoop]: 522 mSDtfsCounter, 165 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:09,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 744 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:54:10,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215479 states.