./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:39:17,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:39:17,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:39:17,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:39:17,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:39:17,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:39:17,735 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:39:17,737 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:39:17,737 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:39:17,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:39:17,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:39:17,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:39:17,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:39:17,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:39:17,743 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:39:17,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:39:17,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:39:17,744 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:39:17,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:39:17,750 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:39:17,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:39:17,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:39:17,753 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:39:17,753 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:39:17,754 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:39:17,754 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:39:17,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:39:17,754 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:39:17,754 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:39:17,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:39:17,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:39:17,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:39:17,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:39:17,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:39:17,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:39:17,756 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:39:17,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:39:17,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:39:17,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:39:17,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:39:17,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:39:17,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:39:17,763 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94e951826a6b890c42a47666caa0401c27bf1b0a09941efa99a0e4bb1e9e9065 [2024-11-18 15:39:18,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:39:18,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:39:18,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:39:18,212 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:39:18,213 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:39:18,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2024-11-18 15:39:20,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:39:20,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:39:20,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c [2024-11-18 15:39:21,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa91011fb/6b93df257893445abb5908ab5660d0fc/FLAG59ea45ce3 [2024-11-18 15:39:21,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa91011fb/6b93df257893445abb5908ab5660d0fc [2024-11-18 15:39:21,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:39:21,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:39:21,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:39:21,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:39:21,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:39:21,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:21" (1/1) ... [2024-11-18 15:39:21,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78c269ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:21, skipping insertion in model container [2024-11-18 15:39:21,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:39:21" (1/1) ... [2024-11-18 15:39:21,775 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:39:23,227 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[382357,382370] [2024-11-18 15:39:23,273 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[383339,383352] [2024-11-18 15:39:23,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:39:23,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:39:24,152 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[382357,382370] [2024-11-18 15:39:24,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label46+token_ring.02.cil-2.c[383339,383352] [2024-11-18 15:39:24,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:39:24,216 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:39:24,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24 WrapperNode [2024-11-18 15:39:24,217 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:39:24,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:39:24,219 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:39:24,219 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:39:24,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,610 INFO L138 Inliner]: procedures = 48, calls = 48, calls flagged for inlining = 25, calls inlined = 25, statements flattened = 12639 [2024-11-18 15:39:24,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:39:24,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:39:24,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:39:24,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:39:24,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,669 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,846 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]. [2024-11-18 15:39:24,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:24,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:25,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:25,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:25,142 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:25,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:39:25,206 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:39:25,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:39:25,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:39:25,207 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (1/1) ... [2024-11-18 15:39:25,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:39:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:25,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:39:25,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:39:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:39:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-18 15:39:25,288 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-18 15:39:25,288 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:39:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:39:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:39:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:39:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:39:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:39:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:39:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:39:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:39:25,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:39:25,389 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:39:25,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:39:34,618 INFO L? ?]: Removed 1699 outVars from TransFormulas that were not future-live. [2024-11-18 15:39:34,619 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:39:34,717 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:39:34,717 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-18 15:39:34,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:34 BoogieIcfgContainer [2024-11-18 15:39:34,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:39:34,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:39:34,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:39:34,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:39:34,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:39:21" (1/3) ... [2024-11-18 15:39:34,729 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7921e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:34, skipping insertion in model container [2024-11-18 15:39:34,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:39:24" (2/3) ... [2024-11-18 15:39:34,732 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7921e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:39:34, skipping insertion in model container [2024-11-18 15:39:34,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:39:34" (3/3) ... [2024-11-18 15:39:34,734 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.02.cil-2.c [2024-11-18 15:39:34,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:39:34,769 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:39:34,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:39:34,991 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;@5251716d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:39:34,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:39:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-18 15:39:35,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:35,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:35,041 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] [2024-11-18 15:39:35,045 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:35,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 931332088, now seen corresponding path program 1 times [2024-11-18 15:39:35,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259431436] [2024-11-18 15:39:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:35,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:35,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259431436] [2024-11-18 15:39:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259431436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:35,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:35,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:39:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500068326] [2024-11-18 15:39:35,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:35,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:39:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:35,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:39:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:39:35,848 INFO L87 Difference]: Start difference. First operand has 2326 states, 2298 states have (on average 1.8563968668407311) internal successors, (4266), 2303 states have internal predecessors, (4266), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:36,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:36,371 INFO L93 Difference]: Finished difference Result 4779 states and 8807 transitions. [2024-11-18 15:39:36,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:39:36,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:36,394 INFO L225 Difference]: With dead ends: 4779 [2024-11-18 15:39:36,394 INFO L226 Difference]: Without dead ends: 2393 [2024-11-18 15:39:36,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:36,403 INFO L432 NwaCegarLoop]: 4184 mSDtfsCounter, 4343 mSDsluCounter, 8439 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 12623 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:36,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 12623 Invalid, 267 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:39:36,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2024-11-18 15:39:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2382. [2024-11-18 15:39:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2338 states have (on average 1.8319076133447392) internal successors, (4283), 2342 states have internal predecessors, (4283), 29 states have call successors, (29), 13 states have call predecessors, (29), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-11-18 15:39:36,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 4340 transitions. [2024-11-18 15:39:36,593 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 4340 transitions. Word has length 69 [2024-11-18 15:39:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:36,593 INFO L471 AbstractCegarLoop]: Abstraction has 2382 states and 4340 transitions. [2024-11-18 15:39:36,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 4340 transitions. [2024-11-18 15:39:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:36,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:36,597 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] [2024-11-18 15:39:36,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:39:36,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:36,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1034046452, now seen corresponding path program 1 times [2024-11-18 15:39:36,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:36,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680763920] [2024-11-18 15:39:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:36,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680763920] [2024-11-18 15:39:36,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680763920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:36,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705383491] [2024-11-18 15:39:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:36,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:36,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:36,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:36,819 INFO L87 Difference]: Start difference. First operand 2382 states and 4340 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:37,188 INFO L93 Difference]: Finished difference Result 2785 states and 4935 transitions. [2024-11-18 15:39:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:37,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:37,197 INFO L225 Difference]: With dead ends: 2785 [2024-11-18 15:39:37,198 INFO L226 Difference]: Without dead ends: 2534 [2024-11-18 15:39:37,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:37,200 INFO L432 NwaCegarLoop]: 4215 mSDtfsCounter, 4265 mSDsluCounter, 12613 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 16828 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:37,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4275 Valid, 16828 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:39:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2534 states. [2024-11-18 15:39:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2534 to 2499. [2024-11-18 15:39:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 2437 states have (on average 1.816988100123102) internal successors, (4428), 2442 states have internal predecessors, (4428), 40 states have call successors, (40), 19 states have call predecessors, (40), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2024-11-18 15:39:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4510 transitions. [2024-11-18 15:39:37,245 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4510 transitions. Word has length 69 [2024-11-18 15:39:37,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:37,246 INFO L471 AbstractCegarLoop]: Abstraction has 2499 states and 4510 transitions. [2024-11-18 15:39:37,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4510 transitions. [2024-11-18 15:39:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:37,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:37,248 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] [2024-11-18 15:39:37,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:39:37,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:37,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1874135434, now seen corresponding path program 1 times [2024-11-18 15:39:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:37,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133260128] [2024-11-18 15:39:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:37,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:37,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:37,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:37,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133260128] [2024-11-18 15:39:37,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133260128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:37,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:37,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:37,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30370046] [2024-11-18 15:39:37,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:37,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:37,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:37,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:37,369 INFO L87 Difference]: Start difference. First operand 2499 states and 4510 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:37,744 INFO L93 Difference]: Finished difference Result 3146 states and 5464 transitions. [2024-11-18 15:39:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:37,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:37,768 INFO L225 Difference]: With dead ends: 3146 [2024-11-18 15:39:37,768 INFO L226 Difference]: Without dead ends: 2778 [2024-11-18 15:39:37,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:37,775 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4273 mSDsluCounter, 12387 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 16503 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:37,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 16503 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:39:37,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-11-18 15:39:37,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2742. [2024-11-18 15:39:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2742 states, 2642 states have (on average 1.7899318697956095) internal successors, (4729), 2651 states have internal predecessors, (4729), 62 states have call successors, (62), 31 states have call predecessors, (62), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2024-11-18 15:39:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 4867 transitions. [2024-11-18 15:39:37,914 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 4867 transitions. Word has length 69 [2024-11-18 15:39:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:37,914 INFO L471 AbstractCegarLoop]: Abstraction has 2742 states and 4867 transitions. [2024-11-18 15:39:37,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 4867 transitions. [2024-11-18 15:39:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:37,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:37,924 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] [2024-11-18 15:39:37,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:39:37,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:37,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -998116428, now seen corresponding path program 1 times [2024-11-18 15:39:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492334251] [2024-11-18 15:39:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:38,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:38,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492334251] [2024-11-18 15:39:38,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492334251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:38,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:38,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:38,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954146219] [2024-11-18 15:39:38,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:38,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:38,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:38,280 INFO L87 Difference]: Start difference. First operand 2742 states and 4867 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:39,046 INFO L93 Difference]: Finished difference Result 3927 states and 6620 transitions. [2024-11-18 15:39:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:39,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:39,091 INFO L225 Difference]: With dead ends: 3927 [2024-11-18 15:39:39,092 INFO L226 Difference]: Without dead ends: 3316 [2024-11-18 15:39:39,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:39,107 INFO L432 NwaCegarLoop]: 4201 mSDtfsCounter, 4264 mSDsluCounter, 12568 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4273 SdHoareTripleChecker+Valid, 16769 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:39,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4273 Valid, 16769 Invalid, 516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:39:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2024-11-18 15:39:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 3188. [2024-11-18 15:39:39,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 3010 states have (on average 1.7458471760797343) internal successors, (5255), 3033 states have internal predecessors, (5255), 102 states have call successors, (102), 55 states have call predecessors, (102), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2024-11-18 15:39:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5521 transitions. [2024-11-18 15:39:39,398 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5521 transitions. Word has length 69 [2024-11-18 15:39:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:39,398 INFO L471 AbstractCegarLoop]: Abstraction has 3188 states and 5521 transitions. [2024-11-18 15:39:39,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:39,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5521 transitions. [2024-11-18 15:39:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:39,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:39,405 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] [2024-11-18 15:39:39,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:39:39,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:39,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash 540223602, now seen corresponding path program 1 times [2024-11-18 15:39:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:39,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25725004] [2024-11-18 15:39:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:39,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:39,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25725004] [2024-11-18 15:39:39,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25725004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:39,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:39,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:39:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503272691] [2024-11-18 15:39:39,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:39,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:39:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:39:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:39,630 INFO L87 Difference]: Start difference. First operand 3188 states and 5521 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:40,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:40,485 INFO L93 Difference]: Finished difference Result 5289 states and 8664 transitions. [2024-11-18 15:39:40,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:39:40,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:40,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:40,530 INFO L225 Difference]: With dead ends: 5289 [2024-11-18 15:39:40,530 INFO L226 Difference]: Without dead ends: 4232 [2024-11-18 15:39:40,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:39:40,545 INFO L432 NwaCegarLoop]: 4199 mSDtfsCounter, 4261 mSDsluCounter, 12562 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 16761 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:40,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4274 Valid, 16761 Invalid, 467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:39:40,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2024-11-18 15:39:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 4135. [2024-11-18 15:39:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 3787 states have (on average 1.68127805650911) internal successors, (6367), 3856 states have internal predecessors, (6367), 178 states have call successors, (178), 103 states have call predecessors, (178), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2024-11-18 15:39:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 6977 transitions. [2024-11-18 15:39:40,846 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 6977 transitions. Word has length 69 [2024-11-18 15:39:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:40,846 INFO L471 AbstractCegarLoop]: Abstraction has 4135 states and 6977 transitions. [2024-11-18 15:39:40,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 6977 transitions. [2024-11-18 15:39:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-18 15:39:40,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:40,850 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] [2024-11-18 15:39:40,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:39:40,850 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:40,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1488362508, now seen corresponding path program 1 times [2024-11-18 15:39:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:40,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229697137] [2024-11-18 15:39:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:39:40,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:40,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229697137] [2024-11-18 15:39:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229697137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:39:40,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:39:40,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558057928] [2024-11-18 15:39:40,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:40,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:39:40,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:40,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:39:40,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:39:40,967 INFO L87 Difference]: Start difference. First operand 4135 states and 6977 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:41,137 INFO L93 Difference]: Finished difference Result 7203 states and 11638 transitions. [2024-11-18 15:39:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:39:41,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 69 [2024-11-18 15:39:41,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:41,158 INFO L225 Difference]: With dead ends: 7203 [2024-11-18 15:39:41,159 INFO L226 Difference]: Without dead ends: 5200 [2024-11-18 15:39:41,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:39:41,168 INFO L432 NwaCegarLoop]: 4309 mSDtfsCounter, 4283 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4283 SdHoareTripleChecker+Valid, 8557 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:41,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4283 Valid, 8557 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:39:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2024-11-18 15:39:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5119. [2024-11-18 15:39:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5119 states, 4601 states have (on average 1.6246468159095848) internal successors, (7475), 4699 states have internal predecessors, (7475), 274 states have call successors, (274), 157 states have call predecessors, (274), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2024-11-18 15:39:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 8334 transitions. [2024-11-18 15:39:41,317 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 8334 transitions. Word has length 69 [2024-11-18 15:39:41,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:41,318 INFO L471 AbstractCegarLoop]: Abstraction has 5119 states and 8334 transitions. [2024-11-18 15:39:41,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:39:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 8334 transitions. [2024-11-18 15:39:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:39:41,324 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:41,324 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:41,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:39:41,325 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:41,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:41,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1912897413, now seen corresponding path program 1 times [2024-11-18 15:39:41,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:41,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28055194] [2024-11-18 15:39:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:41,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:39:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28055194] [2024-11-18 15:39:41,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28055194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:41,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935404701] [2024-11-18 15:39:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:41,382 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:41,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:39:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:41,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:41,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 15:39:41,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935404701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:41,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:39:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235720644] [2024-11-18 15:39:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:41,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:41,524 INFO L87 Difference]: Start difference. First operand 5119 states and 8334 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 15:39:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:41,866 INFO L93 Difference]: Finished difference Result 10950 states and 16924 transitions. [2024-11-18 15:39:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:41,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 112 [2024-11-18 15:39:41,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:41,924 INFO L225 Difference]: With dead ends: 10950 [2024-11-18 15:39:41,924 INFO L226 Difference]: Without dead ends: 7963 [2024-11-18 15:39:41,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:41,944 INFO L432 NwaCegarLoop]: 4153 mSDtfsCounter, 4112 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:41,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 4326 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:41,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7963 states. [2024-11-18 15:39:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7963 to 7907. [2024-11-18 15:39:42,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7907 states, 6913 states have (on average 1.5538839866917402) internal successors, (10742), 7106 states have internal predecessors, (10742), 512 states have call successors, (512), 309 states have call predecessors, (512), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2024-11-18 15:39:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 12375 transitions. [2024-11-18 15:39:42,498 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 12375 transitions. Word has length 112 [2024-11-18 15:39:42,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:42,499 INFO L471 AbstractCegarLoop]: Abstraction has 7907 states and 12375 transitions. [2024-11-18 15:39:42,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 15:39:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 12375 transitions. [2024-11-18 15:39:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:39:42,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:42,519 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:42,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 15:39:42,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:42,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:42,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 482611867, now seen corresponding path program 1 times [2024-11-18 15:39:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075587888] [2024-11-18 15:39:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:39:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075587888] [2024-11-18 15:39:42,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075587888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:42,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019644835] [2024-11-18 15:39:42,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:42,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:42,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:39:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:43,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:43,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:39:43,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019644835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:43,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:43,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216403811] [2024-11-18 15:39:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:43,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:43,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:43,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:43,052 INFO L87 Difference]: Start difference. First operand 7907 states and 12375 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 15:39:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:43,892 INFO L93 Difference]: Finished difference Result 19041 states and 28859 transitions. [2024-11-18 15:39:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 112 [2024-11-18 15:39:43,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:44,020 INFO L225 Difference]: With dead ends: 19041 [2024-11-18 15:39:44,025 INFO L226 Difference]: Without dead ends: 13267 [2024-11-18 15:39:44,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:44,076 INFO L432 NwaCegarLoop]: 4315 mSDtfsCounter, 156 mSDsluCounter, 4151 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8466 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:44,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8466 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:44,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13267 states. [2024-11-18 15:39:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13267 to 13267. [2024-11-18 15:39:45,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13267 states, 11336 states have (on average 1.4900317572335922) internal successors, (16891), 11702 states have internal predecessors, (16891), 977 states have call successors, (977), 609 states have call predecessors, (977), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2024-11-18 15:39:45,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13267 states to 13267 states and 20216 transitions. [2024-11-18 15:39:45,441 INFO L78 Accepts]: Start accepts. Automaton has 13267 states and 20216 transitions. Word has length 112 [2024-11-18 15:39:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:45,442 INFO L471 AbstractCegarLoop]: Abstraction has 13267 states and 20216 transitions. [2024-11-18 15:39:45,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-18 15:39:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 13267 states and 20216 transitions. [2024-11-18 15:39:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-18 15:39:45,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:45,480 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:45,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:39:45,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-18 15:39:45,684 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:45,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 918900513, now seen corresponding path program 1 times [2024-11-18 15:39:45,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:45,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071610615] [2024-11-18 15:39:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:45,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-18 15:39:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071610615] [2024-11-18 15:39:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071610615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:45,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010520532] [2024-11-18 15:39:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:45,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:45,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:45,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:45,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:39:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:45,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:45,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:39:46,095 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:46,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010520532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:46,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:46,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:39:46,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486858821] [2024-11-18 15:39:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:46,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:46,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:46,105 INFO L87 Difference]: Start difference. First operand 13267 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 15:39:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:47,204 INFO L93 Difference]: Finished difference Result 35095 states and 52393 transitions. [2024-11-18 15:39:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 145 [2024-11-18 15:39:47,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:47,304 INFO L225 Difference]: With dead ends: 35095 [2024-11-18 15:39:47,304 INFO L226 Difference]: Without dead ends: 23965 [2024-11-18 15:39:47,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:47,338 INFO L432 NwaCegarLoop]: 4173 mSDtfsCounter, 4069 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4069 SdHoareTripleChecker+Valid, 4346 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:47,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4069 Valid, 4346 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23965 states. [2024-11-18 15:39:48,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23965 to 23753. [2024-11-18 15:39:48,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23753 states, 19994 states have (on average 1.447884365309593) internal successors, (28949), 20722 states have internal predecessors, (28949), 1871 states have call successors, (1871), 1199 states have call predecessors, (1871), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2024-11-18 15:39:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23753 states to 23753 states and 35362 transitions. [2024-11-18 15:39:48,502 INFO L78 Accepts]: Start accepts. Automaton has 23753 states and 35362 transitions. Word has length 145 [2024-11-18 15:39:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:48,503 INFO L471 AbstractCegarLoop]: Abstraction has 23753 states and 35362 transitions. [2024-11-18 15:39:48,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-18 15:39:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 23753 states and 35362 transitions. [2024-11-18 15:39:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:39:48,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:48,563 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, 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] [2024-11-18 15:39:48,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 15:39:48,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:48,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:48,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:48,766 INFO L85 PathProgramCache]: Analyzing trace with hash -714352319, now seen corresponding path program 1 times [2024-11-18 15:39:48,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:48,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784796407] [2024-11-18 15:39:48,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:48,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:39:48,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:48,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784796407] [2024-11-18 15:39:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784796407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:48,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490341369] [2024-11-18 15:39:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:48,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:48,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:48,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:48,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 15:39:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:48,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:48,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-18 15:39:49,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490341369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:49,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:49,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:49,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10424358] [2024-11-18 15:39:49,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:49,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:49,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:49,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:49,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:49,061 INFO L87 Difference]: Start difference. First operand 23753 states and 35362 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:39:49,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:49,960 INFO L93 Difference]: Finished difference Result 47805 states and 72824 transitions. [2024-11-18 15:39:49,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:49,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 15:39:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:50,054 INFO L225 Difference]: With dead ends: 47805 [2024-11-18 15:39:50,054 INFO L226 Difference]: Without dead ends: 26187 [2024-11-18 15:39:50,106 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:50,106 INFO L432 NwaCegarLoop]: 4150 mSDtfsCounter, 4087 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:50,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 4184 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26187 states. [2024-11-18 15:39:51,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26187 to 26187. [2024-11-18 15:39:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26187 states, 22216 states have (on average 1.3978664025927259) internal successors, (31055), 22944 states have internal predecessors, (31055), 1925 states have call successors, (1925), 1357 states have call predecessors, (1925), 2044 states have return successors, (4610), 1917 states have call predecessors, (4610), 1923 states have call successors, (4610) [2024-11-18 15:39:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26187 states to 26187 states and 37590 transitions. [2024-11-18 15:39:51,257 INFO L78 Accepts]: Start accepts. Automaton has 26187 states and 37590 transitions. Word has length 163 [2024-11-18 15:39:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:51,258 INFO L471 AbstractCegarLoop]: Abstraction has 26187 states and 37590 transitions. [2024-11-18 15:39:51,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:39:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 26187 states and 37590 transitions. [2024-11-18 15:39:51,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:39:51,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:51,315 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:51,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 15:39:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:51,516 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:51,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash 615881296, now seen corresponding path program 1 times [2024-11-18 15:39:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:51,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122411264] [2024-11-18 15:39:51,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:51,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:39:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122411264] [2024-11-18 15:39:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122411264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144110700] [2024-11-18 15:39:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:51,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:51,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:51,603 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 15:39:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:51,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:51,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-18 15:39:51,766 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144110700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:51,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269047909] [2024-11-18 15:39:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:51,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:51,768 INFO L87 Difference]: Start difference. First operand 26187 states and 37590 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:39:52,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:52,495 INFO L93 Difference]: Finished difference Result 42217 states and 60551 transitions. [2024-11-18 15:39:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:52,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-18 15:39:52,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:52,575 INFO L225 Difference]: With dead ends: 42217 [2024-11-18 15:39:52,576 INFO L226 Difference]: Without dead ends: 22697 [2024-11-18 15:39:52,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:52,615 INFO L432 NwaCegarLoop]: 4149 mSDtfsCounter, 4102 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4102 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:52,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4102 Valid, 4182 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22697 states. [2024-11-18 15:39:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22697 to 17105. [2024-11-18 15:39:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17105 states, 14834 states have (on average 1.385668059862478) internal successors, (20555), 15068 states have internal predecessors, (20555), 1185 states have call successors, (1185), 877 states have call predecessors, (1185), 1084 states have return successors, (1942), 1175 states have call predecessors, (1942), 1183 states have call successors, (1942) [2024-11-18 15:39:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17105 states to 17105 states and 23682 transitions. [2024-11-18 15:39:53,308 INFO L78 Accepts]: Start accepts. Automaton has 17105 states and 23682 transitions. Word has length 163 [2024-11-18 15:39:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:53,308 INFO L471 AbstractCegarLoop]: Abstraction has 17105 states and 23682 transitions. [2024-11-18 15:39:53,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-18 15:39:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 17105 states and 23682 transitions. [2024-11-18 15:39:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-18 15:39:53,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:53,328 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, 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] [2024-11-18 15:39:53,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-18 15:39:53,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-18 15:39:53,532 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:53,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1230369358, now seen corresponding path program 1 times [2024-11-18 15:39:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:53,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654302926] [2024-11-18 15:39:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:39:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654302926] [2024-11-18 15:39:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654302926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:53,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164678334] [2024-11-18 15:39:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:53,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 15:39:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:53,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:39:53,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-18 15:39:53,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:53,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164678334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:53,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:53,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:53,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403906832] [2024-11-18 15:39:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:53,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:53,838 INFO L87 Difference]: Start difference. First operand 17105 states and 23682 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:39:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:54,273 INFO L93 Difference]: Finished difference Result 28464 states and 38556 transitions. [2024-11-18 15:39:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:54,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 163 [2024-11-18 15:39:54,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:54,334 INFO L225 Difference]: With dead ends: 28464 [2024-11-18 15:39:54,335 INFO L226 Difference]: Without dead ends: 18039 [2024-11-18 15:39:54,357 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:54,358 INFO L432 NwaCegarLoop]: 4185 mSDtfsCounter, 4085 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:54,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4362 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18039 states. [2024-11-18 15:39:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18039 to 17929. [2024-11-18 15:39:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17929 states, 15614 states have (on average 1.3634558729345458) internal successors, (21289), 15848 states have internal predecessors, (21289), 1185 states have call successors, (1185), 921 states have call predecessors, (1185), 1128 states have return successors, (1986), 1175 states have call predecessors, (1986), 1183 states have call successors, (1986) [2024-11-18 15:39:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 24460 transitions. [2024-11-18 15:39:55,318 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 24460 transitions. Word has length 163 [2024-11-18 15:39:55,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:55,319 INFO L471 AbstractCegarLoop]: Abstraction has 17929 states and 24460 transitions. [2024-11-18 15:39:55,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:39:55,319 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 24460 transitions. [2024-11-18 15:39:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-18 15:39:55,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:55,342 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:55,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-18 15:39:55,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:55,544 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:55,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash 916086420, now seen corresponding path program 1 times [2024-11-18 15:39:55,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:55,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425827840] [2024-11-18 15:39:55,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:55,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-18 15:39:55,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425827840] [2024-11-18 15:39:55,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425827840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:55,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141484900] [2024-11-18 15:39:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:55,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:55,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:55,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:55,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-18 15:39:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:55,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:55,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-18 15:39:55,752 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:55,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141484900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:55,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:55,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013460997] [2024-11-18 15:39:55,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:55,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:55,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:55,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:55,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:55,755 INFO L87 Difference]: Start difference. First operand 17929 states and 24460 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:39:56,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:39:56,920 INFO L93 Difference]: Finished difference Result 47247 states and 63142 transitions. [2024-11-18 15:39:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:39:56,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2024-11-18 15:39:56,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:39:57,003 INFO L225 Difference]: With dead ends: 47247 [2024-11-18 15:39:57,004 INFO L226 Difference]: Without dead ends: 31457 [2024-11-18 15:39:57,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:57,028 INFO L432 NwaCegarLoop]: 4312 mSDtfsCounter, 151 mSDsluCounter, 4141 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 8453 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:39:57,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 8453 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:39:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31457 states. [2024-11-18 15:39:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31457 to 31453. [2024-11-18 15:39:58,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31453 states, 27068 states have (on average 1.321745234224915) internal successors, (35777), 27534 states have internal predecessors, (35777), 2247 states have call successors, (2247), 1721 states have call predecessors, (2247), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2024-11-18 15:39:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31453 states to 31453 states and 42322 transitions. [2024-11-18 15:39:58,705 INFO L78 Accepts]: Start accepts. Automaton has 31453 states and 42322 transitions. Word has length 164 [2024-11-18 15:39:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:39:58,706 INFO L471 AbstractCegarLoop]: Abstraction has 31453 states and 42322 transitions. [2024-11-18 15:39:58,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:39:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 31453 states and 42322 transitions. [2024-11-18 15:39:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 15:39:58,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:39:58,759 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:39:58,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-18 15:39:58,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:58,963 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:39:58,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:39:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash 122742823, now seen corresponding path program 1 times [2024-11-18 15:39:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:39:58,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471297028] [2024-11-18 15:39:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:39:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-18 15:39:59,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:39:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471297028] [2024-11-18 15:39:59,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471297028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:39:59,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198714087] [2024-11-18 15:39:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:39:59,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:39:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:39:59,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:39:59,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-18 15:39:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:39:59,172 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:39:59,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:39:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 15:39:59,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:39:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198714087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:39:59,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:39:59,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:39:59,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73515524] [2024-11-18 15:39:59,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:39:59,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:39:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:39:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:39:59,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:39:59,196 INFO L87 Difference]: Start difference. First operand 31453 states and 42322 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:40:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:40:01,366 INFO L93 Difference]: Finished difference Result 85811 states and 114718 transitions. [2024-11-18 15:40:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:40:01,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 165 [2024-11-18 15:40:01,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:40:01,555 INFO L225 Difference]: With dead ends: 85811 [2024-11-18 15:40:01,555 INFO L226 Difference]: Without dead ends: 56505 [2024-11-18 15:40:01,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:40:01,615 INFO L432 NwaCegarLoop]: 4318 mSDtfsCounter, 160 mSDsluCounter, 4145 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:40:01,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 8463 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:40:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56505 states. [2024-11-18 15:40:04,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56505 to 56501. [2024-11-18 15:40:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56501 states, 48184 states have (on average 1.2899095135314627) internal successors, (62153), 49114 states have internal predecessors, (62153), 4267 states have call successors, (4267), 3217 states have call predecessors, (4267), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2024-11-18 15:40:04,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56501 states to 56501 states and 75708 transitions. [2024-11-18 15:40:04,369 INFO L78 Accepts]: Start accepts. Automaton has 56501 states and 75708 transitions. Word has length 165 [2024-11-18 15:40:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:40:04,370 INFO L471 AbstractCegarLoop]: Abstraction has 56501 states and 75708 transitions. [2024-11-18 15:40:04,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-18 15:40:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 56501 states and 75708 transitions. [2024-11-18 15:40:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-18 15:40:04,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:40:04,500 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, 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] [2024-11-18 15:40:04,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-18 15:40:04,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-18 15:40:04,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:40:04,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:40:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -458857079, now seen corresponding path program 1 times [2024-11-18 15:40:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:40:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024922139] [2024-11-18 15:40:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:40:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:40:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:40:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-18 15:40:04,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:40:04,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024922139] [2024-11-18 15:40:04,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024922139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:40:04,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745833516] [2024-11-18 15:40:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:40:04,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:40:04,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:40:04,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:40:04,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-18 15:40:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:40:04,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-18 15:40:04,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:40:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-18 15:40:04,899 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:40:04,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745833516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:40:04,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:40:04,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:40:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671508717] [2024-11-18 15:40:04,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:40:04,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:40:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:40:04,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:40:04,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:40:04,901 INFO L87 Difference]: Start difference. First operand 56501 states and 75708 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-18 15:40:07,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:40:07,515 INFO L93 Difference]: Finished difference Result 99085 states and 132162 transitions. [2024-11-18 15:40:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:40:07,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 165 [2024-11-18 15:40:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:40:07,735 INFO L225 Difference]: With dead ends: 99085 [2024-11-18 15:40:07,735 INFO L226 Difference]: Without dead ends: 57897 [2024-11-18 15:40:07,826 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:40:07,827 INFO L432 NwaCegarLoop]: 4175 mSDtfsCounter, 4105 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4105 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:40:07,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4105 Valid, 4350 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:40:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57897 states.